湖羊羔羊早期断乳（7日龄）后代乳粉饲喂效果研究

选择早期断乳(7日龄)湖羊双羔,随机分成试验组A和B,分别饲喂高蛋白、高脂肪含量的代乳粉A和高蛋白、中等脂肪含量的代乳粉B。通过38 d羔羊代乳粉集中饲喂试验,结果显示,试验组A羔羊1~45 d平均日增重与对照组A1间差异不显著(P0.05),其中,30~40日龄日增重显著(P0.05)高于对照组A1;试验组B羔羊1~45 d平均日增重显著低于对照组B1(P0.05);在体尺指标中,两个组别的试验组羔羊体高与对照组间无显著差异(P0.05),体长、胸围和管围在20日龄时,试验组B羔羊显著低于对照组B1(P0.05),30日龄时,试验组A和B羔羊胸围分别显著(P0.05)低于对照组A1和B1;试验组A羔羊体尺生长速度快于试验组B,但生长速度回升转折点落后于试验组B。表明早期断乳(7日龄)湖羊羔羊选用高脂肪含量的代乳粉A的饲喂效果好于中等脂肪含量的代乳粉B。

Study on milk replacer for early weaning (7-day old) Hu sheep lambs

The experimental early weaning (7-day old) Hu sheep lambs were randomly divided into groups of A and B and they were feeding with milk replacer A and B for 38 days,correspondingly.Milk replacer A contains high crude protein and high crude fat,and milk replacer B contains high crude protein and medium crude fat.Results showed that the average daily gain of the lambs in group A with feeding of replacer A for 1-45 days was not significantly (＞0.05) lower than that in the control group A1,while the average daily gain of the lambs in experimental group A with feeding of replacer A for 30-40 days was significant higher than that in control group A1.In group B,the average daily gain of the lambs was significantly (P＜0.05) lower than that in the control group B1.As regard to body measurements,the height of the lambs in A and B had no significant difference (P＞0.05) compared to those in the control groups of A1 and B1.At 20 days of age,the chest girth,body length and cannon circumference of the lambs in experimental group B were significantly (＜0.05) lower than those in the control group B1.At 30 days of age,the chest girth of the lambs in experimental group A and B was significantly (P＜0.05) lower than that in the control group A1 and B1,respectively.The measurement results showed that the growth speed of the lamb body in experimental group A was quicker than that in experimental group B,but the turning point where the growth speed was falling occurred later than that in experimental group B.The result indicated that milk replacer A is better than milk replacer B for the growth of early weaning (7-day old) Husheep lambs.