An Ontario reader recently asked us what could be done to treat coccidiosis in young calves.
Outbreaks are most prevalent during wet seasons and when animals are temperature-stressed.
Animals that are in poor condition and overcrowded are especially susceptible. Three species of coccidia infect cattle. Cattle that have been exposed will develop an immunity to the particular species of coccidia they encountered and often become symptomless carriers of the infection, possibly throughout their life. Cross-immunity does not occur. Once the parasites from infected animals are passed in the manure, one to 2 days of maturation in a favorable environment are needed before the micro-organisms are capable of infecting other animals.