动物营养学报2011，Vol.23Issue(3)：499-505,7.DOI:10.3969/j.issn.1006-267x.2011.03.022
谷氨酰胺和L-肉碱对低温下肉羊瘤胃纤维分解菌的影响
Effects of Glutamine and L-carnitine on Ruminal Cellulolytic Bacteria of Sheep under Low Temperatures
摘要
Abstract
The study was conducted to explore the effects of dietary glutamine and L-carnitine supplementation on the alleviation of cold stress and ruminal cellulolytic bacteria of sheep, and also to provide theoretical evidence and useful reference for the application of anti-stress agent in practice. Nine healthy North East China Merino ×German Mutton Merino sheep were selected and L9 ( 34) orthogonal design was adopted which included three glutamine levels (0, 0. 6％ , 1. 2％ ) and three L-carnitine levels (0, 75, 150 mg/kg) in this experiment. The sheep were bred under low ambient temperatures ( from 10 ℃ to 0 ℃ ) , and fed different levels of glutamine and L-carnitine supplemental diets. The results were showed as follows : glutamine had a trend to decrease the relative content of Ruminococcus albus ( RA) in rumen ( P ＞0. 05) , L-carnitine could significantly decrease the relative content of RA in rumen (P ＜0.05) , but glutamine combined with L-carnitine had a trend to relieve the RA decreasing; glutamine could significantly increase the relative content of Ruminococcus flavefaciens ( RF) in rumen (P ＜0. 05) , L-carnitine had a trend to increase the relative content of RF in rumen ( P ＞0. 05) , but glutamine combined with L-carnitine could further increase RF in rumen; glutamine and L-carnitine had a trend to decrease the relative content of Bacteroides succinogenes ( BS) in rumen ( P ＞0. 05) , but glutamine combined with L-carnitine had a trend to relieve the BS decreasing. The results suggest that glutamine combined with L-carnitine can relieve the relative contents of RA and BS decreasing, and further increase RF in rumen of sheep under low temperatures. It is known from the results that sheep can get effective changes of the rumen microflora and the ability to resist cold stress when fed diets supplemented with 1. 2％ glutamine and 75 mg/kg L-carnitine. [ Chinese Journal of Animal Nutrition ,2011 ,23 ( 3 ) : 499-505 ]关键词
低温/谷氨酰胺/L-肉碱/瘤胃纤维分解菌分类
农业科技引用本文复制引用
李士泽,高福久,杨玉英,姜宁,赵雅楠,李玉恒,杨焕民,计红..谷氨酰胺和L-肉碱对低温下肉羊瘤胃纤维分解菌的影响[J].动物营养学报,2011,23(3):499-505,7.基金项目
大庆高新区创新基金项目(DQGX08YF038) （DQGX08YF038）
2010年度黑龙江省高等学校科技创新团队建设计划项目 （）
