Duration 6 years commencing Spring 2000 Team and Leader Sinclair Mayne, Fred Gordon, Conrad Ferris and Maurice McCoy. Organisations involved Agricultural Research Institute of Northern Ireland, Veterinary Science Division. Background and Summary Dairy her infertility, mastitis and lameness have been highlighted as the three most significant problems on dairy farms in Northern Ireland in both recent surveys undertaken by AgriSearch. It has long been established that fertility and mastitis are strongly negatively correlated with genetic improvement of milk production...