A sound procedure is to hold these purchased cows separately the first breeding season to avoid introducing trichomoniasis, brucellosis and otherdiseases into your herd. Beef herds in Nebraska are in one or more pastures during the breeding season with one or multiple bulls. Pasture to pasture movement of animals tends to increase more toward the end of the breeding season, which could increase the transmission of trichomoniasis. A conditionally licensed vaccine is available for vaccinating the cow. The vaccine does decrease the duration of infection.
Further research is needed to establish the efficacy of the vaccine in preventing infection.
Control in an Infected Herd Preputial cultures are conducted on all bulls at weekly intervals for three weeks, and once prior to breeding, for several years. All infected bulls are culled and sold for slaughter. All open and late bred cows are culled. Cows that do not have a calf by side at the start of breeding season also should be culled. Breeding season should not be longer than 60 days as longer breeding season increases chances of exposure to infection.