concentrate feed

例句：

1. 1. Thefarmer used to feed his cattle with concentratefeed.
   这位农民过去用浓缩饲料喂养他的牛。
2. 2. Concentrate feed is agood source of protein for livestock.
   浓缩饲料是牲畜蛋白质的良好来源。
3. 3. The animalsneed a balanced diet to maintain their healthand performance.
   动物需要均衡的饮食来维持健康和表现。