盐化秸秆加精料日粮对绵羊生产性能和消化的影响

Effect of Concentrate Supplements on Performance and Nutrient Digestion of Sheep Fed Corn Stover

本文报道了添加精料对饲喂盐化玉米秸秆的晋中绵羊生产性能、日粮消化的影响。处理组比对照组明显提高了绵羊的日增重、采食量和饲料转化率 (P <0 0 1 )。随着精料水平的提高 ,日粮粗纤维表观消化率下降 (P <0 0 5) ,干物质、有机物和粗蛋白质表观消化率提高 (P <0 0 5) ;肝脏中有关矿物质元素含量、血中酶活性在一定精料范围内提高 (P <0 0 5)。本研究范围内精料添加量为 32 5g/日·只时 。

Effect of concentrate supplements on performance,nutrient digestion of Jin Zhong sheep fed salt treated straw was studied.Concentrate supplement high significantly affected average daily gain,diet DM consumption and efficiency of feed utilization of JinZhong sheep(P<0 01).With the increase of concentrate le\|vel,digestibilities of CP,OM and DM increased significantly(P<0 05),whereas the digestibility of CF decreased(P<0 05).Contents of trace elements including Se,Cu,Zn,Fe and I in liver tissues and enzyme activities in blood of sheep significantly increased(P<0 05) with increasing dietary concentrate level.For concentrate supplement level,325g per sheep per day was found to be appropriate.