نبذة مختصرة : The association of sperm antibodies with infertility in 1346 Zebu cattle, including 435 males and 911 females, was serologically investigated. Sperm antibodies were not detected in yearling animals and very few animals were positive for sperm antibodies below the age of 36 months. The proportion of animals, both males and females, with sperm antibodies increased significantly with age (P
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