饲粮中添加小麦低聚肽对肉羊生长性能、营养物质表观消化率和小肠形态的影响  

Effects of Dietary Supplementation with Wheat Oligopeptides on Growth Performance,Apparent Digestibility of Nutrients,and Intestinal Morphology in Meat Sheep

作　　者：白晨[1] 盛宇飞 张昊 哈斯额尔敦[1] 敖长金[1] 张喜胜 BAI Chen;SHENG Yufei;ZHANG Hao;KHAS Erdene;AO Changjin;ZHANG Xisheng(Key Laboratory of Animal Nutrition and Feed Science,College of Animal Science,Inner Mongolia Agricultural University,Inner Mongolia Hohhot 010018,China;Xilinhot Dingan Biological Technology Co.,Ltd.,Inner Mongolia Xilinhot 026000,China)

机构地区：[1]内蒙古农业大学动物科学学院,内蒙古自治区高校动物营养与饲料科学重点实验室,内蒙古呼和浩特010018 [2]锡林浩特市鼎安生物科技有限公司,内蒙古锡林浩特026000

出　　处：《饲料工业》2023年第3期86-91,共6页Feed Industry

基　　金：内蒙古农业大学高层次人才引进科研启动项目[NDYB2018-26]。

摘　　要：试验旨在研究饲粮中添加小麦低聚肽对肉羊生长性能、营养物质表观消化率和小肠形态的影响。试验选取30只体重[(35.58±3.18)kg]相近的4月龄小尾寒羊公羊,随机分为2组,每组15只。对照组饲喂基础日粮,试验组饲喂基础日粮+0.3%小麦低聚肽,试验期60 d。结果表明:(1)试验组第16~30 d平均日增重显著高于对照组(P<0.05),料重比显著低于对照组(P<0.05)。(2)试验组干物质、粗蛋白、中性洗涤纤维、酸性洗涤纤维、钙和磷的表观消化率显著高于对照组(P<0.05)。(3)试验组十二指肠和空肠绒毛高度显著高于对照组(P<0.05),十二指肠、空肠和回肠的隐窝深度显著低于对照组(P<0.05),十二指肠、空肠和回肠绒毛高度/隐窝深度(V/C)值显著高于对照组(P<0.05)。试验结果表明,小麦低聚肽可通过改变小尾寒羊小肠的形态、提高营养物质表观消化率,进而提高生长性能。The purpose of this experiment was to study the effect of dietary supplementation with wheat oligopeptides on the growth performance,apparent digestibility of nutrients and the small intestine morphology of mutton sheep.Thirty small-tailed Han sheep with similar body weight[(35.58±3.18)kg]of four months age were selected and randomly divided into two groups with 15 each.The control group was fed with the basic diet,the experimental group was fed with basic diet plus 0.3%wheat oligopeptide.The experimental period was 60 d.The results showed that:(1)The average daily gain of the experimental group in 15-30 d was significantly higher than that of the control group(P<0.05),and the F/G ratio was significantly lower than that of the control group(P<0.05).(2)The apparent digestibility of dry matter,crude protein,neutral detergent fiber(NDF),acid detergent fiber(ADF),calcium and phosphorus in the experimental group were significantly high-er than that in the control group(P<0.05).(3)Thelength of duodenum and jejunum villus in the ex-perimental group were significantly higher thanthat in the control group(P<0.05),the depth ofcrypts in the duodenum,jejunum and ileum weresignificantly lower than that in the control group(P<0.05),the V/C values duodenum,jejunum and ileum in the experimental group were significantly higher than that in the control group(P<0.05).The re-sults shows that wheat oligopeptide can improved the production performance by changing the small intes-tine morphology and improve the digestibility of nutrients in small-tailed Han sheep.

关 键 词：肉羊 小麦低聚肽 生长性能 表观消化率 小肠形态 

分 类 号：S816.4[农业科学—饲料科学]