谷氨酰胺对断奶肉兔肠道发育的影响

发布时间：2018-05-03 13:07

本文选题：谷氨酰胺 + 肉兔　；参考：《动物营养学报》2017年09期

【摘要】：本试验旨在研究谷氨酰胺对肉兔肠道发育的影响。试验选择28日龄断奶新西兰白兔360只,随机分成4个组,每个组9个重复,每个重复10只(公母各占1/2)。4组试验兔分别饲喂在基础饲粮基础上添加0(对照)、0.4%、0.8%和1.2%谷氨酰胺的试验饲粮,试验期为4周。结果表明:饲粮添加谷氨酰胺对肉兔35、42和56日龄时的胃重、盲肠重和小肠长度以及56日龄时的小肠重无显著影响(P0.05),但饲粮添加0.8%谷氨酰胺可以显著提高肉兔35和42日龄时的小肠重(P0.05);饲粮添加0.8%和1.2%谷氨酰胺可以显著提高肉兔35和42日龄时的十二指肠和空肠绒毛高度(P0.05),同时饲粮添加0.8%谷氨酰胺还可以显著提高肉兔35和42日龄时的回肠绒毛高度以及56日龄时的十二指肠和空肠绒毛高度(P0.05);饲粮添加0.8%谷氨酰胺可以显著降低肉兔35和42日龄时的十二指肠和空肠隐窝深度以及35日龄时的回肠隐窝深度(P0.05)。由此可见,饲粮添加谷氨酰胺可以促进肉兔断奶后1~2周的肠道发育,本试验条件下,肉兔饲粮中谷氨酰胺适宜添加水平为0.8%。
[Abstract]:The purpose of this study was to study the effect of glutamine on intestinal development in rabbits. A total of 360 New Zealand white rabbits were randomly divided into 4 groups with 9 replicates in each group. Ten rabbits (male and female, 1 / 2 / 4) were fed with 0% glutamine on the basis of basal diet respectively. The experiment period was 4 weeks for the control group of 0.4% and 1.2% glutamine. The results showed that Glutamine was added to the diet for the stomach weight of meat rabbits at the age of 35, 42 and 56 days. The weight of caecum and the length of small intestine and the weight of small intestine at 56 days of age had no significant effect on P0.05, but the dietary supplementation of 0.8% glutamine could significantly increase the weight of small intestine of rabbits at 35 and 42 days of age, and the dietary supplementation of 0.8% and 1.2% glutamine could significantly increase the weight of small intestine. The height of duodenum and jejunum villi of rabbits at 35 and 42 days of age was P0.05, and the feeding supplemented with 0.8% glutamine could significantly increase the villi height of ileum at 35 and 42 days of age and the duodenum and jejunum villi at 56 days old. The depth of duodenum and jejunum recess at 35 and 42 days of age and ileal recess depth at 35 and 42 days of age were significantly decreased by dietary supplementation of 0.8% glutamine. It can be seen that the supplementation of glutamine in diet can promote the development of intestinal tract in rabbits after weaning for 1 ~ 2 weeks. Under the experimental conditions, the optimum level of glutamine supplementation in the diet of the meat rabbits is 0.8%.
【作者单位】：四川省畜牧科学研究院;动物遗传育种四川省重点实验室;
【基金】：国家兔产业技术体系(CARS-44-B-4) 四川省应用基础(2016JY0037) 公益性行业(农业)科研专项经费(201303143) 四川省育种攻关项目(2016NYZ0046)
【分类号】：S829.1

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