在评价牧草种和栽培品种时,要考虑到家畜的生产、牧草的质量和数量。假若牧草是用作成年母牛的维持饲料,那么每一种牧草的高产就最重要,即使可消化率为50％或再高一点。但是,如果牧草是用作青年母牛或阉牛的生长饲料,或者仅在母牛产犊前后用作附加能量饲料时,那么高质量的牧草可能就要比牧草的产量更重要。北部大平原的两个研究报告,包括了主 When evaluating forage species and cultivars, take into account the production of livestock, the quality and quantity of pasture. If forage is used as a maintenance feed for adult cows, the high yield of each forage is paramount, even with a digestibility of 50% or higher. However, if pasture is used as a growing feed for young cows or steers, or only as an additional energy feed before and after the calving of the cow, then high quality pasture may be more important than pasture production. Two research reports on the Great Plains of the North, including the Lord