Twenty-five satisfactory and 25 unsatisfactory potential breeder bulls were examined with a modified Shulman spermagglutination test for the presence of spermagglutinating antibodies in their serum and seminal fluid. This was done to determine whether antibodies to spermatozoa were a contributing factor to classification of the bull as an unsatisfactory potential breeder. No correlation was found between classification as an unsatisfactory potential breeder and the presence of spermagglutinating antibodies. In addition, indirect fluorescent antibody tests were performed to detect antisperm antibodies in the serum and seminal fluid of the bulls. Again, no correlation was found between antisperm antibodies and breeding soundness classification. Finally, there was no correlation between the age of the bulls and occurrences of spermagglutination antibodies in serum or seminal fluid.
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