A concerted effort to monitor and test for bovine viral diarrhoea (BVD) is keeping the virus at bay on a Cheshire beef unit, which has learned its disease lesson the hard way. Nigel Potts of Mount Farm, Macclesfield, says his two BVD experiences have been the most depressing things he has encountered in his farming career. BVD first killed 15 calves in 2008 from his then 90-head herd. A second outbreak in 2012 led to two persistently infected (PI) calves […]