Posted by Jerry/MT on May 11, 2017 at 12:25:59 from (206.183.116.145):
In Reply to: Help cattlemen posted by notjustair on May 10, 2017 at 18:14:20:
Having your bull fertility tested before breeding season is always a good idea. High temperature weather can render bulls temporarily sterile. Since you have a closed herd, it"s unlikely that an outside cow brought this problem into your herd.
I have not heard of any of the cattle VD"s being spread by coyotes however, leptospirosis which and cause the death of a viable fetus is spread by coyotes. There are other diseases that can also cause abortion or fetal death and re-absorbtion. We vaccinate our cows yearly prior to bull turn out with Vista 5 V L as a precaution. Since you are having a pretty serious problem on a large scale, I would advice you to have a vet check your cows and your suspect bull for signs of a disease problem and recommend a course of vaccination to get it under control.
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