青贮玉米对湖羊生长性能、瘤胃发酵性能及血清生化指标的影响

Effects of silage corn on growth performance,rumen fermentation performance,and serum biochemical indicators of hu sheep

本研究选择36只体况良好、体重相近的3月龄湖羊为研究对象,随机分为两组,每组3个重复,每个重复6只羊,分别饲喂青贮玉米(试验组)和玉米秸秆(对照组)作为单一粗饲料配制2种日粮,从生长状况、瘤胃发酵情况及血清生化指标等几个方面进行为期60d的研究,探讨饲喂青贮玉米对湖羊的影响。结果显示,试验组湖羊的干物质采食量(DMI)和平均日增重(ADG)均显著高于对照组(P <0.05),分别提高了13.26%和21.88%;试验组湖羊F/G均低于对照组(P> 0.05);试验组瘤胃胃液的pH值显著高于对照组8.03%(P <0.05),但乙酸、丙酸、丁酸及总挥发酸均无显著影响(P> 0.05);试验组血清中总蛋白、白蛋白、球蛋白、尿素氮等血清生化指标均无显著差异(P> 0.05)。结果表明,青贮玉米能提高湖羊生长性能,并具有改善湖羊瘤胃发酵的潜力,具有推广应用价值。

This study selected 36 3-month-old Hu sheep with good physical condition and similar body weight as the research subjects,and randomly divided them into two groups,each consisting of 18 sheep,with 3 replicates per group and 6sheep per replicate.Silage corn(experimental group)and corn straw(control group)were fed separately as a single coarse feed to prepare two types of diets.A 60 day study was conducted on growth status,rumen fermentation status,and serum biochemical indicators to explore the effect of feeding silage corn on Hu sheep.The results showed that the DMI and ADG of the experimental group were significantly higher than those of the control group(P < 0.05),with an increase of 13.26% and 21.88%,respectively;while the F/G of the experimental group was lower than that of the control group(P > 0.05);The rumen pH value of the experimental group was significantly higher than that of the control group(P < 0.05),with an increase of 8.03%(P< 0.05),but acetic acid,propionic acid,butyric acid,and total volatile acid in the rumen had no significant effect(P > 0.05);There was no significant difference in serum biochemical indicators such as total protein,albumin,globulin,and urea nitrogen in the experimental group(P > 0.05).The results indicate that silage corn has the potential to improve the rumen fermentation and growth performance of Hu sheep,and has the value of promotion and application.