Effects of nutrition level of concentrate-based diets on growth performance and carcass characteristics of Hainan black goats |
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Authors: | Dingfa Wang Luli Zhou Hanlin Zhou Guanyu Hou Mao Li Liguang Shi Xianzhou Huang Song Guan |
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Institution: | 1. Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou, 571737, Hainan, People’s Republic of China
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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). |
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