不同日粮组成对羔羊生长性能的影响

The effect of different diet compositions on growth performance of lambs

为了研究不同粗饲料来源及不同加工处理的精料补充料对羔羊生长性能的影响,试验采用单因子完全随机分组设计,将3月龄健康断奶母羔16只随机分为A、B、C、D组,每组4只,A组饲喂玉米秸秆+精料补充颗粒料,B组饲喂玉米秸秆+浓缩颗粒料+整粒玉米,C组饲喂羊草+精料补充颗粒料,D组饲喂羊草+浓缩颗粒料+整粒玉米。试验期共计105 d,其中预饲期为15 d,正试期为90 d。结果表明:4种不同日粮组合对3月龄羔羊生产性能的影响均不显著(P<0.05)。说明以上几种日粮组成对羔羊生长性能均无不良影响,在今后实际生产中可以用玉米秸秆作为育肥羔羊的粗饲料来源,使用"浓缩颗粒料+整粒玉米"作为精料补充料。

corn stalk ;Leymus chinensis ; concentrate supplement ;lamb ; growth performance Abstract：To study the effect of concentrate supplements with different roughage sources and different processing on growth performance of lambs,completely random single- factor grouping design was used in this experiment. A total of 16 3 - month - old healthy weaned female lambs were randomly assigned into four groups（ A, B, C, D） which contained 4 animals per group and were fed with different diet compositions. Group A was fed with corn stalks plus concentrate supplement pellets, while group B with corn stalks, concentrated pellets plus whole corns; group C with Leymus chinensis plus concentrate supplement pellets;group D with Leymus chinensis, concentrated pellets plus whole corns. The whole period of this experiment was 105 days which contained 15 days for preliminary feeding stage and 90 days for formal feeding stage. The re- sults showed that there was no significant difference （ P 〉 O. 05 ） in different diet compositions on growth performance of 3 - month - old lambs a- mong the four groups. The results suggested that no bad effect of different diet compositions was found on growth performance of lambs. In future practice, corn stalk could be used as the roughage source for fattening lambs, which was in the form of concentrate supplement pellets ： concen- trated pellets plus whole corns.