Contamination of semen and its effect on avian fertility.
D000818:Animals; D002452:Cell Count; D002645:Chickens / Q000502:physiology*; D005243:Feces; D005260:Female; D005298:Fertility; D008297:Male; D009068:Movement; D012661:Semen / Q000032:analysis*; D013094:Spermatozoa