发酵豆粕对断奶仔猪生长性能、养分消化率和胃肠道发育的影响

Effects of fermented soybean meal on growth performance,nutrient digestibility and gastrointestinal tract development in weaned piglets

本试验旨在研究发酵豆粕对断奶仔猪生产性能、养分消化率和胃肠道发育的影响。根据胎次、体重相近原则,选择90头26日龄体重为(4.75±0.38)kg的杜枫姜断奶仔猪,分为对照组、试验Ⅰ组(日粮中添加17.5%发酵豆粕)和试验Ⅱ组(日粮中添加35%发酵豆粕),每组3个重复,各重复10头。结果表明:试验Ⅰ、Ⅱ组仔猪日增重分别增加13.90%(P<0.05)、50.55%(P<0.01),料重比分别降低4.21%(P>0.05)、19.47%(P<0.05)。试验Ⅱ组、试验Ⅰ组仔猪腹泻率均极显著(P<0.01)、(P<0.05)低于对照组。试验Ⅰ、Ⅱ组仔猪粗脂肪、粗蛋白质的消化率均显著高于对照组(P<0.05),钙、磷的消化率差异不显著。两试验组仔猪胃内容物pH、胃黏膜和胃壁厚度极显著优于对照组(P<0.01),试验Ⅱ组的肠绒毛高度和绒毛高度/隐窝深度比值显著高于对照组(P<0.05),隐窝深度和肠壁厚度显著降低。

This study was conducted to determine the effects of fermented soybean meal on growth performance, nutrients digestibility and gastrointestinal tract development in weaned piglets.Ninety weaned piglets （DuxFengxJiang）on 26 days with average body weight of {4.75±0.38）kg were allotted to the control group,treatment Ⅰ（fed 17.5 % fermented soybean meal）and treatment Ⅱ （fed 35 % fermented soybean meal）on the basis of litter and weight,3 replicates per group and 10 piglets per replicate.The results showed that：treatment Ⅰ and treatment Ⅱ were significantly higher than the control group on average daily gain,which were improved by 13.90 %（P 〈 0.05）,50.55 %（P 〈 0.01 ） respectively.The ratio of feed to gain of treatment lI and treatment I decreased by 19.47 %（P 〈 0.05） and 4.21%（P 〉 0.05） ,respectively. The diarrhea rate of the treatment Ⅱ （P 〈 0.01 ） and treatment Ⅰ（P 〈 0.05） were both significantly lower than the control group.Fermented soybean meal in treatment Ⅰ and treatment Ⅱ increased the nutrients apparent digestibility of EE,CP（P 〈 0.05）.pH value of endogenetic substance in stomach, gastric and intestine thickness of treatmen Ⅰ , Ⅱand the effects of villus height cript depth gastric and wall thickness in treatment Ⅱ were more excellent than those of the control group.