颗粒化全混合日粮对湖羊生长性能、瘤胃发酵参数和血清生化指标的影响

Effects of Pelleted Total Mixed Ration on Growth Performance,Rumen Fermentation Parameters and Serum Biochemical Indices of Hu Sheep

本试验旨在探讨颗粒化全混合日粮(TMR)对湖羊生长性能、瘤胃发酵参数和血清生化指标的影响。选取120日龄、体重为(31.40±0.55)kg的湖羊48只,随机分为2组,每组6个重复,每个重复4只(公母各占1/2)。对照组湖羊饲喂由干花生秧和精料组成的TMR,试验组是将对照组TMR制粒后再饲喂湖羊。预试期15 d,正试期56 d。结果显示:1)试验组的干物质采食量和平均日增重均显著高于对照组(P<0.05),但料重比与对照组相比差异不显著(P>0.05)。2)试验组瘤胃液各挥发性脂肪酸(VFA)和氨态氮(NH 3-N)浓度与对照组相比差异不显著(P>0.05),但瘤胃液pH显著高于对照组(P<0.05)。3)试验组各血清生化指标与对照组相比均差异不显著(P>0.05)。4)试验组每头羊的毛利润较对照组增加了26.18元。综上所述,颗粒化TMR能够改善湖羊的瘤胃发酵,提高生长性能,增加经济效益。

This experiment was conducted to study the effect of pelleted total mixed ration(TMR)on growth performance,rumen fermentation parameters and serum biochemical indices of Hu sheep.Forty-eight Hu sheep,at the age of 120 days and weighing(31.40±0.55)kg,were randomly divided into 2 groups with 6 replicates in each group and 4 sheep(half male and half female)in each group.Sheep in control group were fed a TMR made of dried peanut vine and concentrate,and the test group was pelleted with the TMR of the control group and fed to Hu sheep.The pre-test period was 15 days and the trial period was 56 days.The results showed as follows:1)the dry matter intake and average daily gain of the test group were significantly higher than those of the control group(P<0.05),but the feed/gain was not significantly different from that of the control group(P>0.05).2)The concentrations of each volatile fatty acid and ammonia nitrogen in the rumen fluid of the test group were not significantly different from those of the control group(P>0.05),but the pH of the rumen fluid of the test group was significantly higher than that of the control group(P<0.05).3)Compared with the control group,the serum biochemical indexes of the test group were not significantly different(P>0.05).4)Compared with the control group,each sheep in the test group increased its profit by RMB 26.18.In conclusion,the pelleted TMR can improve the rumen fermentation,enhance the growth performance,and increase the economic benefits of Hu sheep.