Concurrent Infection of Young Calves With Eimeria bovis and coronavirus

Over a period of 3 summers, 21 colostrum-fed Holstein bull calves, 1-3 days of age, were selected to form 7 replicates, each consisting of 3 calves. The project was conducted during the summer because screen-testing of calves indicated a higher likelihood during warm months of obtaining calves without evidence of coronavirus infection.