Effects of diets with various levels of forage rape (Brassica napus) on growth performance, carcass traits, meat quality and rumen microbiota of Hu lambs
文献类型： 外文期刊
第一作者： Du, Encun
作者： Du, Encun;Guo, Wanzheng;Zhao, Na;Chen, Fang;Fan, Qiwen;Zhang, Wei;Huang, Shaowen;Wei, Jintao;Zhou, Guangsheng;Fu, Tingdong
作者机构：
关键词： forage rape; lamb; growth performance; meat quality; rumen; microbiota
期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.639； 五年影响因子：3.803 ）
ISSN： 0022-5142
年卷期：
页码：
收录情况： SCI
摘要： BACKGROUND Apart from being an oil crop, forage rape (Brassica napus) can be used to feed ruminants. The objective of this study was to investigate the effects of pelleted total mixed ration (TMR) diets with various levels of forage rape on growth performance, carcass traits, meat quality, meat nutritional value and rumen microbiota of Hu lambs, which was important for the efficient utilization of forage rape and alleviating the shortage of high-quality forage in China. RESULTS Lambs fed on diets with 200-400 g kg(-1) forage rape had greater average daily gain (ADG) and lower feed conversion ratio (FCR) than those fed on diets with 0-100 g kg(-1) of forage rape (P < 0.05). As dietary forage rape levels increased, the content of intramuscular alpha-linolenic acid and a variety of amino acids in the muscle increased linearly (P < 0.05). No difference was found in carcass traits or meat quality among the dietary treatments (P > 0.05). However, the inclusion of forage rape increased the relative abundance of cellulolytic bacteria and short-chain fatty acid producers, including Succiniclasticum, Fibrobacter and members of the Lachnospiraceae. Besides, Succiniclasticum was found to be positively correlated with the final body weight of lambs. CONCLUSION TMR diets that included 200-400 g kg(-1) forage rape could improve the growth performance of lambs, and elevated the content of intramuscular alpha-linolenic acid and a variety of amino acids in the muscle, accompanied by increased abundance of cellulolytic bacteria in the rumen.
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