摘要
文章旨在探究生物发酵饲料对肉鸭生长性能、肠道形态结构和肠道屏障基因表达的影响。试验将720只1日龄肉用公鸭随机分为3组,每组10重复,每个重复24只,试验日粮在各阶段基础日粮中添加0%、3%和6%的发酵饲料,试验为期42 d。结果表明,与对照组相比,添加3%的发酵饲料组肉鸭的42 d体重显著提高3.48%(P<0.05);添加3%的发酵饲料组肉鸭的22~42 d料重比显著降低4.88%(P<0.05);添加3%的发酵饲料组肉鸭的1~42 d平均日增重显著提高3.56%(P<0.05);此外,添加0~6%的发酵饲料对各阶段肉鸭生长性能指标均无显著影响(P>0.05)。3%~6%的发酵饲料组肉鸭空肠绒毛高度和V/C值显著提高(P<0.05);添加3%和6%的发酵饲料组回肠绒毛高度和V/C值显著提高(P<0.05);此外,日粮添加0%~6%发酵饲料对肉鸭各肠段隐窝深度均无显著影响(P>0.05)。添加3%的发酵饲料组肉鸭空肠Occludin基因表达量显著提高(P<0.05);添加6%的发酵饲料组肉鸭空肠ZO-1基因表达量显著提高(P<0.05);添加3%的发酵饲料组肉鸭回肠Occludin基因表达量显著提高(P<0.05);此外,0%~6%的发酵饲料对肉鸭空肠和回肠的Claudin-1基因表达、回肠的ZO-1基因表达量均无显著影响(P>0.05)。总之,本试验结果表明,发酵饲料可改善肉鸭肠道形态结构、促进生长,本试验条件下,发酵饲料最适添加量为3%。
This study aims to investigate the effects of bio fermented feed on the growth performance,intestinal morphology,and intestinal barrier gene expression of meat ducks.7201-day-old meat male ducks were randomly divided into 3 groups,with 10 replicates in each group,with 24 ducks per replicate.On the basis of the basic feed in each stage,0%,3%,and 6%fermented feed were added as experimental feed,and the experiment lasted for 42 days.The results showed that compared with the control group,the 42 day body weight of meat ducks in the group with 3%fermented feed increased significantly by 3.48%(P<0.05);The addition of 3%fermented feed significantly reduced the feed to weight ratio of meat ducks from 22 to 42 days by 4.88%(P<0.05);The addition of 3%fermented feed significantly increased the average daily weight gain of meat ducks from 1 to 42 days by 3.56%(P<0.05);In addition,adding 0%~6%fermented feed had no significant effect on the growth performance indicators of stage meat ducks(P>0.05).The jejunal villus height and V/C value of meat ducks in the 3%~6%fermented feed group were significantly increased(P<0.05);The addition of 3%and 6%fermented feed significantly increased the villus height and V/C value in the ileum(P<0.05);In addition,adding 0%~6%fermented feed to the diet had no significant effect on the crypt depth of each intestinal segment in meat ducks(P>0.05).The addition of 3%fermented feed significantly increased the expression of Occludin gene in the jejunum of meat ducks(P<0.05);The addition of 6%fermented feed significantly increased the expression of ZO-1 gene in the jejunum of meat ducks(P<0.05);The addition of 3%fermented feed significantly increased the expression of Occludin gene in the ileum of meat ducks(P<0.05);In addition,0%~6%fermented feed had no significant effect on the expression of Claudin-1 gene in the jejunum and ileum,as well as the expression of ZO-1 gene in the ileum of meat ducks(P>0.05).In summary,the results of this experiment indicate that fermented feed can improve the intestinal morphology and promote growth of meat ducks.Under the conditions of this experiment,the optimal amount of fermented feed added is 3%.
作者
王明霞
林水中
张言召
WANG Mingxia;LIN Shuizhong;ZHANG Yanzhao(Yancheng Biological Engineering Higher Vocational Technology School,Yancheng,Jiangsu Province 224051,China)
出处
《中国饲料》
北大核心
2024年第18期73-76,共4页
China Feed
关键词
肉鸭
发酵饲料
生长性能
肠道形态
屏障基因
meat duck
fermented feed
growth performance
intestinal morphology
barrier genes
