'Tail-stump' defect affecting the spermatozoa of two Charolais bulls.
A specific spermatozoal defect was found in two apparently sterile Charolais bulls. Eighty to 90 per cent of the spermatozoa had a stump, or a droplet-like appendage, instead of a normal tail.
Milk Marketing Board Cattle Breeding Centre, Welshpool, Powys.
G
G
Williams
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology*; D007248:Infertility, Male / Q000209:etiology / Q000662:veterinary*; D008297:Male; D013082:Sperm Tail / Q000648:ultrastructure; D013094:Spermatozoa / Q000002:abnormalities*