Thursday, December 18, 2003

Parliamentary Questions

18 Dec 2003: Column 1018W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what plans she has for pre-movement testing of cattle for exposure to m.bovis. [144438]

Mr. Bradshaw: All farmers have been sent a leaflet "Golden rules for a healthy herd", which advises purchasers to check the disease status of cattle prior to purchase.

In February 2003, the Secretary of State for Environment, Food and Rural Affairs announced a review of our bovine tuberculosis strategy. Early in the new year we will be publishing a consultation document which will represent the outcome of the first stage of that review. The consultation document will include proposals for short-term measures for reducing the risk of geographic spread of bovine TB from high to low incidence areas, including consideration of proposals for the pre and/or post movement of cattle.

Tuesday, December 16, 2003

Parliamentary Questions

16 Dec 2003: Column 821W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what assessment she has made of whether perturbation in badger populations can be eliminated or substantially reduced by improved badger culling programme design and execution. [141384]

Mr. Bradshaw: No such assessment has been made.

16 Dec 2003: Column 821W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs

(1) what proportion of TB lesions found in cows subject to post-mortem examination for TB were considered to be of a type which would have rendered the cattle in which they were found capable of transmitting bovine TB to another bovine animal in England in the past 10 years; [141089]

(2) where the main TB lesions have been found on those cows which have been subject to post-mortem examinations for TB by or on behalf of her Department, in England in the past 10 years; [141389]

(3) what inferences have been drawn from the sites of TB lesions found on those cows which have been subject to post-mortem examination for TB by or on behalf of her Department, in England, in the past 10 years, as to the routes of transmission. [141392]

Mr. Bradshaw: The vast majority of lesions found in reactors to the TB skin test and in cases disclosed in the slaughterhouse are found in the lymph nodes of the throat and lungs (i.e. retropharyngeal, bronchial and mediastinal nodes).

Any bovine animals infected with the causative agent for bovine tuberculosis (Mycobacterium bovis) becomes potentially infectious for other animals after a period of latency. By the time shedding begins, the animal may or may not have developed visible lesions.

The routes of transmission in field conditions are not fully understood but the distribution of the lesions strongly suggest that the respiratory and oro-pharyngeal routes are the most common.

Reactors to the tuberculin test and confirmed slaughterhouse cases are considered to be infected and infectious. The testing regime applied to the remainder of the herd after removal of the reactors takes account of this.

16 Dec 2003: Column 821W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what the implications are for the UK beef and dairy industries should the UK lose its Organisation International des Epizooties TB-free status. [142000]

Mr. Bradshaw: The United Kingdom does not satisfy the requirements of the OIE or EU to be regarded as TB-free. Article 2.3.3.11. of the OIE Terrestrial Code states that international trade in beef requires the:

"presentation of an international veterinary certificate attesting that the entire consignment of meat comes from animals which have been subjected to ante-mortem and post-mortem inspections for bovine tuberculosis with favourable results".

16 Dec 2003 : Column 822W

Thus, beef can be traded provided the Meat Hygiene Service has passed the meat as fit for human consumption.

In the case of dairy products, the OIE does not provide recommendations for the international trade in milk to protect against TB.

Monday, December 15, 2003

Parliamentary Questions

15 Dec 2003: Column 629W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs whether farmers are able to obtain insurance cover for TB infection in dairy cattle after a TB breakdown and subsequent claim. [141083]

Mr. Bradshaw: It is Government policy to pay compensation at 100 per cent. of the market value, with no upper limit, for cattle that are compulsorily slaughtered under TB control measures. Farmers therefore do not need to take out insurance for their animals. Theoretically, insurance can be bought to cover other consequential losses for which compensation is not

15 Dec 2003 : Column 630W

paid, but this is a commercial matter between the farmers and their insurers. Section 34 (5) of the Animal Health Act 1981 explicitly allows insurers to deduct the amount of Government compensation from the value of any payout that they make.

Insurance companies will make their own decisions on whether to insure, and about the size of premiums, based on their assessment of the risk. Recent contact with insurance industry early in 2003 indicated that, although companies are honouring existing policies, they are not offering new policies to cover TB in cattle herds, particularly in areas where TB is increasingly prevalent. This is because farmers do not wish to take the cover in areas where the risk is low (such as Yorkshire), but do wish to purchase cover in areas of high incidence (such as the South West). However, the insurance companies consider that the financial risks in offering insurance policies in areas of high incidence are too high at present.

15 Dec 2003: Column 630W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what the total cost was of compensation paid to farmers in respect of compulsory purchase of bovine animals slaughtered as a result of TB infection (a) between 1994 and 1998 and (b) since 1998. [142457]

Mr. Bradshaw: The data requested are provided in the tables.

Cost of compensation paid in Great Britain as a result of TB infection between 1994 and 1998 Cost (£)(1)
1994 2,019,911
1995 1,988,820
1996 2,275,481
1997 2,386,029
1998 3,605,242
Total 12,275,483

Source:
(1) The Report of the Chief Veterinary Officer—Animal Health 1998.

Cost of compensation paid in Great Britain as a result of TB infection between 1999 and 2002 Cost (£)(2)
1999 5,770,983
2000 7,307,797
2001 7,074,125
2002 (3)23, 138,512
Total 43,291,417

Sources:
(2) The Report of the Chief Veterinary Officer—Animal Health 2002.
(3) In 2001, the TB testing and control programme was largely suspended due to the foot and mouth disease (FMD) outbreak. Since testing resumed in 2002, resources have been concentrated on herds with overdue TB tests that would have had a longer period in which to contract the disease. Also, the proportion of high risk herds being tested post-FMD is greater than that prior to the outbreak. As a result, the number of TB reactors identified and slaughtered (and hence compensated for) in 2002 is not comparable to those identified and slaughtered in previous years.

15 Dec 2003: Column 631W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what assessment she has made of the effect of shortages of large animal vets for successful control of TB in cattle. [141975]

Mr. Bradshaw: There are no plans to carry out such an assessment. However, the Environment, Food and Rural Affairs Committee issued a report on Vets and Veterinary Services on 23 October 2003 (HC 703), which considers wider concerns about the numbers of large animal practices and the contribution of the veterinary profession to the wider animal health and welfare strategy.

The report contains a number of recommendations and conclusions, and we will be seeking the views of the veterinary profession and other interested parties on the issues raised.

15 Dec 2003: Column 631W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what assessment she has made of whether badgers are capable of accessing mineral and feed troughs positioned at heights in excess of those advised by the Department; and what height that evidence indicates badgers are capable of accessing. [141503]

Mr. Bradshaw: Recent work carried out by the Central Science Laboratory has established that badgers are capable of climbing into feed troughs set at 115cm above ground level, at which height they are inaccessible to cattle.

Thursday, December 11, 2003

Parliamentary Questions

11 Dec 2003: Column 538W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how many people, since 1998, have been arrested for interfering with Government badger traps; and how many have been prosecuted. [141973]

11 Dec 2003 : Column 539W

Mr. Bradshaw: The arrest and prosecution of anti-trial activists is the responsibility of the relevant police forces in whose areas the Randomised Badger Culling Trial areas are located, and the Crown Prosecution Service. Defra does not receive information on, or maintain records of, such arrests and prosecutions.

11 Dec 2003 : Column 539W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what deleterious effects on wildlife arising from the current badger population level have been recorded by her Department and other UK public bodies. [141992]

Mr. Bradshaw: Previous research has shown that there is a negative relationship between badger and hedgehog abundance, i.e. more badgers equals fewer hedgehogs, in rural areas. This is believed to be due to hedgehog predation by badgers and through hedgehogs avoiding areas of higher badger density. However, this is not necessarily a “deleterious effect on wildlife”, since predator/prey interactions are a feature of ecosystems. It has been suggested that badgers may impact adversely on some species of ground nesting birds. The interaction between the badgers and other species in the ecosystem is the subject of a study being carried out by the Central Science Laboratory. This study is being conducted in selected areas of the Randomised Badger Culling Trial and the results will not be available until after the fieldwork programme finishes at the end of 2004.

11 Dec 2003 : Column 539W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what the total cost has been of the reactive cull component of the Government's Randomised Badger Culling Trials. [142459]

Mr. Bradshaw: It is not possible to give an accurate cost of the reactive element of the Randomised Badger Culling Trial. The total cost of the trial to the end of March 2004 is forecast to have reached £30.5 million.

11 Dec 2003: Column 539W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how many badgers have been killed as part of the Randomised Badger Culling Trials; how many were tested for TB infection; and how many were culture positive for TB. [142467]

Mr. Bradshaw: As at 5 December 2003, 8,276 badgers had been culled in the Randomised Badger Culling Trials. All culled badgers are tested for TB infection. On the advice of the Independent Scientific Group on Cattle TB, data on the prevalence of TB in badgers caught in the trial, along with locations of their capture and the incidence of TB in cattle in trial areas, once triplets are active, are not released. This is to protect the integrity of the trial, and for the security of Defra field staff and farmers co-operating in the work.

11 Dec 2003 : Column 539W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what criteria are used to assess whether a reactive badger culling programme is effective. [142472]

Mr. Bradshaw: These are set out in the Second Report of the Independent Scientific Group on Cattle TB. Essentially, over the same time period, the number of cattle herd breakdowns in reactive trial areas are compared to the number of herd breakdowns in the survey only trial areas, taking into account factors such

11 Dec 2003 : Column 540W

as numbers of herds per trial area, timing of tuberculin test and a number of other variables. For analytical purposes, the starting point used for such comparisons, for each triplet, is the end of the initial culling operation in the proactive trial area.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what examples there have been of reactive badger culling programmes in England where the work was successful in controlling TB in cattle; and where and when those programmes were carried out. [141970]

Mr. Bradshaw: Since the early 1970s MAFF/Defra has carried out a range of badger control strategies in an attempt to reduce TB incidence in cattle. These were reviewed in the Krebs Report in 1997 where, among other things, it was recommended that a scientific field experiment be set up to test rigorously the effectiveness (and cost-effectiveness) of different badger culling strategies and to provide the evidence on which to base future TB control strategies. The Krebs report recommended a randomised block approach comprising three treatments: reactive culling, proactive culling, and no culling. The Randomised Badger Culling Trial, as recommended by Krebs and designed by the Independent Scientific Group on Cattle TB, commenced in 1998.

Previous control strategies included Gassing (1975–82), Clean Ring (1982–86), Interim (1986 to 1998) and Live Test (1994–96) further details are available in the Krebs Report Chapter 5 page 76. None of the control strategies have been assessed in a properly designed experiment to establish their efficacy. While removal operations may have had an effect on the prevalence of TB in badgers and on herd breakdowns, other factors may also have influenced these. In the absence of scientific controls, it is not possible to separate out the effects of badger removal from these confounding factors.

11 Dec 2003: Column 540W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what estimate she has made of the incidence of TB in (a) badgers and (b) cattle in England during (i) 2004 and (ii) 2005. [142469]

11 Dec 2003: Column 541W

Mr. Bradshaw: It is only possible to make estimates of the incidence of bovine TB in cattle based on previous years. Unfortunately, data for both 2002 and 2001 cannot be easily compared to earlier years. This is because, in 2001, TB testing was largely suspended during the foot and mouth disease outbreak, and in 2002 much of the testing effort was aimed at high-risk herds and those with overdue tests. Nevertheless, early indications suggest that the reduced levels of testing in 2001 have not substantially altered the underlying historical trend of confirmed TB incidents in cattle, which continues to rise at a yearly average rate of about 18 per cent. for new herd incidents.

No estimates have been made regarding the incidence of TB in badgers.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what assessment she has made of the impact of the level of funding to laboratories for the examination of bovine samples for M. bovis on the time scale for the testing of samples. [142338]

Mr. Bradshaw: Culture of samples for Mycobacterium bovis (the causative organism for bovine tuberculosis) takes at least six weeks. A backlog of samples built up at the Veterinary Laboratories Agency (VLA) after the foot and mouth disease outbreak in 2001.

An extra £650,000 funding was made available in 2003–04 to the Veterinary Laboratories Agency (VLA) to tackle the backlog. So far in 2003, the monthly throughput at VLA of bovine samples for culture has been more than three times higher than in 2002. Fresh samples are now being processed as they arrive at VLA and we are further reducing the backlog of frozen samples.

At the end of October 2003 there were 1,781 tissue samples awaiting culture at the VLA (down from 6,329 at the end of March 2003). Nearly all of the outstanding samples (1,712) are from carcases that showed no visible lesions at post-mortem, and thus not causing a delay in lifting movement restrictions from farms.

Wednesday, December 10, 2003

Parliamentary Questions

10 Dec 2003: Column 522W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what plans the Department has to evaluate the impact on efficacy of culling of the use of anaesthesia in badger setts prior to lethal gassing. [141081]

Mr. Bradshaw: The Department has no plans to evaluate the impact on efficacy of culling of the use of anaesthesia in badger setts prior to lethal gassing. The gassing of badgers has been discounted as a culling option because it is considered to be inhumane.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs for how long Mycobacterium bovis bacilli can survive in badger setts. [141394]

Mr. Bradshaw: It is not known precisely how long M. bovis (the causative organism of bovine tuberculosis) may survive in badger setts. The organism is killed by exposure to ultra violet light and extremes of temperature and humidity, as well as the growth of other bacteria and fungi. The lack of light and relatively constant temperature and humidity conditions found inside a badger sett would favour the survival of M. bovis.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what predictions were made, in explanatory material made available to farmers by her Department as to the percentage of badgers which were to be killed by culling teams engaged in the Krebs trials. [141993]

Mr. Bradshaw: In their first report, the Independent Scientific Group on Cattle TB, reported that informal estimates suggested a capture rate of up to 80 per cent. could be expected using cage traps alone. Information made available to farmers by leaflet, refers to “Proactive culling as many badgers as possible from a whole area (about 80 per cent.)” based, in part, on post-culling assessments of trapping efficiency. These assessments were based on field signs and are therefore largely

10 Dec 2003: Column 523W

subjective. They are, however, carried out by experienced personnel and give a useful indication of the extent of badger population reduction in proactively culled areas.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what information she has collated on whether significant damage is caused by badgers to ground nesting birds. [142460]

Mr. Bradshaw: Badgers are known to predate on ground nesting birds, although such predation is likely to be largely opportunistic. The impact of badger predation on bird populations has not been specifically quantified, but is not thought to significantly affect populations nationally. Locally, however, the situation may be different.

Bird remains are typically found in about 7.5 per cent. of badger dung in the U.K., and diet studies confirm that badgers eat eggs, nestlings and adult birds. These studies are unable to distinguish between scavenged and killed birds, and do not quantify the importance of birds in the badger diet.

Defra is currently funding research aimed at providing a scientifically vigorous assessment of the importance of badger predation for ground nesting birds. The project involves a review of current knowledge and intensive field investigations to assess to extent of predation by badgers. The project, which is being undertaken by the Central Science Laboratory, will report its findings in March 2005.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what the welfare implications are for badgers infected with TB; at what stage in the disease they suffer; and how long that suffering can last. [142461]

Mr. Bradshaw: In a study by the Central Science Laboratory and Veterinary Laboratories Agency, TB as a cause of death accounted for less than 7 per cent. of badgers found dead. It is difficult to make objective assessment of whether these animals suffer. Typically, individuals may live for many months or even years while infected, showing no overt signs of clinical illness and maintaining normal body weights. Infected female badgers often give birth and successfully rear litters. However, post mortem findings where advanced pathological changes have occurred, particularly in the lungs, indicate that during the final stages of disease there would undoubtedly be an effect on the quality of life of such an animal. This stage is thought to last for a few weeks at most.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how many times in each of the reactive areas of the randomised badger culling trials badger clearances were carried out. [142463]

Mr. Bradshaw: For each of the 10 reactive treatment areas the number of individual clearance operations is detailed in the following table.

Reactive trial area Number of reactive operations completed(12)
A1 10
B1 10
C1 20
D1 4
E1 (13)10
F3 10
G1 7
H1 4
11 3
J2 0

(12) Individual reactive operations vary in the extent of the geographical area involved and the number of herd notifications for reactive culling included
(13) Includes an operation halfway through the culling period at the time of suspension of reactive culling on 4 November 2003.

10 Dec 2003 : Column 524W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs if she will make a statement on (a) the adequacy of the resources allocated to the reactive cull component of the Government's randomised badger culling trials and (b) the adequacy of the number of personnel allocated, with particular reference to clerical personnel with sufficient skills, training and experience. [142464]

Mr. Bradshaw: The information requested is as follows.

(a) It has at times been difficult for MAFF/Defra to carry out reactive culling in response to a herd breakdown as quickly as the Independent Scientific Group on Cattle TB (ISG) anticipated its First Report. Resource limitations, including difficulties inherent in the recruitment and retention of appropriately skilled staff, have played a part. Difficulties became apparent in 2002 when, in effect, the impact of the suspension of TB testing in 2001 due to foot and mouth disease meant that two years’ worth of breakdown notifications required reactive culling, alongside the servicing of culling in the proactive areas. Defra has worked hard since FMD to meet the ISG's expectations both in terms of the time between breakdown and culling, and the number of operations completed. The ISG has helped by making some pragmatic decisions by assisting with priorities and by setting realistic, yet challenging, targets which Defra has either met or exceeded.

(b) It is considered that the level of clerical or administrative support has been adequate and not had any a diverse impact on the fieldwork for the Randomised Badger Culling Trial.

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how long a reactive culling area must be maintained for statistically valid data to be obtained from the trial in that area. [142465]

Mr. Bradshaw: As set out in the Second Report of the Independent Scientific Group on Cattle TB (ISG), the design of the trial is based on accumulating a maximum of 50 triplet years of data to provide a probability exceeding 90 per cent. of detecting a 20 per cent. effect. The ISG committed itself at the outset, to carry out an initial analysis of the data once 100 new breakdowns had been accumulated in trial areas, and to repeat the analysis at six-month intervals.

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how many reactive culling areas were designated during the randomised badger culling trials; and what the dates were on which the trials commenced in each area. [142466]

10 Dec 2003 : Column 525W

Mr. Bradshaw: Within each of the 10 reactive treatment areas the number of individual culling areas varies from 0 to 20. I attach a table that presents the requested data clearly.

Reactive Trial Area Number of reactive operations completed(14) Date of Field Operations(15)
A1 10 3 July 2000
B1 10 24 May 1999
C1 20 15 May 2000
D1 4 25 August 2003
E1 (16)10 17 June 2002
F3 10 29 July 2002
G1 7 19 August 2002
H1 4 15 January 2003
11 3 16 May 2003
J2 0 -

(14) Individual reactive operations vary in the extent of the geographical area involved and the number of herd notifications for reactive culling included
(15) Date that traps are first set to catch badgers
(16) Includes an operation halfway through the culling period at the time of suspension of reactive culling on 4 November 2003

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what concerns Professor Bourne has raised with her on the effect of delays in obtaining culture test results for bovine samples on management of the randomised badger culling trials. [142337]

Mr. Bradshaw: Professor Bourne wrote to the then Parliamentary Secretary (Commons), Mr. Morley, on 9 May 2003 enclosing a number of reports including one reviewing the implementation of the reactive strategy in the randomised badger culling trial. This pointed out that clearance of the TB testing backlog, caused by the suspension of testing during the 2001 foot and mouth disease outbreak, had overwhelmed culture facilities and contributed to delays in the notification of TB herd breakdowns that triggered reactive culling operations. The paper brought the concerns of the Independent Scientific Group on Cattle TB to the Minister's attention but concentrated on advising the Department on what it could do to improve notification and reactive response times.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what the projected expenditure is by her Department for the next five years on developing vaccines for protecting (a) bovine animals and (b) badgers against TB infection. [141967]

Mr. Bradshaw: The content and funding for the future TB research programme is currently under discussion within the Department and is taking account of external scientific advice. TB vaccine development is likely to form an increasingly important part of the research programme.

10 Dec 2003: Column 525W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what the total expenditure since 1973 by her Department and its predecessors has been on developing vaccines for protecting (a) bovine animals and (b) badgers against TB infection. [141977]

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Mr. Bradshaw: Work on vaccinating badgers against TB was carried out by MAFF from 1983 to 1990, but the figures for expenditure at that time are not available.

Much of the development work involves developing candidate vaccines. This work applies equally to vaccines for cattle and badgers so the figures do not differentiate between the two species.

The major effort on TB vaccine research, in relation to cattle and badgers, started in 1998, subsequent to the Krebs Report on Bovine Tuberculosis in Cattle and Badgers. The following table shows vaccine related research costs for the financial years 1998–99 to date.

£
Financial Year Vaccine related research cost
1998–99 825,942
1999–2000 1,352,204
2000–01 1,415,287
2001–02 1,505,887
2002–03 1,495,314
2003–04 1,618,819


10 Dec 2003: Column 526W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how many bovine animals were compulsorily purchased and slaughtered as a result of TB infection between 1994 and 1998. [142456]

Mr. Bradshaw: The number of cattle slaughtered in Great Britain as a result of TB infection between 1994 and 1998 is set out in the following table:

Cattle slaughtered(17)
1994 2,773
1995 3,451
1996 3,881
1997 3,760
1998 6,083
Total 19,948

(17) TB Reactors plus dangerous contacts. Veterinary Officer—Animal Health 1998
Source: The Report of the Chief Veterinary Officer

10 Dec 2003: Column 526W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how many bovine animals have been compulsorily purchased and slaughtered as a result of TB infection since 1998. [142458]

10 Dec 2003 : Column 527W

Mr. Bradshaw: The number of cattle slaughtered in Great Britain as a result of TB infection between 1999 and 2002 is set out in the following table:

Cattle slaughtered(18)
1999 6,772
2000 8,353
2001 5,916
2002 (19)22,886
Total 43,927

(18) TB Reactors plus dangerous contacts. Source: The Report of the Chief Veterinary Officer—Animal Health 2002
(19) In 2001, the TB testing and control programme was largely suspended due to the foot and mouth disease (FMD) outbreak. Since testing resumed in 2002, resources have been concentrated on herds with overdue TB tests which would have had a longer period in which to contract the disease. Also the proportion of high risk herds being tested post-FMD is greater than that prior to the outbreak. As a result, the number of TB reactors identified and slaughtered in 2002 is not comparable to those identified and slaughtered in previous years.

Monday, December 08, 2003

Parliamentary Questions

8 Dec 2003: Column 210W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs whether badgers infected with tuberculosis are capable of depositing infectious tubercular material sufficient to cause infection in cattle on open pasture and other areas to which cattle have access. [141078]

Mr. Bradshaw: Although it is likely that badgers infected with tuberculosis are capable of infecting cattle, the routes of transmission of Mycobacterium bovis (the causative agent for bovine tuberculosis) from cattle to cattle, and between badgers and cattle, are not fully understood.

The Randomised Badger Culling Trial is designed to provide information on the role of badgers in cattle TB. Other research investigates the pathogenesis of M. bovis in cattle. These form part of a broad programme or research designed to deliver information on improved diagnostics, how TB is transmitted, how TB develops in affected animals, and on the interaction with wildlife.

8 Dec 2003: Column 210W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what badger latrines are; and what relevance they have in the spread of M.bovis to cattle. [141079]

Mr. Bradshaw: Badger latrines are areas where the animals habitually defecate. Typically, they comprise several small pits 10 to 20 cm diameter containing badger droppings, usually contained within an area up to five metres across. Latrines are found within and on the periphery of badger social group territories. Badgers also urinate around latrines and smear their scent on the ground. Badgers infected with M. bovis (the causative organism of bovine tuberculosis) may excrete the organism in their faeces and/or urine. Therefore if badger latrines occur on pasture, or in areas frequented by cattle they may pose a risk of M. bovis infection for cattle.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how adult badgers infected with M. bovis transmit the infection to their young. [141080]

Mr. Bradshaw: It is possible that a sow badger infected with M. bovis (the causative organism of bovine tuberculosis) may transmit infection to her cubs through contaminated milk, or by aerosol in the confines of an underground nest chamber. Badgers may also infect each other by bite wounding, either during play fighting or through more aggressive territorial and mating encounters.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what the estimated incidence of TB in (a) badgers and (b) cattle in England was in the last year for which figures are available. [141082]

Mr. Bradshaw: The last year for which data is available on TB in badgers in England is the period 6 October 1998 to 5 October 1999. Table 1 shows the number of badger carcasses tested and found positive for Mycobacterium bovis (the causative organism for bovine tuberculosis) in this period, while Table 2 shows the incidence of TB in cattle for the same period.

Table 1: Badgers tested for M. bovis in England: 6 October 1998 to 5 October 1999(4) Number and percentage
Number of badger carcasses tested 1,038
Number of badger carcasses M. bovis positive 104
Percentage(5) 10

(4) Data from the Randomised Badger Culling Trial (RBCT) and the associated current Road Traffic Accident (RTA) survey is not available. Data is sourced from the previous RTA survey and sources other than from Badger removal operations, and pre-dates the current RTA survey and RBCT.
(5) It is not possible to provide incidence rates for TB in badgers in the absence of data about the date badgers became infected.

Table 2: TB herd incidence in England: 6 October 1998
to 5 October 1999(6) Incidence of TB in cattle
Tests on unrestricted herds 28,353
Confirmed new incidents 702
Incidence(7) 2.5

(6) Data downloaded from the State Veterinary Service database on 1 December 2003.
(7) Percentage.

8 Dec 2003: Column 211W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what conclusions have been drawn on routes of transmission from post-mortem examination of badgers for TB in the past 10 years. [141084]

Mr. Bradshaw: Post-mortem examination of badgers is used as part of the process of determining if badgers are infected with Mycobacterium bovis, the causative agent of bovine tuberculosis. Post-mortem findings do not provide a basis for ascribing the source or route of infection. However, the location of visible lesions may be indicative of the route of infection e.g. lesions in the lung tissue would suggest a respiratory route of infection. The distribution of lesions in badgers examined by Defra from 1990–99 indicates that infection may have occurred through the respiratory or oral routes, as well as through infection from bite wounds.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what estimate has been made of the optimum badger population in England; and what assessment has been made of the effect on the local environment of colonies extending beyond the optimum size. [141085]

Mr. Bradshaw: No estimate has been made of the optimum badger population in England, and therefore no estimate can be made of the effect on the local environment of colonies extending beyond the optimum size.

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Defra is funding a project designed to assess the impact of removing badgers from the ecosystem. The results will shed more light on the ecological interaction of badgers with other species, which share their environment.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what assessment she has made of the percentage of badgers which can reasonably be expected to be killed in a defined area when the culling teams rely solely on trapping. [141088]

Mr. Bradshaw: In the absence of any means to estimate badger populations accurately, either prior to or post culling, it is always going to be difficult to make such assessments. In the randomised badger culling trial, post-culling surveys have indicated that, in the best conditions and allowing for a proportion of trap-shy animals, about 80 per cent. of the population may be culled using cage traps. In less than optimal conditions this figure can be substantially lower.

8 Dec 2003: Column 212W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs where the main TB lesions have been found on those badgers which have been subject to a post-mortem examination for TB by or on behalf of her Department, in England in the past 10 years. [141393]

Mr. Bradshaw: Information is available for the period 1 January 1990 to 31 December 1999. For this period of the 3,682 badgers that were positive for bovine TB, 1,228 displayed gross TB lesions.

The following table classifies the occurrence of the lesion locations.

Location of lesion Occurrence
Abdominal nodes 64
Head nodes 330
Chest nodes 532
Skeletal nodes 223
Chest cavity tissues apart from lymph nodes 418
Abdominal cavity tissues apart from lymph nodes 191

8 Dec 2003: Column 212W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what action is taken by the Department when its badger traps are found to be removed or otherwise interfered with. [141972]

Mr. Bradshaw: When badger traps are found to be removed or otherwise interfered with, traps are replaced or resited or, alternatively, more discrete trapping sites are selected. Incidents of trapping interference are reported to the police.

8 Dec 2003: Column 213W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how many field staff, as full-time equivalents, are employed by her Department both directly and on contract, on randomised badger culling trials; and how many were employed in (a) 2002 and (b) 2001. [141974]

Mr. Bradshaw: The average number of field staff employed on the Randomised Badger Culling Trial in the Veterinary Directorate Wildlife Unit by financial year is as follows.

8 Dec 2003: Column 213W

Number
1998–99 62
1999–2000 90
2000–01 110
2001–02 136
2002–03 127
2003–04 133

For most of 2001, field staff were reassigned to dealing with FMD. Over the first three years of the Trial contracts to carry out initial Triplet surveying were negotiated with CSL and ADAS and additionally small numbers of staff were deployed from elsewhere in the Department to support major proactive cull operations. Badger culling, however, was always carried out by Wildlife Unit personnel.

8 Dec 2003: Column 214W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what advice the Department has given to farmers on the prevention of TB in cattle, in respect of the height of mineral and feed troughs to avoid badgers gaining access to them. [141086]

Mr. Bradshaw: The Department has provided guidance to farmers on how to reduce the risk of cattle being exposed to Mycobacterium bovis in a free booklet entitled “TB in Cattle—Reducing Risk”.

8 Dec 2003: Column 215W

Steps include ensuring mineral blocks and lips of water troughs are raised at least 80 cm (30 inches) off the ground, fencing off badger latrines and setts, not feeding cattle in troughs at pasture and avoiding the use of grass from badger latrines and field margins when cutting silage.

8 Dec 2003: Column 215W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what European Union funds are available to farmers on whose cattle TB restrictions are imposed; how much is payable per head of cattle; whether match funding is required; and what claims the Department has made. [141087]

Mr. Bradshaw: We are not aware of any EU funds payable to farmers under TB restrictions. The Government currently pays farmers 100 per cent. of market value for cattle removed under TB control measures.

8 Dec 2003: Column 215W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs whether her Department has analysed the (a) number and (b) proportion of farms where cattle with an autumn TB breakdown (i) have subsequently gone clear and (ii) have an increasing incidence of TB through the winter; and whether the first group of cases occurs in areas with a high level of TB infection in badgers. [141380]

Mr. Bradshaw: This information cannot be provided, except at disproportionate cost. There are seasonal trends in the detection of incidents of bovine TB but it is impossible to determine from currently available information whether these trends reflect seasonally in exposure to the disease.

The Randomised Badger Culling Trial, alongside the Road Traffic Accident survey and the TB99 epidemiological questionnaire, is providing data about the prevalence of TB in badgers in areas of high incidence in cattle herds, for analysis by the Independent Scientific Group on Cattle TB.

8 Dec 2003: Column 215W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what level of TB infection in cattle in the national herd her Department has assessed as being acceptable. [141382]

Mr. Bradshaw: A possible long-term objective in terms of control of bovine TB could be to achieve Officially Tuberculosis Free status as defined by the EU and the OIE. In the short term, Defra is seeking to arrest the geographic spread of the disease, and is shortly to consult on proposals designed to do this. Defra is also soon to consult on a new TB Strategy, looking at the roles of industry and Government, as well as considering what might be achievable in terms of TB control over next 10 years.

8 Dec 2003: Column 215W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what proportion of cattle reported to be infected with TB are believed to have acquired infection from cattle-to-cattle transmission; and what proportion are believed to have acquired their infection (a) directly and (b) indirectly from badgers. [141383]

Mr. Bradshaw: It is not possible to ascribe the source of TB infection in cattle, as the routes of transmission of Mycobacterium bovis (the causative agent for bovine tuberculosis) from cattle to cattle, and between badgers and cattle, are not fully understood.

8 Dec 2003: Column 216W

The Randomised Badger Culling Trial was designed to provide information on the role of badgers in cattle TB (as well assessing the effectiveness of two badger culling options as control measures). Other research includes investigation of the pathogenesis of M. bovis in cattle. This forms part of a broad programme designed to deliver information on improved diagnostics, how TB is transmitted, how TB develops in affected animals, and on the interaction with wildlife.

In addition, a survey is underway to assess potential risk factors that may predispose herds to TB outbreaks. A preliminary analysis is set out in the Third Report of the Independent Scientific Group on Cattle TB.

8 Dec 2003: Column 216W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what assessment she has made of the use of polymerase chain reaction testing instead of culture testing for the confirmation of TB in bovine samples. [141385]

Mr. Bradshaw: The Veterinary Laboratories Agency is collaborating with the Imperial College in the design and optimisation of a Mycobacterium bovis-specific polymerase chain reaction (or PCR) assay for the detection of M. bovis DMA in bovine TB lesions. Any new laboratory test is likely to complement rather than replace existing culture techniques.

8 Dec 2003: Column 216W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs for what reason hauliers are prohibited under certain circumstances from collecting full loads of TB reactors, comprising animals from different farms, for delivery to slaughterhouses. [141386]

Mr. Bradshaw: Any animal movement constitutes a health risk. Under post-FMD movement controls, Defra allowed a round of collections of animals from different farms only if all of the farms involved each had multiple pickup approval.

There are farms which do not want approval or which cannot meet approval requirements. Where farms do not want approval or cannot meet approval requirements, the haulier must transport TB reactor animals direct to the slaughterhouse.

8 Dec 2003: Column 216W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what the differences are between TB control programmes in (a) the UK and (b) Ireland. [141387]

Mr. Bradshaw: The UK broadly adopts the TB control measures set out by EU Directive 64/432/EEC on animal health problems affecting intra-Community trade in bovine animals and swine. It is understood that the arrangements in the Republic of Ireland are similar.

The Republic of Ireland has a policy for limited culling of badgers for disease control purposes, whereas the UK does not.

8 Dec 2003: Column 216W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what plans she has to compensate farmers who suffer consequential losses as a result of TB infection in their herds following the failure of the reactive component of the randomised badger culling trials. [141388]

8 Dec 2003 : Column 217W

Mr. Bradshaw: We have no plans to compensate farmers who suffer consequential losses as a result of TB infection in their herds following the suspension of badger culling in reactive areas of the randomised badger culling trial. The payment of consequential loss to producers falls within the definition of State Aids and cannot therefore be paid without the agreement of the EU Commission.

There has always been an element of risk in participation in the trial, although the majority of farmers might have presumed that culling badgers would only help reduce the risk of TB in their herds. Nevertheless all farmers took part in the trial on a voluntary basis, having had the choice to opt out totally, agree to survey operations only, or to surveying and culling operations, and to change their level of involvement at any time.

8 Dec 2003: Column 217W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs whether she will prohibit the sale of milk for any purpose from farms under TB restriction. [141390]

Mr. Bradshaw: Pasteurisation is effective in eliminating the risk from Mycobacterium bovis (the causative organism for bovine TB) in milk. Milk from herds under TB restrictions is permitted to be sold for human consumption after it has been heat treated. Milk hygiene legislation requires that raw milk and raw milk products for direct human consumption are produced from milk from officially TB free herds.

8 Dec 2003: Column 217W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what precautions farmers are advised to take to avoid exposing their cattle to M. bovis infection. [141391]

Mr. Bradshaw: The Department has provided a significant amount of advice and codes on the health and welfare of livestock. The Defra leaflet, “TB in Cattle - Reducing the Risk” suggests that farmers consider moving to a closed herd system. However, such a system still needs to be combined with other disease prevention measures to reduce risks of disease introduction and spread. Defra has also produced a leaflet “Golden rules for a healthy herd” that gives specific advice on preventative strategies for avoiding introduction of the most important cattle diseases, including TB during restocking.

Defra has also produced a concise list of disease prevention measures, including the need to always know the health status of animals being bought or moved, in the form of a yellow card which was developed with livestock industry representatives and vets. It was sent to all livestock farmers in 2002, and is available on the Defra website.

8 Dec 2003: Column 217W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs whether M. bovis isolates can be characterised to determine its genetic relationship to other isolates by using the technique of DNA fingerprinting; and whether there has been such fingerprinting of TB isolates from cattle and badgers in order to identify epidemiological relationships. [141396]

Mr. Bradshaw: Spoligotyping is used to determine molecular type for all isolates of the bovine tuberculosis bacillus (M. bovis) obtained from badgers and cattle. Variable Number Tandem Repeats (or VNTR), a

8 Dec 2003: Column 218W

technique able to subdivide some spoligotypes, is also used. Generally the different strain types of M. bovis that these techniques identify exhibit distinct and probably longstanding geographical clustering. Within each geographical cluster the same strains tend to be found in badgers and cattle. Even where the same strain has been found in two different species in the same locality, it is difficult to deduce the direction of interspecies transmission, how often it occurs, and how much transmission there is between animals of the same species.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how long the current TB skin test on cattle as a preliminary diagnostic aid has been in use. [141968]

Mr. Bradshaw: The tuberculin skin test for cattle has been compulsory in Great Britain since 1950. This is the test prescribed by the OIE for international trade, as well as under EU Directive 64/432/EEC on animal health problems affecting intra-Community trade in bovine animals and swine.

8 Dec 2003: Column 218W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what plans she has to replace the TB skin test used on cattle as a preliminary diagnostic aid with a more accurate and sensitive test. [141969]

Mr. Bradshaw: Improved diagnosis of TB in cattle is a major objective of Defra's wide-ranging research programme. The current most promising candidate is the gamma interferon test, a laboratory-based blood test that measures the immune response to M. bovis (the causative agent for bovine TB) of T-cells in cattle blood.

This test was officially recognised by the EU in July 2002, but only for use as a supplement to the Single Intradermal Comparative Cervical Test (SICCT) in TB affected herds. The test is considered more sensitive than the SICCT, but less specific, meaning that it results in a higher probability of false positives. For this reason, the gamma interferon test cannot be used on its own as a screening test for TB for the time being.

In October 2002, Ministers announced the field evaluation of the gamma interferon test, to assess the potential for its use in GB.

8 Dec 2003: Column 218W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs in how many cases badger traps laid by or on behalf of the Department in TB culling trials have been interfered with or removed without authorisation. [141971]

Mr. Bradshaw: Interference with badger traps laid in the Randomised Badger Culling Trial is variable between operations. It is usually quite geographically localised and repetitive within a culling operational area. Management records indicate that—over 116 culling operations, across 19 trial areas, between December 1998 and 10 October 2003, during which 15,666 traps were sited—there were 8,981 individual occasions where a trap was interfered with, and 1,827 individual occasions when a trap was removed.

8 Dec 2003: Column 218W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what the current status is of research on vaccines suitable for application

8 Dec 2003: Column 219W

to (a) badgers and (b) bovine animals to protect against TB infection; and when she expects commercial vaccines will become available. [141976]

Mr. Bradshaw: Defra's extensive bovine TB vaccine research programme is aimed at identifying the most effective vaccine candidates and the most appropriate vaccination programmes to reduce the incidence of bovine TB. Depending on the outcome of this research, it will be necessary to gain approval for the selected vaccine or vaccines to be used in cattle or badgers or other susceptible species.

The current situation is that the progress on research on vaccines is broadly in line with the timeline set out in the Krebs report, published in 1997. This estimated:

Years 1–5: Identification of candidate vaccines and development of differential diagnostic tests;

Years 5–10: Experimental investigations of vaccination protocols;

Years 10–15: Field trials.

The current status of research on vaccines was studied by the Independent Scientific Group's Vaccine Scoping Study Sub-Committee who submitted their report to Ministers in July. Ministers, last week, recommended publication of the report and this will be available shortly, both in written form and on the Defra website.

It is not possible at this stage to estimate when commercial vaccines will become available, but discussions with industry are ongoing.

8 Dec 2003: Column 219W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what representations have been made by her Department to insurance providers and underwriters on the funding of a joint venture to top up compensation paid for TB reactor cattle above the proposed cut to average market value. [141999]

Mr. Bradshaw: In developing proposals for a fundamental overhaul of our animal disease compensation arrangements, Defra met with representatives of insurance companies earlier in the year to explore a number of different options. It was concluded that "top-up" insurance schemes for loss of high value animals to notifiable animals diseases is not currently a viable option, as the market is not sufficiently developed. Top-up insurance is not set out as a short-term option for compensation for high-value animals in the current consultation on proposals to rationalise compensation for notifiable animal disease control. Under our proposals animals worth significantly more than the average market value can be pre-valued and registered with Defra. In such cases the compensation payable will be equivalent to the registered pre-valuation.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what plans she has to fund average cull-price for TB-infected animals and reactors with an industry levy on (a) milk and (b) beef. [142001]

Mr. Bradshaw: The Government is working on proposals for an animal disease levy, which might include TB. The funds raised would be used to pay for, among other things, the costs of compensation for animals which are compulsorily slaughtered. At the moment the option we favour is a levy on live animals

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rather than animal products, but no decisions have been taken. We intend to consult on our proposals in the first half of next year.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how maintenance of closed dairy herds protects cattle from TB infection. [142003]

Mr. Bradshaw: Maintaining a closed herd can eliminate the risk of introducing cattle infected with bovine tuberculosis. The risk of spread of infection from nearby herds and wildlife can be reduced by adopting husbandry and biosecurity measures, as described in the freely available Defra booklet "TB in Cattle - Reducing the Risk".

Thursday, November 20, 2003

Parliamentary Questions

20 Nov 2003: Column 1200W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs, what action has been taken to prevent recolonisation of badger setts after clearance of TB-infected badgers in Krebs reactive areas. [140297]

Mr. Bradshaw: All trapped setts are subject to the same procedures, irrespective of the TB status of the badgers taken from them, and no action is taken to prevent re-colonisation of any setts in reactive areas.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs, what procedures are carried out in respect of badger setts from which TB-infected badgers have been removed. [140298]

Mr. Bradshaw: All procedures are standardised and do not vary between setts from which TB infected badgers and non-infected badgers are taken.

Within the Randomised Badger Culling Trial, no specific action is taken against setts from which badgers have been removed. Following the removal of traps, at the conclusion of trapping operations, techniques such as sticking holes (placing sticks across them) may, occasionally, be used to assist subsequent surveys assess post-cull badger activity.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what radius was adopted to describe the area designated for badger culls in (a) the Krebs proactive and reactive culling protocols and (b) culling protocols adopted prior to 1988. [140310]

Mr. Bradshaw: The Krebs proactive and reactive culling areas were chosen from localities in Cornwall, Derbyshire, Devon, Gloucestshire, Herefordshire, Staffordshire and Wiltshire with the highest incidence of TB in cattle; each of the ten proactive and ten reactive areas measures approximately 10,000 hectares (100 sq km). Whilst culling is carried out across an entire proactive area, in reactive areas culling takes place only on and around farms which have had a TB breakdown.

The culling protocols adopted prior to 1986 were the Gassing Strategy (1975–1982) and the Clean Ring Strategy (1982–5). In the Gassing Strategy the area of badger removal extended up to 1 km from farms with confirmed TB breakdowns. The mean area of badger removal in Clean Ring Strategy areas was about 9 sq. km.

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Mr. Bradshaw: The Krebs proactive and reactive culling areas were chosen from localities in Cornwall, Derbyshire, Devon, Gloucestshire, Herefordshire, Staffordshire and Wiltshire with the highest incidence of TB in cattle; each of the ten proactive and ten reactive areas measures approximately 10,000 hectares (100 sq km). Whilst culling is carried out across an entire proactive area, in reactive areas culling takes place only on and around farms which have had a TB breakdown.

The culling protocols adopted prior to 1986 were the Gassing Strategy (1975–1982) and the Clean Ring Strategy (1982–5). In the Gassing Strategy the area of badger removal extended up to 1 km from farms with confirmed TB breakdowns. The mean area of badger removal in Clean Ring Strategy areas was about 9 sq. km.

20 Nov 2003: Column 1200W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what research the Department has commissioned on the use of anaesthesia in badger setts prior to lethal gassing. [140312]

Mr. Bradshaw: No research has been commissioned in this area. Gassing of badgers has been discounted as a culling option because it is considered to be inhumane.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how many badgers have been subject to post-mortem examination

20 Nov 2003: Column 1201W

for TB in England in the past 10 years; how many were TB reactors; and what proportion of TB lesions found were considered to be of a type which would render badgers capable of transmitting bovine TB. [140313]

Mr. Bradshaw: Excluding badgers taken in the Randomised Badger Culling Trial (RBCT) or in the seven counties road trafic accident survey, 14,387 badger carcases have been examined of which 2,995 (20.5 per cent.) were considered to be positive. The Independent Scientific Group on Cattle TB (ISO) recommended that, pending completion of the RBCT, interim reports on numbers and locations of badgers culled and TB prevalences should not be published in order to avoid encouraging illegal action against badgers, deterring participation in the trial and to protect the trial's statistical validity.

Of the badgers considered to be infected, only those with lesions detected in the lungs, pleura, kidneys and intestines are considered to be likely to be shedding M. bovis and so infectious. 447 (15.1 per cent. had lesions in these tissues.

20 Nov 2003: Column 1202W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs from which organisations the Department takes advice on the control of TB in cattle. [140291]

Mr. Bradshaw: The Independent Scientific Group on Cattle TB (ISG) is a group of independent scientists who advise the Secretary of State for Environment, Food and Rural Affairs on how best to tackle the problem of cattle TB. The ISG was set up following the acceptance by Ministers of the recommendations contained in the Krebs Report (1997).

In addition, the TB Forum aims to bring together experts and interested parties to consider new measures which might be taken to control TB in cattle. Membership consists of representatives from the British Veterinary Association, the British Cattle Veterinary Association, the Countryside Council for Wales, the Country Land and Business Association, English Nature, the Farmers Union of Wales, The National Farmers' Union, NFU (Wales), Wildlife Trusts, the National Federation of Badger Groups, the Royal College of Veterinary Surgeons, the National Beef Association, the Tenant Farmers Association and the Royal Society for the Prevention of Cruelty to Animals.

Professor John Bourne, Chairman of the ISG is also a member of the Forum, which is chaired jointly by the Chief Veterinary Officer, Jim Scudamore, and the Head of the Animal Health Group at Defra, Peter Nash.

20 Nov 2003: Column 1202W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs

(1) what the estimated population of badgers in England was between 1973 and 1980; and what the estimate is for 2003; [140292]

(2) how many closed dairy herds in England are registered with the Department; [140294]

(3) what steps farmers can take to ensure that their cattle are not exposed to M. bovis infection where pasture might be frequented by badgers actively shedding M. bovis bacilli; [140295]

(4) if she will make a statement on the conditions under which a badger is capable of transmitting TB to cattle; and what the mechanism of transmission is; [140302]

(5) what protocol was adopted for the ecological survey carried out as part of the Krebs trials; [140303]

(6) what the potential maximum period of infectivity of adult badgers demonstrating active lesions of M. bovis infection is; [140305]

(7) what assessment she has made of the success rate, in terms of the percentage of badgers killed in a defined area, of the policy of gassing setts adopted prior to 1986; [140311]

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(8) how many cows have been subject to post-mortem examination for TB in each of the past 10 years; how many were found to be TB reactors; and how many of the reactors revealed tubercular lesions in the udder capable of contaminating milk. [140315]

Mr. Bradshaw: I will write to the hon. Member with this information shortly.

20 Nov 2003: Column 1203W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs, what advice the Department have given to farmers on keeping closed herds. [140293]

Mr. Bradshaw: The Department has provided a significant amount of advice and codes on the health and welfare of livestock. The Defra leaflet, “TB in Cattle - Reducing the Risk” suggests that farmers consider moving to a closed herd system. However, such a system still needs to be combined with other disease prevention measures to reduce risks of disease introduction and spread.

Due to loss of livestock during FMD, there was a need to replace livestock from outside sources. Defra produced a leaflet “Golden rules for a healthy herd” that gave specific advice on preventative strategies for avoiding introduction of the most important cattle diseases during restocking.

Defra has also produced a concise list of disease prevention measures (including the need to always know the health status of animals being bought or moved) in the form of a yellow card which was developed with livestock industry representatives and vets. It was sent to all livestock farmers in 2002, and is available on the Defra website.

20 Nov 2003: Column 1203W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs whether perturbation becomes a significant factor in the spread of TB to cattle where there has been incomplete clearance of badgers in a Krebs reactive area. [140296]

Mr. Bradshaw: We do not know the significance of badger perturbation in the reactive culling areas of the Krebs trial. However, it is known that badgers in a culled population do exhibit changes in their ecology and behaviour which may result in an increased risk of disease transmission.

Research on perturbation is being carried out on behalf of Defra by Oxford University and the Central Science Laboratory. Results will published once the research programme has been completed.

20 Nov 2003: Column 1203W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs, what actions are required of dairy farmers in respect of their premises following removal of (a) TB reactor and (b) infected cattle from their premises. [140299]

Mr. Bradshaw: Movement restrictions are imposed on all cattle herds when TB reactors are disclosed at the TB test. In the case of dairy herds, the Chief Environmental

20 Nov 2003: Column 1204W

Health Officer will be informed, to enable decisions to made about protecting public health. If disease is confirmed, the Consultant in Communicable Disease Control will also be informed.

Immediately following their identification, all reactors should be isolated from contact with any other cattle. These cattle must remain in isolation until removal for slaughter. Animals that react inconclusively to the test must also be isolated both from the herd and from the conclusive reactors. They must remain in isolation pending retest.

After removal of reactor(s) or affected animals a Cleansing and Disinfection Notice is issued to the owner. The notice covers the isolation building and any other areas of the farm identified by the Veterinary Officer as likely to be infected. Up to a month is allowed to carry out the disinfection and cleansing.

Movement restrictions remain in place until the herd has tested clear at least once (twice where infection is confirmed after post-mortem).

20 Nov 2003: Column 1204W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what class of pathogen bovis is. [140300]

Mr. Bradshaw: Defra classify animal pathogens for the purpose of administering the Importation of Animal Pathogens Order 1980 and the Specified Animal Pathogens Order 1998. Mycobacterium bovis is classified as a Group 2 animal pathogen.

Pathogens classified as group 2 are disease producing organisms which are either exotic or produce notifiable disease, but have a low risk of spread from the laboratory.

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Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs, what estimate she has made of the likely incidence of TB breakdown in cattle in Krebs reactive areas, if 100 per cent. culling of badger population in the areas had been carried out. [140301]

Mr. Bradshaw: Under the protocols for the Krebs trial, badgers are culled using cage trapping, which is estimated to remove around 80 per cent. of the badger population. Analysis of the trial data from reactive areas is therefore only able to indicate what effect this level of removal on and around farms which have had a TB breakdown will have on the incidence of TB breakdown in the reactive area as a whole. It is not possible to estimate what effect an alternative capture method, which would remove 100 per cent., rather than 80 per cent., of the badgers would have.

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs whether cattle-to-cattle transmission of TB has occurred in the Krebs reactive trial area. [140304]

Mr. Bradshaw: It is highly likely that some cattle-to-cattle transmission of TB has occurred in all Krebs trial areas, although it is impossible to quantify the number of herd breakdowns which might have been due to this means of infection.

20 Nov 2003: Column 1205W

An epidemiological survey in the Krebs badger culling trial areas, known as “TB99”, is looking at risk factors in TB outbreaks. A preliminary analysis is set out in the Third Report of the Independent Scientific Group on Cattle TB.

20 Nov 2003: Column 1205W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what assessment she has made of the OIE limit of the incidence of TB in cattle necessary to maintain TB-free status trading for the UK, expressed as a percentage of the national herd. [140308]

Mr. Bradshaw: The Office of International des Epizooties (OIE) provides expertise for the control of animal diseases.

Article 2.3.3.2 of the OIE Terrestrial Animal Health Code states that for a Country or zone to qualify as officially free from bovine tuberculosis, shall satisfy the following requirements:

Bovine tuberculosis is notifiable in the country;

20 Nov 2003 : Column 1206W

99.8 per cent. of the herds in the considered geographical area have been officially free from bovine tuberculosis for at least the past three years as disclosed by periodic testing of all cattle in the area to determine the absence of bovine tuberculosis.

Periodic testing of all cattle is not required in an area where a surveillance programme reveals that 99.9 percent of the cattle have been in herds officially free from tuberculosis for at least six years.

Defra statistics on the incidence of bovine TB are not collated in a format that allows for a comparison with the OIE incidence of TB.

Table 1 as follows shows the percentage of the national herd that was under restriction between 2001 and 2003.

Current EU restrictions relating to BSE prevent export of live bovines from the United Kingdom. Export of beef and beef products are permissible under the Date-based Export Scheme (for UK origin beef), or, the XAP Scheme (for beef of foreign origin). Beef from cattle under TB restrictions cannot be exported.

Table 1 percentage of national herd under restriction
Year 2003(10) 2002(11) 2001(11)
Total number of herds registered on Ventnet 96,865 99,584 105,714
Of which were under TB2 restrictions because of a TB incident at some time during the year 4,740 4,174 2,511
Percentage of national herd under restriction (cumulative figure for the year) 4.8 4.1 2.3

(10) Data represents 1 January 2003 to 30 September 2003–11–24
(11) Data for 2001 and 2002 are not comparable to other years, because TB testing was significantly reduced during the foot and mouth outbreak, and when testing resumed, it was targeted at higher risk herds.

20 Nov 2003: Column 1204W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs what percentage of registered cattle herds in the UK are under TB restriction. [140309]

Mr. Bradshaw: The data requested is not available for the UK. However, between 1 January and 30 September 2003 approximately 4.9 per cent. (4,740*) of cattle herds in Great Britain had been under TB restriction.

* Provisional data downloaded from the State Veterinary Service database on the 20–21 October 2003—subject to change as outstanding TB test and culture results become available.

20 Nov 2003: Column 1204W

Mr. Paterson: To ask the Secretary of State for Environment, Food and Rural Affairs how many carcases produced from cows not reported as TB reactors originating from farms in England were found to be positive for M. bovis or otherwise infected with bovine tuberculosis as a result of samples taken at slaughterhouses in the last 10 years. [140314]

Mr. Bradshaw: All cattle slaughtered in licensed slaughterhouses are subject to inspection by Meat Hygiene Service officials. Where lesions suggestive of TB are found at post-mortem, samples are sent for laboratory culture of M. bovis, the causative organism of bovine tuberculosis. Cases identified by the MHS (but not sent for slaughter as reactors) are “slaughterhouse cases”.

Confirmed slaughterhouse cases
Total slaughterhouse cases Number Percentage
2002 385 132 34
2001 194 65 36
2000 239 114 48
1999 178 92 52
1998 94 50 53
1997 10 4 40
1996 10 3 30
1995 4 3 75

Data not currently available for 1994 and 1993