不同来源纤维对肉鸡的生长发育及胫骨矿物元素含量的影响

采用玉米淀粉-大豆分离蛋白纯合基础饲粮及不同来源纤维,配制6种试验饲粮:1、基础饲粮(不加纤程);2、纤维素;3、小麦麸;4、米糠;5、高粱糠;6、苜蓿粉。饲于7日龄肉鸡(星布罗),结果如下:1、苜蓿组采食量和体增重显著高于其它各组(P<0.05),其它各组间的体增重无显著差异(P>0.05)。2、鸡不能行走,腿病严重百分率最高者是米糠组,无腿病百分率较高的是基础组和苜蓿组。3、小麦麸组、米糠组、高粱糠组、苜蓿组胫骨中锰含量显著低于基础组和纤维素组(P<0.05),小麦麸组和米糠组胫骨锌显著低于基础组(P<0.05),纤维素组和小麦麸组胫骨铁显著高于基础组(P<0.05),苜蓿组胫骨镁显著高于基础组(P<0.05)。

EFFECTS OF DIFFERENT SOURCES OF FIBER ON PERFORMANCE AND MINERAL ELEMENT CONTENTS IN TIBIA OF BROILER

Effects of fiber on performance and mineral element contents in tibia of broiler were studied with purified basal diet supplemented with different sources of fiber ( 1 . basal diet without fiber B; 2 . cellulose C; 3 . wheat bran W; 4 . rice bran R; 5 . sorghum bran S; 6 . alfalfa meal A ) . The results showed that weight gain and feed intake of the chicken in A group was significantly higher than that of all other groups ( P<0.05) among which there were not significant differences ( P> 0.05) . Leg weakness incident was higher in R group, and lower in B and A group. Manganese content in tibia was lower in W, R, S and A groups than that in C and B groups ( P<0.05) . Zinc content in tibia was lower in W and R groups than that in B group ( P<0.05) . Iron content in tibia was higher in C and W groups than that in B group ( P<0.05) . Magnesium content in tibia was higher in A group than that in B group ( P<0.05) .