The contents of DM,CP,NDF,pH,NH?3-N and organic acid in fermented corn straw and DM,CP and DNF degradability in rumen at 48h were determined.

• 分别测定了玉米黄贮饲料中的干物质，粗蛋白，中性洗涤纤维，pH值，氨态氮，有机酸变化及48h瘤胃干物质、粗蛋白、中性洗涤纤维降解率。