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(一)我国南北养鸭模式我国南北气候差异较大,经济发展水平、消费习惯,特别是当前制约养殖业发展的土地供应也不相同,造成鸭的养殖模式以及由此决定的生产水平和鸭舍建造方面都有较大的差异。北方为防止冬季严寒的不良影响,以避免或减少疾病发生,同时节省用于维持体温御寒的饲料消耗、提高饲料转化效率,普遍采用舍内养鸭的旱养模式;南方
(I) North-South duck feeding pattern China has a large difference in climate between North and South. The level of economic development and consumption habits, especially the supply of land that currently restricts the development of the breeding industry, are also different. As a result, the duck breeding pattern and the production level There is a big difference in construction. In the north, in order to prevent the adverse effects of cold winter in order to avoid or reduce the incidence of diseases and save the consumption of feed for keeping body temperature warm and cold, and to improve the efficiency of feed conversion,