title: Effects of nutrition level of concentrate-based diets on growth performance and carcass characteristics of Hainan black goats.
abstract: This study assessed the effects of different nutrition levels of diets on growth performance and carcass characteristics of Hainan black goat. Twenty-four goats were divided into six diet treatments, which consisted of two levels of crude protein (CP; 15 and 17 %) and three levels of digestive energy (DE; 11.72, 12.55, and 13.39 MJ/kg). The results revealed that 17 % CP significantly (P < 0.05) increased ADG and improved FCR compared with 15 % CP. Therefore, the CP levels of diet affected growth performance. CP and DE levels in the diet had no significant effects (P > 0.05) on carcass characteristics of the goats. The mRNA expression levels of insulin-like growth factor 1 in muscle tissues increased with increasing CP and DE levels (P < 0.05).
authors.affiliation: Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, 571737, Hainan, People's Republic of China.
authors.forename: Dingfa
authors.initials: D
authors.lastname: Wang
authors.forename: Luli
authors.initials: L
authors.lastname: Zhou
authors.forename: Hanlin
authors.initials: H
authors.lastname: Zhou
authors.forename: Guanyu
authors.initials: G
authors.lastname: Hou
authors.forename: Mao
authors.initials: M
authors.lastname: Li
authors.forename: Liguang
authors.initials: L
authors.lastname: Shi
authors.forename: Xianzhou
authors.initials: X
authors.lastname: Huang
authors.forename: Song
authors.initials: S
authors.lastname: Guan
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001823:Body Composition / Q000187:drug effects*; D001835:Body Weight; D004032:Diet / Q000662:veterinary; D004063:Digestion; D006041:Goats / Q000235:genetics / Q000254:growth & development*; D009753:Nutritive Value; D015430:Weight Gain / Q000187:drug effects