日粮不同蛋白质水平对育成期高邮鸭生长性能及氮沉积率的影响

本试验设计了2种蛋白质含量的日粮，通过饲养试验和代谢试验对高邮鸭育成期生长性能及日粮氮沉积率进行测定、分析，探讨高邮鸭育成期日粮蛋白质水平对其生长性能和蛋白质利用的影响。选择28 d健康、精神状况良好的高邮鸭192只，公母各半，随机分到2个处理组，每个处理4个重复，每个重复24只，分别饲喂能量相同的2种蛋白质含量（14%和16%）日粮，同一饲养管理条件下饲养111、140 d时，从每个处理中按照平均体重选择8只，入代谢笼进行代谢试验。试验结果表明，29～140 d高邮鸭饲喂蛋白质含量〖JP2〗为14%的日粮比饲喂蛋白质含量为16%的日粮能获得较好的生长性能和日粮氮沉积率。

Effects of Dietary Crude Protein Content on the Gaoyou Ducks Growth Performance and the Nitrogen Retention Rate

Two factorial experiments were carried out to evaluate the effects of dietary protein level,on yields of feed intake,body weight,the nitrogen retention rate and body measurements of Gaoyou ducks at 28 and 140 days of age.Two diets similar in their energy content and differing markedly in their protein content,in which the dietary protein were 14% and 16%,respectively,were feed to Gaoyou ducks in this experiment.Until at the 140 days of age,8 ducks were choose from every treatment on the average weight of gr...