摘要： 采用酶分解法分析测定禾本科2个草种8个品种不同刈割时期的细胞组成成分含量，通过公式推算出干物质消化率和可消化养分总量，评价牧草品质。结果表明，意大利黑麦草各品种间可消化性无显著差异，但高Mg的Magnet干物质消化率显著高于Tachiwase。高羊茅的高Mg品种Himag可消化性显著高于其他3个品种，而其他3个品种之间无显著差异。2个草种在10月份的可消化性高于其他刈割时期，意大利黑麦草7月的可消化性最低，高羊茅9月的可消化性最低。

关键词: 牧草, 酶, 可消化性, 品质

Abstract: The cell compositions of 2 forage species and 8 cultivars at different harvest time were measured by enzyme catabolization method,the results showed that there were no significant difference of digestibility among the tested cultivars of Lolium multiflorum L.but there was a significant difference of digestibility between the cultivar Magnet with highmg and the cultivar Tachiwase.There was also a significant difference of digestibility between the cultivar Himag of Festuca arundinacea Schreb.With highmg and the other 3 given cultivars.There was no significant difference of digestibility among the 3 cultivars.There was a highest digestibility for the two forage species harvesting in October.There was a lowest digestibility for Lolium multiflorum harvesting in July,however for Festuca arundinacea harvesting in September.

Key words: Forage, Enzyme, Digestibility, Quality

中图分类号: 

• S543