菜籽粕替代豆粕对乡鸡育肥期应用效果的研究

Application of rapeseed in replacement of soybean in the diet for fattening of Xiang broiler

试验选用180羽120日龄育肥期乡鸡,研究不同比例菜籽粕替代豆粕对乡鸡生长性能的影响并确定替代豆粕的适宜比例。试验鸡群分为3个处理组,每个处理4个重复,每个重复15只,分别饲以玉米-豆粕型基础日粮及4%和8%菜籽粕替代部分豆粕的日粮。结果表明,各组间鸡只增重差异不显著,育肥前期饲料转化率高于育肥后期。8%替代组其胸肌率和腹脂率明显低于未替代组和4%替代组。以4%菜籽粕部分替代豆粕对乡鸡育肥效果与基础日粮组相似。因此,以4%菜籽粕部分替代豆粕,不但可以缓解我省冬季冰雪气候条件下饲料原料短缺的现状,而且还可以降低饲料成本,提高畜禽养殖业的经济效益。

This trial was conducted to study the effects of rapeseed meal in replacement part of soybean meal on the growth performance of Xiang broilers and the suitable percentage used in the diet for broilers during fat-tening.180 broilers at 120 d of Xiang broiler were randomly divided into 3 treatments,and each treatment had 4 replicates with 15 broilers.The broilers were fed with corn-soybean diets,in which part of soybean meal were replaced by 4% and 8% rapeseed meal,respectively.The results showed that rapeseed meal replacement did not affect body weight gain,and early feed conversion ratio was higher than that in later periods.However,8% rape-seed meal replacement decreased breast muscle rate,leg muscle rate and abdominal fatty rate.Indices from 4% rapeseed meal replacement showed similar traits with the control group.It was concluded that the rapeseed meal could be used to replace soybean meal with 4% in the diet for broilers during fattening.