能量水平与精粗比对中卫山羊羯羔羊日粮消化性能的影响

选择体重差异不显著(P>0.05)、健康的5月龄中卫山羊羯羔羊12只,随机分为3组,每组4只。以相同蛋白水平、不同能量水平日粮饲喂各组试验羊,第一、二、三组分别喂给相同蛋白水平的低、中、高三种能量水平的日粮。结果表明:试验羊对NDF、ADF和半纤维素的表观消化率以低能量组效果最好,对于干物质的消化率则以高能组最高。而对于能量的采食量和消化代谢率则以高能组最优,中能组次之。由试验结果可知,在本试验条件下所设的3个能量组中以精粗比为57:43的高能组(粗蛋白含量11.41%,能量水平10.41 MJ/kg)的日粮水平比较有利于中卫山羊羯羔羊的生长发育。结合实际情况,中等能量组精粗比48:52消化能9.53 MJ/kg,最有利于对中卫山羊羯羔羊的组织生产。

Energy level and forage to concentrate ratio on digestion Zhongwei goat diet Jie performance of lambs

Select twelve lambs of Zhong wei with the age of five months,no significant difference in body weight(P>0.05) and very healthy.They were randomly divided into 3 groups,each group has four.Feed the test lambs in each group with the diet of the same protein level and different energy levels.The first,second and third groups were fed respectively with low,medium and high energy level of the diet which has the same protein level.The results show that: the group with low energy level is the best in apparent dige...