不同保存方法对玉米秸营养价值的影响

The Effects of Conservation Methods on the Nutritive Value of Corn Straw

本试验研究了玉米秸在不同保存方法 (露天保存、棚舍保存、青贮和氨化 )下 ,营养成分的变化情况 ,并选用 2头安装有永久性瘤胃瘘管的去势本地黄牛来研究不同保存方法对瘤胃降解率的影响。结果表明 :不同保存方法对玉米秸 (粗蛋白 )CP、NDF (中性洗涤纤维 )、ADF (酸性洗涤纤维 )和WSC (水溶性碳水化合物 )含量影响差异极显著 (P <0 0 1) ,对OM含量影响差异不显著 (P >0 0 5 ) ;对DM和OM瘤胃降解率的影响差异显著 (P <0 0 5 ) ,而对NDF和ADF降解率的影响不显著 (P >0 0 5 ) ,烘干和棚舍阴干DM、OM降解率显著高于露天晒干 (P<0 0 1)。

The study determined the change condition of major nutrients in corn straw in different conservation methods (open-air conservation ?shed conservation ?silage and ammoniation). And two steers with permanent rumen cannulas were used to determine the effects of conversation methods on the rumen degradabilities. The results show: The CP?NDF?ADF and WSC content of corn straw were higher significantly affected by the different conservation methods (P<0 01). The DMD and OMD content were significant (P<0 05); NDFD and ADFD were not significant (P>0 05), and oven-drying > shed conservation > open-air conservation for the rumen degradabilities of DMD and OMD.