甘肃皇城天然草场牧草营养动态变化规律初探

A PRELIMINARY STUDY ON THE CHANGING PATTERNS OF THE NUTRITIVE COMPOSTITIONS OF THE PASTURES, HUANG CHENG GRASSLAND

研究结果表明,风干牧草的干物质、有机物质季节变化不明显,含量基本保持恒定粗蛋白质、硫和粗纤维含量具有明显的月、季动态变化规律,消化率与牧草粗蛋白质和硫的含量正相关,与粗纤维的含量呈负相关。

The research results indicate that the DM& OM contents of air——dried forages have no clear change in seasons,they are always keeping constant. The constantts of CP, S and CF however,show changes.regularln in month and season. Yet the DMIV show a positive relationship with the contents of CP and S,ybut there is an inverse relationship between DMIF and CF contents of the forages.