title: Sperm production of Holstein bulls determined from testicular spermatid reserves, after cannulation of rete testis or vas deferens, and by daily ejaculation.
mesh_terms: D000367:Age Factors; D000818:Animals; D002417:Cattle / Q000502:physiology*; D002452:Cell Count; D004542:Ejaculation; D008297:Male; D012661:Semen / Q000166:cytology; D013091:Spermatogenesis; D013094:Spermatozoa / Q000166:cytology; D013737:Testis / Q000502:physiology*; D014649:Vas Deferens / Q000502:physiology*