Dr_turkey

Since mid-1980s fertility of UK dairy herds has declined year-on-year as is evidenced by the current calving interval of around 420 days. To put it into perspective, NMR in 2010 estimated the cost of fertility in an average dairy herd of 100 cows was around £25,000 per year. This included lost milk output, excessive culling and attendant veterinary costs. It is argued that genetic selection ...