发酵棉籽粕替代豆粕对肉鸡生长性能、血清生化指标和屠宰性能的影响

Effects of fermented cottonseed meal replacing soybean meal on growth performance,serum biochemical indicators and slaughter performance in broilers

文章旨在研究发酵棉籽粕替代豆粕对肉鸡生长性能、血清生化指标和屠宰性能的影响。试验将400羽1日龄白羽肉鸡随机分为4组,每组10个重复,每重复10只。试验组分别使用0%、2%、4%和8%的发酵棉籽粕替代基础日粮中的豆粕,试验为期42d。试验结果表明,与对照组相比,使用2%发酵棉籽粕替代日粮中的豆粕可显著提高肉鸡的终末体重和平均日增重(P <0.05),使用8%的发酵棉籽粕替代日粮中的豆粕可显著降低肉鸡的终末体重(P <0.05);与2%的添加量组相比,日粮添加8%的发酵棉籽粕可显著提高肉鸡料重比(P <0.05);此外,使用发酵棉籽粕替代豆粕对肉鸡平均日采食量无显著影响(P> 0.05)。日粮添加2%的发酵棉籽粕可显著提高肉鸡血清总蛋白和白蛋白含量(P <0.05);日粮添加8%的发酵棉籽粕可显著提高肉鸡血清谷丙转氨酶和谷草转氨酶活性(P <0.05);此外,日粮添加发酵棉籽粕对肉鸡血清甘油三酯、总胆固醇和尿素氮含量均无显著影响(P> 0.05)。日粮中添加2%的发酵棉籽粕可显著提高肉鸡的半净膛率、全净膛率和腿肌率(P <0.05);此外,日粮添加发酵棉籽粕对肉鸡腹脂率和胸肌率均无显著影响(P> 0.05)。总之,在本试验条件下,肉鸡饲料发酵棉籽粕最适添加量为2%。

This experiment aims to investigate the effects of fermented cottonseed meal replacing soybean meal on the growth performance,serum biochemical indicators,and slaughter performance of broilers.Select 4001-day-old white feather broilers and randomly divide them into 4 groups,with 10 replicates in each group,with 10 chickens per replicate.Using 0%,2%,4%,and 8%fermented cottonseed meal instead of soybean meal in the basic diet as the experimental diet,the experiment lasted for a total of 42 days.The experimental results showed that using 2%fermented cottonseed meal instead of soybean meal in the diet significantly increased the final body weight and average daily gain of broilers(P<0.05);The use of 8%fermented cottonseed meal instead of soybean meal in the diet significantly reduced the final body weight and average daily gain of broilers(P<0.05);Compared with the 2%addition group,adding 8%fermented cottonseed meal to the diet significantly increased the feed to weight ratio of broilers(P<0.05);In addition,using fermented cottonseed meal instead of soybean meal had no significant effect on the average daily feed intake of broilers(P>0.05).Adding 2%fermented cottonseed meal to the diet significantly increased the serum total protein and albumin content of broilers(P<0.05);Adding 8%fermented cottonseed meal to the diet significantly increased the activities of serum alanine aminotransferase and alanine aminotransferase in broilers(P<0.05);In addition,the addition of fermented cottonseed meal to the diet did not significantly affect the serum triglycerides,total cholesterol,and urea nitrogen content of broilers(P>0.05).Adding 2%fermented cottonseed meal to the diet significantly increased the semi net bore rate,full net bore rate,and leg muscle rate of broilers(P<0.05);In addition,the addition of fermented cottonseed meal to the diet had no significant effect on the abdominal fat rate and chest muscle rate of broilers(P>0.05).In summary,under the conditions of this experiment,the optimal amount of fermented cottonseed meal added to broiler feed is 2%.