Seasonal variations in the incidence of sperm morphological abnormalities in dairy bulls regularly used for artificial insemination.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D007315:Insemination, Artificial / Q000662:veterinary*; D008297:Male; D012621:Seasons; D013077:Sperm Head / Q000166:cytology; D013082:Sperm Tail / Q000166:cytology; D013094:Spermatozoa / Q000002:abnormalities*