智慧的人类为了得到温饱,进而满足口福和吸收更多的营养,不仅要享用多种粮菜植物性食品,还要享用禽畜动物性食品。随着科学技术的发展,现代人对动物性食品的质量要求越来越高;随着人口总量的不断增长,对动物性食品的需求量也越来越大。 Wisdom humans need not only to enjoy a variety of food and vegetable foods, but also to enjoy animal and animal foods in order to obtain food and clothing, and then to satisfy their taste and absorb more nutrition. With the development of science and technology, modern people have higher and higher requirements for the quality of animal foods; with the continuous increase of the total population, the demand for animal food is also increasing.