title: Puberty in beef bulls: hormone concentrations, growth, testicular development, sperm production and sexual aggressiveness in bulls of different breeds.
mesh_terms: D000374:Aggression; D000818:Animals; D001947:Breeding; D002417:Cattle / Q000254:growth & development / Q000502:physiology*; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D011627:Puberty; D012726:Sexual Behavior, Animal; D013081:Sperm Motility; D013091:Spermatogenesis; D013737:Testis / Q000254:growth & development; D013739:Testosterone / Q000097:blood
chemical_list: D013739:Testosterone; D007986:Luteinizing Hormone