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Trends of Nutrient Components and Rumen Degradability of Perfoliate Rosinweed (Silphium perfoliatum) at Different Growth Stages
Author(s): 
Pages: 92-97
Year: Issue:  6
Journal: CHINESE JOURNAL OF GRASSLAND

Keyword:  串叶松香草生育期干燥方法营养物质瘤胃降解率;
Abstract: 对不同生育期串叶松香草的营养物质变化以及干燥方法(烘干、自然晒干)对其营养成分的影响进行了研究,并进一步探讨其瘤胃降解动态趋势.结果表明,随着生育期的推迟,串叶松香草营养物质变化同其他牧草相一致,但是其粗蛋白质含量下降速度较快,从莲座叶丛期到抽茎期其降幅可达25.62%.试验还表明,其再生草品质略低于头茬牧草,烘干可保存较多的营养物质获得优质的干草.根据牧草不同生育期营养成分的变化以及牧草各营养成分的瘤胃降解率,建议串叶松香草在抽茎-现蕾期刈割利用.
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