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近年来,由于国家对于畜牧养殖业的优惠政策频频出台,一大批具有相当规模和特色的养殖示范区相继建成。我国畜牧业发展空前高涨,但随着一批又一批优良动物品种的培育及商品动物的出栏,在市场经济条件下
In recent years, due to frequent state preferential policies for livestock husbandry and aquaculture, a large number of farmed demonstration areas with considerable scale and characteristics have been completed one after another. The development of animal husbandry in our country is unprecedentedly high, but with the cultivation of batches of excellent animal breeds and slaughter of commercial animals, under the market economy conditions