不同组合功能性寡糖对稻草在锦江黄牛瘤胃降解率的影响

Effects of Different Combinations of Functional Oligosaccharides on Rumen Degradability of Rice Straw in Jinjiang Cattle

本试验旨在研究不同组合功能性寡糖对稻草在锦江黄牛瘤胃降解率的影响。试验选择3头体质量(300±20)kg,安装有永久性瘤胃瘘管锦江黄牛。采用尼龙袋和自身对照方法,分为3期试验,第1期为对照期,不添加寡糖,第2期和第3期分别为添加功能性寡糖组合GT1和组合GT2,测定稻草稻草在锦江黄牛瘤胃中DM、OM、CP、NDF和ADF的72 h降解率,并进行相关性分析。结果表明:与对照期相比,添加功能性寡糖GTl和GT2组合均能够极显著提高DM、OM、NDF、ADF降解率(P<0.01),GT1和GT2组合之间差异不显著(P>0.05)。不同组合功能性寡糖对CP降解率无显著影响(P>0.05),稻草的OM与DM、NDF、ADF在锦江黄牛瘤胃72 h降解率之间呈强相关,稻草的有机物与粗蛋白降解率之间相关性不高。

This experiment was conducted to study the Effects of different combinations of functional oligosaccharides on rumen degradability of rice straw in Jinjiang cattle.（Method） Three healthy Jinjiang cattle with permanent rumen cannula and weight of（300±20） kg were selected.By self-contrasted method and the nylon bag method,the test was divided into three phases,the first phase：the control period,basal diet was fed without any oligosaccharides,the second period,fed with the basal diet added with GT1 combination of functional oligosaccharides,the third period,fed with the basal diet added with GT2 combination of functional oligosaccharides,the experiment lasted 14 days for every period.The rumen degradability of DM,OM,CP, NDF,ADF of 72 h for rice straw was determined,and the correlation analysised.The results showed that： compared with the control period,GT1 and GT2 combinations of functional oligosaccharides very significantly improved,the rumen degradability of DM,OM,NDF,ADF for rice straw（P0.01）,and the difference between the GTl and GT2 combinations was not significant（P0.05）;the difference in CP was not significant（P0.05） among the control,GT1 and GT2（P0.05）.The correlations of rumen degradability for 72 h between DM,NDF,ADF and OM in Jinjiang cattle were strong,the rumen degradability of CP was not closely related to OM.