《Tab.5 NDF elimination rate of six types of roughage at 0-72 h and parameter analysis of rumen degra

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《Rumen Degradation Characteristics of Six Types of Common Roughage in Khorchin Beef Cattle in Tongliao City》

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As shown in Tab.5，the NDF rumen degradability of six types of roughage increased with the extension of culture time.The NDF elimination rates of alfalfa hay and alfalfa block were significantly higher than those of the rest types of roughage at 6 and 12 h（P<0.05）.The NDF elimination rates of alfalfa hay were significantly higher than those of the rest types of roughage at 24，48 and 72 h，respectively（P<0.05）；the elimination rate of corn stover was the lowest at 24 h，and that of leymus chinensis was the lowest at 48 and72 h.The NDF rapid degradation part a of alfalfa hay and alfalfa block were significantly higher than those of corn stover，corn silage，leymus chinensis and rice straw in sequence（P<0.05）.The ED of the NDF of alfalfa hay was significantly higher than those of alfalfa block，corn silage，leymus chinensis，corn stover and rice straw in sequence（P<0.05）.