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笔者就寒羊纯繁、杂交羊育肥的养殖成本与效益进行调研,通过科学计算被调查对象的养殖成本和效益,确立全舍饲下寒羊的饲养方式。
The author of Han sheep purebred, crossbred fattening breeding costs and benefits of research, scientific calculation of the cost of the survey by the object of breeding and benefits, establish the whole shed feeding the sheep.