Recently proteinfeeds for animals have been developed by growing yeast in a petroleum based stock.
最近已经研制出一种动物食用的蛋白质饲料,它是用石油作为基本原料加上酵母而制成的。
2
It is very important and necessary to develop resources of proteinfeeds because of shortage of fish meal and proteinfeeds in the world.
世界鱼粉供不应求,蛋白饲料日趋短缺,开发蛋白饲料资源势在必行。
3
It is a world difficult problem that the protein feed is insufficient, so developing compound proteinfeeds is one of the effective ways to solving this problem.