谷类豆类作物在平衡畜禽日食中起着特殊的作用,这些作物富含蛋白质。如果在小麦粒内含有13—14％(有时总共含10％)的蛋白质,那么在豌豆内含19％,箭舌豌豆和山黧豆内含23％,在饲用蚕豆内含24％,羽扇豆内含27％,大豆内含29％的蛋白质。研究表明,导入日粮内的豌豆籽粒每吨能节省2.5吨的精料,而1吨大豆油粕可节省精料达5吨之多。因此,到1990年多年生豆科牧草 Cereal legumes play a special role in balancing livestock and goats, these crops are rich in protein. If the wheat kernel contains 13-14% (sometimes 10% in total) of protein then it contains 19% in pea, 23% in tongue pea and shaddock, 24% in fodder broad beans, Contains 27% of beans, soy contains 29% of the protein. Research shows that pea kernels introduced into the diet save 2.5 tons of concentrate per tonne, while 1 ton of soybean meal can save as much as 5 tons of concentrate. Therefore, by 1990 perennial legumes