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A novel, reliable, non-invasive and rapid method has been developed to detect excretion of Mycobacterium bovis, the causal agent of bovine tuberculosis (bTB), into the environment ("shedding") by wildlife hosts. This test has been used to establish the efficacy of the bTB vaccine on reducing environmental contamination by shedding of M. bovis in the faeces (from January 2010). It has also become an important monitoring tool used by VisaVet (European Veterinary Health Surveillance), targeting bTB in wild boar and red deer (from July 2010) to establish bTB reservoirs and take action to protect the cattle stocks. Farmers will benefit and now be able to monitor environmental contamination by M. bovis, which allows them to establish biosecurity best practice.
The method includes both a presence/absence score and a quantitative assay of infectious disease load in faecal matter in the environment. This is the first standard assay to determine environmental contamination, the main route for disease spread to cattle, and allows evaluation of the impacts of vaccination, culling and increased movement of badgers during disease- management strategies. This test also enables precise monitoring of cattle herds infected with bovine tuberculosis (bTB) as it advances from the South West to the North East of England.
Impact: Economic / animal health and welfare: Established health schemes to control Bovine Viral Diarrhoea (BVD) on Scottish farms and subsequently underpinned the rationale for cost-effective control strategies that have been adopted in health schemes around the UK. The farm-level savings to the industry from future eradication are estimated by Scottish Government to be £50- £80m.
Significance: BVD is a major endemic disease of cattle in Scotland costing the dairy industry about £38M per year and an additional £11M to consumers.
Beneficiaries: Farmers, cattle, animal health authorities.
Attribution: Professors Gunn and Stott (SRUC).
Reach: The associated health schemes began in Scotland (HI Health) and now operate throughout Britain (UK CHeCS (Cattle Health Certification Standards) Health Scheme). The research underpins BVD control schemes in Ireland and other EU Member States resulting in an avoided output loss of between €500 to €4,000 per dairy farm per year.
Despite increasing surveillance, outbreaks of bovine tuberculosis (bTB) in the UK have steadily increased over the past two decades, with the disease now costing an estimated £100 million per annum in test and slaughter costs, and compensation payments.
Research by Professor Wood and Drs McKinley and Conlan has determined that successful control efforts will depend upon within-herd surveillance and also on reducing reintroduction from external sources; these results have directly altered the Department of Environment, Food and Rural Affairs' (Defra) new (July 2013) bovine TB strategy for England, which directly cites Dr Conlan's research when justifying changes in proposed regulations. On publication this research prompted questions during bovine Tuberculosis debates in both Westminster and the Scottish Parliament by Andrew George (MP, St. Ives) and Helen Eadie (MSP, Cowdenbeath) respectively. The work has also received national and specialist media coverage raising public awareness and understanding of bTB control in cattle.
Interdisciplinary research at the Royal Veterinary College (RVC) has provided core evidence on which global efforts are based in order to eradicate one of the most economically damaging diseases of the cattle industry. The research findings have helped steer national programmes to eradicate Bovine Viral Diarrhoea (BVD) across Europe, South Asia and Australasia, reducing economic losses. Professor Joe Brownlie has additionally led pilot programmes in the UK, providing data for a national scheme, campaigned widely to highlight the issue and secured farming industry awareness and support through media exposure.
The parasite Neospora caninum is the leading cause of abortion in cattle in the UK, resulting in around 6,000 abortions per year; and a $1.3b pa international problem. There are no effective drugs or vaccines to control neosporosis. University of Liverpool (UoL) research on the development of diagnostic tests, understanding the pathogenesis, epidemiology and transmission of N. caninum has made an important contribution to developing best practise herd health schemes, now offered by the Animal Health and Veterinary Laboratories Agency (AHVLA) and by a commercial company `myhealthyherd', to eradicate N. caninum infection from a herd. This has enabled cattle farmers to improve their businesses by reducing abortion rates and other costs associated with neosporosis.
The use of non-steroidal anti-inflammatory drugs (NSAIDs) for their pain-relieving properties in cattle medicine has lagged behind that of other species (e.g. companion animals) where analgesic use is now routine. University of Nottingham (UoN) research exploring the attitudes of vets and farmers to the use of NSAIDs in cattle, and subsequent marketing by Boehringer Ingelheim, a multinational pharmaceutical company, has led to a substantial increase in analgesic use. UoN research increased sales for Boehringer Ingelheim and almost doubled the UK market value of NSAIDs for use in cattle. With administration of up to 2 million additional doses per year, the research had clear benefits for animal welfare.
A University of Glasgow bovine tuberculosis (bTB) surveillance model was fundamental to new Scottish Government policy on bTB testing. Implemented on 1st January 2012, the policy change used the Glasgow model to indicate which cattle herds can be exempt from routine testing while still maintaining Scotland's Officially bTB Free status. In 2012 this translated to exemption of more than 30% of Scottish herds from routine testing, with an associated government saving of £150,000. The revised policy also provided savings to the Scottish farming industry in the region of £100,000 (2012) and limited the risks of bTB testing to farmers, veterinarians and cattle. The rapid success of the ground-breaking Scottish research-led bTB policy development has been highlighted by the Civil Service as best practice and has been presented to numerous policy audiences including the European Commission, providing the opportunity to transform industry practices and livestock surveillance policy across the UK and beyond.
Research conducted at the University of Bristol between 2003 and 2012 on the ecology, epidemiology and control of parasitic flies and worms has improved animal health and welfare in the UK and is addressing a major constraint on global food production — animal disease, particularly in the context of climate change. These are some of the impacts:
Transmission and control of parasitic zoonoses focuses on diagnostics development and epidemiological studies on zoonoses, developing approaches for the surveillance, prevention and control of non-vector borne zoonotic pathogens and demonstrating the following impact:
Infectious livestock disease poses a major threat to food production, animal welfare, trade, rural ways of life, and sometimes human health. Traditionally, the British government and the veterinary profession have approached its control in top-down fashion, relying on evidence from science and economics. However, controversy over the handling of the 2001 foot and mouth disease epidemic precipitated the recognition of social and cultural influences on understandings of disease and attitudes to their control. Woods' research has brought to light the `human factor' which has operated in the past to influence government, veterinary and farming perceptions of and reactions to livestock disease. Her findings have informed contemporary disease control initiatives, contributed to a culture change in the ways that vets and policy makers think about livestock disease, and convinced them that history offers an important evidence base. Woods' foot and mouth disease research has also had impact in South Korea in the wake of an epidemic there.