不同组合的全饲粮颗粒饲料肥育羔羊的效果Ⅰ.生产性能和经济效益分析

Effects of complete diet pellets with different combinations on fattening lambs Ⅰ. Analyses on production performance and economic effect

按同质原则将40只无角陶塞特（♂）与藏羊（♀）的杂交一代（4～4.5月龄）分为4个饲粮处理组，每组10只（5只公羔，5只羯羔），每只为一个重复。采用3因子（2×2×2）设计，以研究同一营养水平和在精料为主类型饲粮中，改变部分能量饲料（A因子）和蛋白质饲料（B因子）饲喂公羔和羯羔（C因子）的效果。结果表明，4个处理组日增重依组次为0.238、0.256、0.266、0.245kg/d。A、B因子及其交互作用和A、B、C因子的交互作用对羔羊采食量、日增重和饲料转化比的影响均不显著（P>0.05）；公羔的采食量、日增重和饲料转化比均极显著高于羯羔（P<0.01）。试验1至4组每只羔羊的收入分别为23.40、31.55、29.83、27.39元，公羔的平均净收入（元/只）为羯羔的194.2%。

Forty crossed lambs of Poll Dorest (♂)×Tibetan sheep(♀) (twenty male lambs and twenty wether lambs) were divided into four groups. 2×2×2 factorial designing was used in the study with factor A(energy feed), factor B(protein feed) and factor C(sex). The results showed that daily gain were 0.238, 0.256, 0.266, 0.245 kg/d in order of group. Effects of factor A , factor B and their interaction, interaction of the three factors on the intake, daily gain and feed conversion of lambs had no significant difference (P>0.05). The intake, daily gain and feed conversion of male lambs was very significant higher (P<0.01) than that of wether lambs. The results also indicated that income per lamb of the four groups were 23.40, 31.55, 29.83 and 27.39 yuan, respectively. Income of male lambs was 194.2% as high as income of wether lambs.