Badgers: Bovine Tuberculosis

Lord De Mauley Excerpts

Monday 9th December 2013 Grand Committee

[The Parliamentary Under-Secretary of State, Department for Environment, Food and Rural Affairs (Lord De Mauley) (Con)]

My Lords, we must not underestimate the scale of the devastation wrought on our farming industry and rural communities by the worsening bovine tuberculosis epidemic; I think most noble Lords who have spoken today have acknowledged that. It is unacceptable that in the 10 years to 31 December 2012, more than 305,000 cattle were compulsorily slaughtered as reactors or direct contacts in Great Britain. Moreover, a further 22,512 cattle have been slaughtered up to August this year solely because of bovine TB. As the noble Lord, Lord Knight, said, over the past 10 years the disease alone has cost the taxpayer more than £500 million. It is estimated that it will cost another £1 billion in the next decade unless we can use all the available tools to intensify the action that needs to be taken.

In the face of such a grave problem, difficult decisions must be made. There is no single solution—no silver bullet—so we must use every possible means at our disposal. As the noble Lord, Lord Krebs, said, strict controls on cattle movement must be applied, loopholes closed and measures tightened, a point I will come back to later. However, that alone will not reverse the inexorable spread of this devastating disease. The wildlife reservoir in the high-risk areas cannot be ignored, and it needs addressing urgently. That is why the Government have developed an ambitious and comprehensive strategy for combating the disease, with the aim of achieving bTB-free status for England within 25 years while maintaining a sustainable livestock industry. I thank my noble friend Lady Parminter for her comments on our intention to eradicate the disease.

The strategy emphasises that robust cattle controls must be combined with tackling the reservoir of disease in badgers, drawing on demonstrably successful approaches from around the world. It includes a comprehensive set of controls focused on the different disease risks in different areas of the country. The strategy also covers the development of new tools to control bTB such as diagnostic tests, alternative badger controls and, indeed, vaccination. Tackling the reservoir of disease in badgers is a key element of the strategy and we are committed to making it work. In this matter we must be guided by the experience of other countries which have successfully rid themselves of this terrible disease.

We have clear evidence from the randomised badger culling trial on the role of badgers in the spread of the disease in endemic areas. Work by Professor Christl Donnelly, to which the noble Lord, Lord Trees, referred, suggests that up to half of all cattle herds found to have TB in the high-risk area of England contracted the disease directly or indirectly from infected badgers. The evidence also shows that, carried out in the right way, badger culling will make a significant difference in reducing the incidence of TB in cattle. Other countries, such as the Republic of Ireland, New Zealand, Australia and the United States, have eradicated or greatly reduced the levels of bTB by culling infected wildlife in combination with tight cattle controls.

The results of the RBCT have been used to estimate that culling over an area of 150 square kilometres could reduce new herd incidence of bTB by an average of 16% over nine years: enough to stop the incidence of bTB continuing to increase and even begin decreasing it. We proceeded with pilots this summer to test the assumption that controlled shooting is a safe, humane and effective means of reducing badger numbers. These four-year pilots are closely managed and monitored by the licensing authority, Natural England. The independent panel of experts is now considering the information collected during the pilots. Its report to the Government in the New Year—to answer my noble friend Lady Parminter—will inform the decision on the wider rollout of badger control in those parts of England most severely affected by this disease. The report will be made available to Parliament and the general public. We have always been clear that these were pilots from which we will learn lessons in advance of taking any decisions. We expect to be in a position to take such a decision by the end of February.

Turning to questions raised by noble Lords, the noble Lord, Lord Knight, asked why the cull had been cut short in Gloucestershire. The decision that the licence for the extension should end was taken following discussions between the cull company in west Gloucestershire, Natural England and the NFU. The end of the cage-trapping season was agreed by the cull company and Natural England as a sensible point to stop activity. The decision was based on the decreasing number of badgers seen by contractors over the preceding weeks, which made achieving a further significant reduction in future weeks unlikely. Given that this was the first year of controlled shooting of badgers, it was uncertain how the winter would affect badger behaviour, but it was deemed likely that even fewer badgers would be seen due to the onset of cold weather, when they tend to stay underground for longer.

The noble Lords, Lord Knight and Lord Krebs, referred to perturbation. The RBCTs concluded that larger areas would offer greater benefits. The Gloucestershire area is 311 square kilometres and the Somerset one is 256 square kilometres. These are very substantially larger than those in the RBCTs. In the pilot culls, we were able to emphasise hard boundaries around the cull areas: sea, significant rivers and dual carriageways, each of which produces a significant challenge for badgers to cross. We are also conducting biosecurity measures, including vaccination, in the buffer zone around the cull areas. These are some of the lessons of the RBCTs on which we have been able to capitalise.

The noble Lords, Lord Knight and Lord Krebs, and my noble friend Lord King referred to population estimates in the context of a prospective rollout of culling in future years. Estimating badger populations is difficult, as is the case for all wildlife populations. However, the fact that it is difficult does not mean that we should avoid tackling disease in wildlife. When looking at lessons learnt in the pilots, we will look at how the efficacy of culling could be best assessed in future. In the RBCTs, as many badgers were removed as possible rather than having a fixed target. This approach, repeated each year for a number of years, resulted in an estimated 70% removal rate. This was not based on an estimate of the badger population in the area; instead, an estimate of the reduction of the badger population was made based on field signs and road kill over four years.

The noble Lord, Lord Knight, said that in Gloucestershire, the proportion of badgers killed was not more than 40%. It is worth saying that the most effective culls during the RBCTs had removal rates of between 64% and 76%, with an average of 70%. However, three areas had initial culls of lower effectiveness, with removal rates of below 40%. Those areas with low reductions caught up in subsequent years so that the reduction in population at the end of culling was comparable to those areas with good initial culls.

The noble Lord, Lord Knight, asked about the advice from the Chief Veterinary Officer. That advice was that a further increase in the number of badgers culled over the initial six-week period would improve the disease-control benefits achieved even further and enable them to accrue earlier. It was his view that a further significant reduction of the badger population in the first year would increase the likelihood of disease benefits in cattle over the full four years of the cull. A copy of his advice to the Secretary of State on the case for extending the culls in both Somerset and Gloucestershire was made public on 18 October.

The noble Lord, Lord Knight, asked about costs. The costs of the pilots must be put in the overall context of tackling the disease. Each TB outbreak costs an average of £34,000 and if left unchecked the disease will cost the taxpayer, as I said earlier, approximately £1 billion over the next 10 years. We must start tackling TB in wildlife to bring the disease under control and begin reducing the bill to taxpayers. We will know more about the costs of the pilots once the final figures have been disclosed and scrutinised.

The costs of the police efforts in Gloucestershire, for example, are likely to have been higher than expected. However, the uncertainty around costs provided an additional reason for the decision to proceed cautiously with two pilots before considering wider roll-out, where many of the current costs will not apply. The pilots will enable us to test our and the farming industry’s cost assumptions for areas where there is uncertainty, such as policing, and take these into account in a decision to roll out the policy more widely. As planned, costs will be reviewed after the conclusion of the pilots when all the information is available.

The noble Lord, Lord Knight, asked about vaccination. As noble Lords know, there are practical difficulties in using the injectable badger vaccine, including the cost and the fact that each badger must be trapped by a trained and licensed operator. Crucially, the vaccination does not cure already infected badgers and provides only limited protection to a proportion of uninfected badgers. Furthermore, unlike culling, we do not know what effect vaccinating badgers has on TB in cattle. Developing an oral badger vaccine remains a top priority for the Government. It is still at research stage and we cannot say when it will be deployable in the field, but we are progressing with this work as fast as possible and any additional spending will not speed the process up.

My noble friend Lady Parminter and the noble Lord, Lord Krebs, asked what we will do with the independent expert panel’s advice. The independent panel was established to provide a robust scientific peer review of the analysis of the data gathered during the pilot culls to support an assessment of the humaneness and efficacy of controlled shooting. When the panel has finished reviewing the output of this monitoring, it will submit its assessment and conclusions to Ministers. The panel will not be making recommendations about the humaneness of controlled shooting, but its conclusions about the robustness of the data will enable Ministers to make informed decisions about its use as a culling method in future years.

Measures are in place to ensure that the evidence base resulting from the pilots is robust. This is the first time a cull of this nature has been carried out and there are lessons that we can learn from the pilots. The panel’s report will be published in due course after it has been submitted to Ministers, along with the supporting evidence, and in deciding how to proceed we will consider it extremely carefully.

I have a number of other answers that I would like to have given noble Lords and I undertake to write with various answers. The noble Lord, Lord Trees, spoke about the Welsh Government providing funding for vaccination. We are providing the same amount of funding as the Welsh Government to help start-up vaccination in the annual TB testing area, and the fund will also be used to subsidise training and competence certification for staff and volunteers of voluntary and community sector organisations wishing to become lay badger vaccinators.

Although we have much to learn from this year’s experience, conducting two pilots has been a significant achievement and is another major step towards halting the spread of bovine TB. In helping us to achieve this, local farmers and landowners have undertaken the pilots in both areas, often in difficult terrain and weather, and in the face of a sustained campaign of harassment, intimidation and widespread criminal activity. I pay tribute to those undertaking the pilots for not wilting in the face of this and for showing commendable restraint in the manner in which they have conducted themselves throughout.

Controlling the disease in wildlife has to remain a key part of our TB strategy. No country has successfully dealt with TB without tackling the disease in both wildlife and cattle. Unless we tackle bovine TB in badgers, I fear that not only will we never eradicate it in cattle and free our livestock farmers of a huge burden but that we will see the disease in cattle and that accompanying burden continue to grow and spread until the disease is endemic throughout the whole of England. This Government are resolved to prevent this happening and to achieve freedom from TB in 25 years.

Committee adjourned at 6.29 pm.