不同蛋白源对爱拔益家肉鸡生长性能、屠宰性能和血清生化指标的影响

【目的】研究饲料中不同蛋白源对爱拔益家肉鸡(AA肉鸡)的生长性能、屠宰性能和血清生化指标的影响。【方法】将480只1日龄的AA肉仔鸡随机分为4个试验组,每组8个重复,每个重复15只,试验周期共42 d。试验期间自由采食饮水,对照组饲喂玉米-豆粕型基础日粮,试验组分别以饲喂5％发酵棉粕、发酵菜籽粕及混合发酵棉粕(2.5％)和菜籽粕(2.5％)替代对照组中的豆粕。【结果】与对照组相比,21日龄和42日龄发酵棉粕-菜籽粕组试验鸡的体重分别升高3.54％和4.52％,差异显著(P<0.05)。与发酵棉粕组、发酵菜籽粕组相比,发酵棉粕-菜籽粕组的试验鸡体重分别显著增加4.67％和3.96％(P<0.05)。1~42日龄,与对照组相比,发酵棉粕-菜籽粕试验组的平均日增重显著增加4.63％(P<0.05);与发酵棉粕组和发酵菜籽粕组相比,发酵棉粕-菜籽粕组分别升高4.76％和4.05％,差异显著(P<0.05)。与发酵棉粕组相比,发酵棉粕-菜籽粕组的腹脂率显著降低14.68％(P<0.05)。【结论】发酵棉粕-菜籽粕组试验鸡会显著提高肉鸡的平均日增重、体重、屠宰率及血清中的谷草转氨酶的含量,但对其他指标无影响。日粮中添加5％的混合发酵棉粕-菜籽粕的效果优于单一添加使用。

Effects of Different Protein Sources on Growth Performance,Slaughter Performance and Serum Biochemical Indexes of Broilers

【Objective】 The purpose of the experiment is to study the effects of different protein sources in feed on the growth performance, slaughter performance and blood biochemical indexes of AA broiler. 【Methods】 480 1-day-old AA broilers were randomly divided into 4 experimental groups, each group had 8 replicates, 15 replicates each, with a total period of 42 days. During the experiment, the control group was fed with corn soybean meal basic diet, and the experimental group was fed with 5％ fermented cottonseed meal, fermented rapeseed meal, mixed fermented cottonseed meal (2.5％) and rapeseed meal (2.5％) replacing the feed of the control group. 【Results】 The results showed that the body weight of 21 day old and 42 day old fermented cottonseed meal group increased by 3.54％ and 4.52％, respectively (P<0.05), compared with the control group. Compared with the fermented cottonseed meal group and fermented rapeseed meal group, the body weight of the experimental chickens in the fermented cottonseed meal group increased significantly by 4.67％ and 3.96％, respectively (P<0.05). Compared with the control group, the average daily gain of fermented cottonseed meal group increased by 4.63％ (P<0.05). Compared with fermented cottonseed meal group and fermented rapeseed meal group, the average daily gain of fermented cottonseed meal group increased by 4.76％ and 4.05％, respectively (P<0.05). Compared with the fermented cottonseed meal group, the abdominal fat rate of fermented cottonseed meal group was significantly decreased by 14.68％ (P<0.05). 【Conclusion】 The results also showed that the average daily gain, body weight, slaughter rate and the content of glutamic oxaloacetic transaminase in serum of broilers in the fermented cottonseed meal group were significantly increased, but the other indexes were not affected. In conclusion, the effect of 5％ mixed fermented cottonseed meal was better than that of single addition.