[Worldwide causes of insemination bull losses].
D000367:Age Factors; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D007248:Infertility, Male / Q000453:epidemiology / Q000662:veterinary*; D007315:Insemination, Artificial / Q000662:veterinary; D008297:Male
Abgangsursachen bei Besamungsbullen in der Welt.