为评定苜蓿草和羊草在生长兔上的营养价值,选择同龄健康生长兔18只,随机分为3组,每组6个重复,雌雄各50％,试验兔单笼饲养,定量自由采食和饮水.试验饲粮用套算法配制,替代比例20％,采用全收粪法进行消化试验,预试期和试验期各5d.结果表明:苜蓿草和羊草中的表观消化能分别为(8.80+2.90)MJ· kg-1和(5.96+1.95)MJ·kg-1,能量(GE)、干物质(DM)、粗蛋白(CP)、纤维素(CF、NDF、ADF)、粗脂肪(EE)、粗灰分(Ash)、Ca、P和无氮浸出物(NFE)的表观消化率为:苜蓿草49.54％、52.35％、81.95％、23.7％、29.04％、26.73％、87.83％、58.56％、72.39％、45.95％和80.99％；羊草33.59％、39.42％、81.94％、23.89％、29.20％、26.84％、87.02％、58.38％、71.72％、45.41％和80.72％.由结果可知,苜蓿草和羊草饲喂生长兔具有较高的消化能,但个体间差异较大,对CP、EE和Ca的消化率较高,对CF的消化率低,不能消化酸性洗涤木质素(ADL).%The trial was carried out to assess digestibility of energy and main nutrient in Medicago saliva L and Leymus chinensis for growing rabbits. Eighteen growing rabbits were randomly allocated in three treatments, each of which contained 3 male and 3 female, the rabbits were fed individually, and free choice feeding and water. One group was fed basic diet, other two groups were fed test diet including 80% basal diet and 20% Me die ago saliva L or Leymus chinensis respectively, by means of all fecal collection to carry out digest experiment. Both pre-trial and trial period was 5 days. The results showed that the apparent digestible energy of Medicago saliva L and Leymus chinensis were (8.80±2.90)MJ ? Kg"' and (5.96±1.95)MJ-kg"1 respectively. Apparent digestibility of GE, DM, CP, CF, NDF, ADF, EE, Ash, Ca, P and NFE in Medicago sativa L were 49.54, 52.35, 81.95, 23.70, 29.04, 26.73, 87.83, 58.56, 72.39, 45.95 and 80.99%, respectively of which in Leymus chinensis were33.59, 39.42, 81.94, 23.89, 29.20, 26.84, 87.02, 58.38, 71.72, 45.41 and 80.72%.Conclusion was that the ADE in Medicago sativa L and Leymus chinensis for growing rabbits was higher, but it had great variation. Availability of CP,EE and Ca were high, and the availability of CF in Medicago sativa L and Leymus chinensis for rabbits were low, the rabbits can not digest lignin.
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