本试验选用112羽平均体重为(37.50±0.33)g的1日龄爱拔益加肉仔鸡以研究固态发酵菜粕对肉仔鸡生长性能的影响并确定替代豆粕的适宜比例。所有鸡只随机被分为4个处理(每个处理4个重复,每个重复7只鸡),分别饲以玉米-豆粕型基础日粮及用5%、10%和15%的固态发酵菜粕替代部分豆粕的日粮。结果表明,日粮中使用15%固态发酵菜粕后肉仔鸡前期(1~21日龄)和后期(22~42日龄)的日增重均呈线性下降趋势(P<0.01),但使用量不超过10%时肉仔鸡前、后期日增重的变化并不显著(P>0.05)。使用10%以内的固态发酵菜粕对肉仔鸡前期、后期及全期的采食量无显著影响(P>0.05)。随着日粮中固态发酵菜粕使用比例的增加,肉仔鸡前期、后期以及全期的饲料转化效率均呈线性下降趋势(P<0.01),但10%以内的固态发酵菜粕对肉仔鸡后期和全期的饲料转化效率无显著影响(P>0.05)。日粮中用15%以内的固态发酵菜粕替代豆粕对肉仔鸡的肝脏和甲状腺指数无显著影响(P>0.05)。本研究的结论是,固态发酵菜粕可替代肉仔鸡日粮中的部分豆粕,但替代比例以不超过10%为宜。
This trial was conducted to study the effects of solid state fermented rapeseed meal to replace part of soybean meal on growth performance of broilers and the suitable percentage used in the diet for broilers. One hundred and twelve 1-day-old Arbor Acre broilers with an average body weight of (37.50±0.33) g were randomly divided into 4 treatments. Each treatment had 4 replicates and each replicate had 7 broilers. The broilers were fed corn-soybean basal diets in which part of soybean meal were replaced by 0, 5%, 10% and 15% solid-state fermented rapeseed meal, respectively. The results indicated that solid-state fermented rapeseed meal not more than 10% in diet did not affect the average daily gain (ADG) of broilers (P>0.05), but 15% of solid-state fermented rapeseed meal significantly reduced ADG (P<0.01) in starter (d 1~21) and grower periods (d 22~42). Fermented rapeseed meal not more than 10% in diet did not affect the average daily feed intake of broilers in each period and the feed conversion ratio (FCR) in grower and overall periods (P>0.05). However, 10% solid-state fermented rapeseed meal increased the FCR in starter period (P<0.05) and 15% solid-state fermented rapeseed meal increased FCR in grower and overall periods (P<0.05). Furthermore, the indices of liver and hypothyroid were not affected when the solid-state fermented rapeseed meal was not more than 15% (P>0.05). It was concluded that the solid-state fermented rapeseed meal could be used to replace not more than 10% soybean meal in the diet for broilers.