早期收割和去皮对玉米秸养分含量和体外培养干物质降解的影响

Effect of early harvested and peel off the bark on content of nutrients in maize stalk and diminution rate of DM in In vitro experiment

试验通过概略养分分析和体外消化批次培养2种方法对3种不同处理的玉米秸饲料的养分含量和干物质消失率进行了研究,并描绘了体外消化干物质消失速度的动态曲线模型。结果表明:提早收割和去掉玉米秸外皮两种处理均有利于提高秸秆饲料中的养分含量和玉米秸干物质在瘤胃内的降解,干物质消失速度的峰值提高,达到峰值的时间提前,有利于秸秆饲料在反刍动物瘤胃中的消化。如将两种方法结合利用,会收到更好的效果。

Content of nutrients in three different maize stalks and diminution r ate of DM in In vitro experiment were studied in this paper.And the graph of dim inution speed of DM was described.The results showed that both early harvested a nd peel off bark had benefit to raise the content of nutrients in feeds of maize stalk and diminution rate of DM in In vitro experiment. And the peek value of d iminution speed of DM was rising,and the time of get the peek value was move up. We can conclude that early harvested and bark are good to maize stalk be digeste d in rumen. Combine early harvest with peel off bark would accept better effect.