Reproductive physiology of the stallion: daily sperm output and testicular measurements.
D000818:Animals; D002452:Cell Count; D004542:Ejaculation; D006736:Horses / Q000502:physiology*; D008297:Male; D009929:Organ Size; D012098:Reproduction; D012661:Semen / Q000166:cytology; D013094:Spermatozoa / Q000166:cytology*; D013737:Testis / Q000033:anatomy & histology*; D013997:Time Factors