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不同来源粗蛋白-中性洗涤纤维的体外组合效应 被引量:1

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摘要 选取3种常见粗蛋白(CP)来源的饲料(大豆粕、棉籽粕、菜籽粕),与玉米秸中性洗涤纤维(NDF)按照不同比例1.8∶1、2.2∶1、2.6∶1、3.0∶1、3.4∶1、3.8∶1进行组合,每个处理6个重复,利用Menke产气法记录不同组合在3、6、12、24、48、72、96 h时的体外产气量,并测定瘤胃液pH值和NH3-N浓度。试验结果表明:进行体外评价时,所有的组合均发生正效应,组合效应值随着粗蛋白比例的上升而增高,但当粗蛋白含量很高时,正效应值又有下降的趋势。豆粕与玉米秸NDF组合时,CP/NDF比例在2.6∶1时有最大的正效应;棉籽粕与玉米秸秆NDF组合时,CP/NDF比例在2.6~3.0时有最大正效应;菜籽粕与玉米秸秆NDF组合时,CP/NDF比例在3.0时有最大正效应。
出处 《江苏农业科学》 CSCD 北大核心 2010年第6期355-358,共4页 Jiangsu Agricultural Sciences
基金 河南科技大学大学生研究训练计划项目
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