The primary subjects of cattle and ruminant research are udder health as well as diseases associated with calves, the hoof and the digestive tract. The primary subjects of cattle and ruminant research ...

So the cow immune system finds making the antibodies easily. It is thought the cow's "ruminant" digestive system which ferments grass in order to digest it is a Wild West of hostile bacteria.

According to the U.S. Department of Agriculture’s National Animal Health Monitoring System, internal parasites, which are ...

“Thankfully their digestive system is built to help them survive and thrive on a natural forage-based ... intake of nutrients to promote the overall health and longevity of your ranching partners.” ...