The results were as follow:In test 1, 100 the first hybrid of Romney X Merino ram lambs were divided into 5 groups (20 animals each group) on basis of initial body weight.

 
  • 试验一:试验采用120只罗姆尼杂交一代公羔羊作为试验动物,根据体重分为6组,每组20只羊。 除试验1组以外,其余5组分别饲喂成分依次叠加的添加剂,以研究添加剂不同组分对羔羊体增重的影响。
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