罗曼褐商品蛋鸡育成期不同蛋白质水平饲喂效果的分析

试验测定罗曼褐商品蛋鸡14～18周龄不同蛋白质水平的饲喂效果,试验日粮是玉米—豆粕型。适宜能量(ME,11 3MJ/kg)的三个蛋白质水平组即Ⅰ、Ⅱ、Ⅲ组(Pr 分别为14 5%、13 2%、12%),一个低能组(ME,10 5MJ/kg)的蛋白质水平为13 4%;另设山西预配添加剂厂育成鸡料作为对照组,蛋白质水平为15%。共设5个处理。结果表明,各组日增重、胫骨长和抗弯强度差异不显著;耗料量是Ⅰ、Ⅱ、Ⅲ组差异不显著,显著低于对照组和低能组,而Ⅰ、Ⅱ、Ⅲ组中又以Ⅱ组耗料最低,饲料效率最佳。

Study on the Results of Roman Brown Commercial Egg-layers for Different Protein Level

Effects of different protein levels in diets,corn\|soqa bean as the major component,on Roman Brown commercial egg\|layers at 14 to 18 weeks of age were studied,which contained three appropriate energy growps (ME,113 MJ/kg):with 145%(group Ⅰ), 132%(group Ⅱ), and 12% (group Ⅲ) of protein levels respectively,a low energy group with 105 MJ/kg of metabolic energy(ME) and 134% of protein,and a control group with 113 MJ/kg of ME and 150%of protein.The results showed that the feed consumptions among,groups Ⅰ?Ⅱand Ⅲ were not different (\%P>\%005),but that of groupⅡ was the least,which was lower than that of control group(\%P\%<005),and the lower energy group (\%P<\%001).The difference average daily gain,length of rikii and strength of bend resistence among all groups were not significant.The above results suggested that group Ⅱ was best in feed consumption and feed efficiency.