全收粪法与尼龙袋法测定不同水平丝兰皂甙日粮养分降解率的相关性研究

Study on correlation between apparet digestibility and rumen disappearance of nutrients at different level of sarsa-saponine rations by total feces collection method and nylon bag technique

选用12只雄性东北细毛羊,按随机区组试验设计,采用全收粪法和尼龙袋法分别测定饲喂4个水平(分别为0、100、200和300 mg/kg)丝兰皂甙条件下绵羊日粮有机物质(OM)、干物质(DM)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)的表观消化率和48 h瘤胃降解率,同时分析两种方法的相关性。消化试验与瘤胃降解试验结果表明,日粮各养分的降解率呈相同的变化趋势,经SAS软件一元线性分析表明,两种方法所得的结果呈强的正相关(P<0.01),因而在具备瘤胃瘘管羊时,可用尼龙袋法简化日粮养分的营养价值评定。

Twelve male local sheep with permanent rumen cannula were used to study the correlation between apparet digestibility and rumen disappearance of nutrients at different level Salsa- saponine rations （0,100,200 和 300 mg/kg）. The experiment design was a completely randomized block design. The results showed that OM, DM, NDF, ADF apparet digestibility and rumen disappearance of four groups had the same changing direction. Through SAS analysis, There was a strongly positive correlation between the apparent digestibility and the rumen disappearance of OM, DM, NDF, ADF in different level of Salsa- saponine rations （P〈0.01）. Therefore, the nylon bag technique might simplify the evaluation of nutritive value when sheep fitted with rumen fiscula is available.