牛饲料用干玉米秸秆营养分布规律及适口性研究

Dry Corn Stalk Nutrient Distribution and Palatability Selection

为了更好推进秸秆资源开发利用,针对目前玉米秸秆作为饲料的研究现状,对干玉米秸秆的适口性和营养成分的分布规律进行了试验研究,分别测定了两种干玉米秸秆上、中、下三部分及叶片中粗蛋白、粗脂肪、粗纤维、还原糖、钙和磷的含量。结果表明:玉米秸秆果穗以上部分适口性和营养成分均好于下部秸秆,进而提出玉米秸秆用做饲料应优先选择果穗以上部分茎秆,果穗以下部分可以适当还田。为玉米收获及秸秆综合利用提供参考依据。

With corn stalks as a feed,the palatability and the distribution of nutrients of dry corn stalks were studied,and the crude protein,crude fat,crude fiber,reducing sugar,calcium and phosphorus contents in the upper middle and lower parts of two types of dry corn stalks and the leaves were meatured.The results showed that the palatability and nutritional ingredients of the stalk part above ear were better than the lower part.The project provided a theoretical reference basis for corn harvest and utilization of the stalk.