Q&A: If a bull is used to "clean up" after AI and one figures 50% of the AI’ed cattle will take. Can one double the number of cows you put with the bull?
Dr. Rick Rasby, Professor of Animal Science, Animal Science, University of Nebraska
A: 1:25 bull to cow ratio would be appropriate for a mature bull. 50% AI conception rate is close to industry average, so if you AIed 50 head of cows, one could expect 25 cows for the bull to breed. Single sire pastures can be a challenge and will take more management.