Infertility in a Hereford bull associated with increased numbers of detached sperm heads in his ejaculate.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology*; D007248:Infertility, Male / Q000209:etiology / Q000662:veterinary*; D008297:Male; D012661:Semen / Q000166:cytology*; D013077:Sperm Head / Q000473:pathology