Some factors influencing semen characteristics in range bulls.
D000367:Age Factors; D000821:Animal Feed; D000818:Animals; D001835:Body Weight; D002417:Cattle / Q000502:physiology*; D005298:Fertility; D008297:Male; D012621:Seasons; D012661:Semen / Q000166:cytology / Q000502:physiology; D013081:Sperm Motility; D013094:Spermatozoa / Q000166:cytology