日粮蛋白水平对樱桃谷肉鸭生产性能的影响  

Effects of Dietary Crude Protein Level on Performance of Cherry Valley Broiler Ducks

作　　者：张佳兰[1] 肖立新[1] 吴力专[1] 张兴[1] 何受春[1] 吴世勇[1] 秦尚平[1] 

机构地区：[1]长江大学动物科学学院,湖北荆州434025

出　　处：《长江大学学报（自科版）（中旬）》2010年第2期21-23,共3页Journal of Yangtze University(Nature Science Edition)

基　　金：湖北省教育厅资助项目(Q20091206)

摘　　要：采用单因子试验将192只14日龄樱桃谷肉鸭随机分为4组,每组4个重复,每重复12只,研究日粮蛋白质水平对3-6周龄肉鸭生产性能的影响。试验日粮蛋白设12.5%、14.5%、16.5%和18.5%4个水平。42日龄时测定每组的增重,采食量和料肉比,并从每个重复选取2只鸭屠宰测定肉鸭屠宰性能。结果表明：日粮蛋白水平对肉鸭体重有显著影响（P〈0.05）,42日龄时蛋白水平16.5%和12.5%组肉鸭体重显著大于其他2组（P〈0.05）;而蛋白水平14.5%组肉鸭增重显著小于其他3组（P〈0.05）,料肉比极显著大于其他组（P〈0.01）;日粮蛋白水平对肉鸭胸肌率和腿肌率有显著影响（P〈0.05）,蛋白水平18.5%组肉鸭胸肌率和腿肌率显著大于其他组（P〈0.05）,极显著大于蛋白水平12.5%组（P〈0.01）。可见,低蛋白水平（12.5%）饲喂肉鸭可以获得相同的体重、增重和料肉比,但胸肌率和腿肌率较低。A single factorial experiment containing four crude protein levels(12.5%,14.5%,16.5% and 18.5%) was conducted to study effects of dietary crude protein level on performance of cherry valley broiler ducks from 3 to 6 weeks of age.192 14-days-old cherry valley ducks were randomly assigned into 4 pens which contained 4 replicates and 12 ducks per replicate.At 42 d of age,weight gain,feed intake and feed gain ratio of ducks from each pen were measured,and 2 ducks selected randomly from each replicate were slaughtered to evaluate slaughter performance.The results showed that the significant effect of dietary protein on body weight was observed in ducklings at 42-days-old(P<0.05).The ducks with dietary crude protein level 16.5% and 12.5% were heavier than those in other pens.The ducks with dietary crude protein levels 14.5% were lighter than others and the feed gain ratio was highest(P<0.01).The significant effect of dietary protein on the percentage of breast meat and leg meat was observed.Dietary crude protein level affected the percentage of breast meat and leg meat(P<0.05).The percentage of breast meat and leg meat for duck with dietary crude protein level 18.5% is greater than that of others(P<0.05).Low dietary crude protein level can gain the same body weight,weight gain,and feed gain ratio,but lower in the percent of breast meat and leg meat.

关 键 词：蛋白水平 生产性能 樱桃谷肉鸭 

分 类 号：S816.4[农业科学—饲料科学]