When a cow is called “pregnant” but turns up “open”- Could Neospora caninum be to Blame? Dr. Michelle Arnold, DVM (UK Ruminant Veterinarian, US YAKS Science and Health Committees “Neosporosis” is caused by a single celled protozoan parasite called Neospora caninum and is a major cause of abortion and weak calves in cattle across the … Continue reading Cow Turns up open