title: [Effect of different protein contents in food rations for bulls on spermatogenesis].
mesh_terms: D000821:Animal Feed; D000818:Animals; D004044:Dietary Proteins / Q000494:pharmacology*; D008297:Male; D012661:Semen / Q000032:analysis; D013091:Spermatogenesis; D013094:Spermatozoa / Q000032:analysis
chemical_list: D004044:Dietary Proteins
vernacular_title: Vliianie na razlichnite kolichestva protein v dazhbata na bitsi vurkhu tiakhnata spermoproduktsiia