代谢能水平对6～10周龄扬州鹅增重效率及体脂沉积的影响  

Effect of Metabolic Energy Levels on Efficiency of Wight Gain and Fat Deposit of 6～10 Week-old Yangzhou Geese

作　　者：喻礼怀[1] 王梦芝[1] 王洪荣[1] 魏宗友[1] 

机构地区：[1]扬州大学动物科学与技术学院,江苏扬州225009

出　　处：《中国畜牧杂志》2010年第21期28-32,68,共6页Chinese Journal of Animal Science

摘　　要：为研究日粮代谢能水平对6～10周龄扬州鹅增重效率及体脂沉积的影响,试验选用35日龄、体重相近的扬州鹅200只,随机分成4组,日粮代谢能水平分别为10.11、11.19、12.37、13.45 MJ/kg,进行为期35 d的饲养试验。结果表明:代谢能水平对腹脂率、胸腿肌脂肪含量影响显著,随代谢能水平升高而升高;皮下脂肪厚、肌间脂肪宽度、胸腿肌的蛋白和水分含量组间差异都不显著(P>0.05)。日采食量随代谢能水平的上升显著下降(P<0.05),但日进食代谢能却依次增加。日增重以试验3组最高为54.81 g,显著高于试验1组。代谢能增重比率以试验3组最高,随代谢能水平的增加呈现S型曲线变化。综上代谢能水平对体脂沉积和增重效率有显著的影响,为获得最高的代谢能增重比率,日粮代谢能以12.37 MJ/kg组最佳。The objective of this experiment was to investigate the effect of metabolic energy levels on the efficiency of weight gain and the fat deposit of 6-10 week-old Yangzhou Geese.A total of 200 healthy Yangzhou geese（with similar weight）,aged 35 days,were randomly divided into 4 groups.They were fed on diets with different energy levels（10.11,11.19,12.37,and 13.45 MJ/kg）,and 35-day feed trail was conducted in the Experimental Farm of Yangzhou University.The results showed that the percentage of abdominal fat,and the fat percent of muscle were significantly affected by energy levels,and they were all increased with the inereasing of energy level in diets.Daily feed intake was tend to be decreased with the increasing of metabolic energy level in diet（P 0.05）;while the intake ME per day（MJ/d） were still increased with the increasing of energy level.Daily gain was the highest in the 3rd group,significantly higher than that of the 1st group.Similarly,the ratio of weight gain to ME intake was also the highest in the 3rd group,and showing an Sshaped curve according to metabolic energy level.In conclusion,the optional ME was 12.37 MJ/kg,for the highest efficiency of weight gain and comparatively lower fat deposit,in Yangzhou Geese during 6-10 week age.

关 键 词：代谢能水平 增重效率 体脂沉积 扬州鹅 

分 类 号：S835.5[农业科学—畜牧学]