延胡索酸二钠对早期断奶羔羊生长性能、瘤胃发酵功能及胃肠道发育的影响  

Effects of Disodium Fumarate on Growth Performance,Ruminal Fermentation Function and Gastrointestinal Tract Development of Early Weaning Lambs

作　　者：刘云芳[1] 赖瀚卿 王婷[1] 王新峰[1] 潘晓亮[1] 

机构地区：[1]石河子大学动物科技学院,石河子832000

出　　处：《动物营养学报》2016年第3期834-841,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家自然科学基金项目(31360558);兵团绵羊重点实验室开放课题(2013KLS04);石河子大学高层次人材专项(RCZX201203;RCZX201102)

摘　　要：本研究旨在探讨饲粮中添加延胡索酸二钠对早期断奶羔羊生长性能、瘤胃发酵功能及胃肠道发育的影响。试验选用30只(50±5)日龄、体重为(25±2)kg的公羔,随机分为3组,每组10只。对照组饲喂基础饲粮,试验组在对照组的基础上添加0.5%和1.0%的延胡索酸二钠。试验期70 d。结果显示:1)饲粮添加延胡索酸二钠提高了平均日增重,其中1.0%组显著高于对照组(P<0.05)。2)延胡索酸二钠未显著影响瘤胃液p H(P>0.05),而显著降低了氨态氮浓度(P<0.05);延胡索酸二钠极显著降低了瘤胃液乳酸浓度(P<0.01);1.0%组瘤胃液总挥发性脂肪酸、乙酸和丙酸浓度显著高于对照组(P<0.05)。3)试验组小肠绒毛高度均高于对照组,其中0.5%组羔羊的十二指肠、空肠、回肠的肠绒毛高度分别显著增加了30.3%、30.6%、46.1%(P<0.05);试验组的十二指肠绒毛高度/隐窝深度显著大于对照组(P<0.05),其中0.5%组的绒毛高度/隐窝深度较对照组增加了58.6%;0.5%和1.0%组羔羊的瘤胃壁乳头高度分别比对照组提高139.84和156.74μm(P>0.05);试验组瘤胃壁乳头密度与对照组比较无显著差异(P>0.05)。结果表明,添加延胡索酸二钠显著提高了羔羊的生长性能,促进了早期断奶羔羊瘤胃及肠道的发育。The present study was conducted to explore the effects of disodium fumarate（ DF） on growth performance,ruminal fermentation function and gastrointestinal tract development of early weaning lambs. Thirty male lambs with（ 50 ± 5） days of age and（ 25 ± 2） kg of body weight were selected and randomly allocated into three groups with ten sheep in each group. Lambs in control group were fed a basal diet,the experimental groups were added 0. 5% and 1. 0% DF on the basis of diet,respectively. The trial lasted for 70 days. The results showed as follows： 1） the addition of DF increased average daily gain,and 1. 0% group was significantly higher than control group（ P〈 0. 05）. 2） DF had no significant effect on rumen fluid p H（ P 0. 05）,but significantly decreased ammonia nitrogen concentration（ P〉 0. 05）; DF significantly decreased lactic acid concentration in rumen fluid（ P 〈0. 01）; compared with control group,the concentrations of total volatile fatty acid,acetate acid and propionate in 1. 0% group were significantly increased（ P〈 0. 05）. 3） The villi height of intestinal tract in experimental groups was higher than that in control group,and that of duodenum,jejunum and ileum in 0. 5%group was significantly increased by 30. 3%,30. 6%,46. 1%（ P〈 0. 05）,respectively; the ratio of villi height to crypt depth of duodenum in experimental groups was significantly higher than that in control group（ P〈 0.05）,and that in 0. 5% group was increased by 58. 6%; compared with control group,the height of papilla on ruminal wall in 0. 5% and 1. 0% groups was increased by 139. 84 and 156. 74 μm（ P 〉0. 05）; there was no significant difference in the density of papilla between experimental groups and control group（ P〉 0. 05）. In general,it is revealed that DF addition can improve growth performance of weaning lambs,and stimulate the gastrointestinal tract development of early weaning lambs.

关 键 词：延胡索酸二钠 断奶羔羊 生长性能 胃肠道 

分 类 号：S826[农业科学—畜牧学]