Effect of age on testicular growth and consistency of Holstein and Angus bulls.
D000367:Age Factors; D000818:Animals; D001947:Breeding; D002417:Cattle / Q000254:growth & development*; D008297:Male; D012611:Scrotum / Q000033:anatomy & histology / Q000254:growth & development; D012621:Seasons; D013737:Testis / Q000033:anatomy & histology / Q000254:growth & development