动物营养学报2017，Vol.29Issue(5)：1803-1809,7.DOI:10.3969/j.issn.1006⁃267x.2017.05.041
饲粮中谷氨酰胺添加水平对断奶至3月龄獭兔毛皮品质和肠道屏障的影响
Effects of Dietary Glutamine Supplemental Level on Fur Quality and Intestinal Barrier of Rex Rabbits during Weaner to 3 Months of Age
摘要
Abstract
The experiment was conducted to study the effects of dietary glutamine supplemental level on fur quality and intestinal barrier of Rex rabbits during weaner to 3 months of age. One hundred and eighty weaned Rex rabbits with similar body weight were randomly assigned to 5 groups with 36 replicates in each group and 1 rabbit in each replicate. Rabbits in 5 groups were fed diets supplemented with 0 ( control) , 0. 3%, 0. 6%, 0.9% and 1.2% glutamine, respectively. The pre?test period lasted for 7 days, and the experimental period las?ted for 53 days. The results showed that dietary glutamine supplemental level did not significantly affect the fur area, fur weight, hair length and hair thickness of growing Rex rabbits ( P>0.05) . Dietary glutamine supple?mental level significantly affected the villus height to crypt depth in duodenum of growing Rex rabbits ( P<0.05) . Compared with the control group, dietary supplemental with 0.9% glutamine significantly increased the mRNA expression of zonula occludens in jejunum ( P<0.05) , but significantly reduced the mRNA expression of pyruvate kinase in jejunum ( P<0.05);in addition, dietary supplemented with 0.9% glutamine significantly increased the content of secretory immunoglobulin A in duodenal mucosa ( P<0.05) . In conclusion, although dietary glutamine supplemental level does not affect the fur quality of growing Rex rabbits, improve the intesti?nal mechanical barrier and immune barrier function. Under this experimental condition, the appropriate gluta?mine supplemental level in the diet is 0.9% for Rex rabbits during weaner to 3 months of age.关键词
谷氨酰胺/生长獭兔/肠道屏障/毛皮品质Key words
glutamine/growing Rex rabbits/intestinal barrier/fur quality分类
农业科技引用本文复制引用
刘洪丽,付朝辉,刘磊,李福昌..饲粮中谷氨酰胺添加水平对断奶至3月龄獭兔毛皮品质和肠道屏障的影响[J].动物营养学报,2017,29(5):1803-1809,7.基金项目
现代农业产业技术体系建设专项(CARS?44?B?1) （CARS?44?B?1）
中国博士后科学基金资助项目(2015M580601) （2015M580601）
山东农业大学博士后基金(2015—1017) （2015—1017）
山东农业大学青年科技创新基金(2015—2016) （2015—2016）
