![]() The American Society for Theriogenology has developed minimum guidelines for a bull to pass a BSE. The test that is performed is the Breeding Soundness Examination (BSE). In order to ensure our bulls are prepared for the breeding season, bulls should be tested approximately 4 to 6 weeks prior to the breeding season. ![]() Therefore, it is important to monitor and identify if a bull has experienced frost bite, or any other injury to the scrotum/testis. We must keep in mind that spermatogenesis, the production of sperm, is a 61-day process in bulls therefore, it will take upwards of 60 days to have normal sperm again following an injury/insult. There are many factors that can affect sperm production however, the main factors that can decrease sperm production are disease, fever, injury, and extreme environmental conditions. As we prepare for the breeding season or for those in the midst of the breeding season, it is important to think about how we can manage bull fertility and understand critical factors that can impact fertility.
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