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根据育肥牛羊冬春容易掉膘、大通县科技局下达的《牛羊复合饲料舔砖应用试验示范科技项目计划任务书》(编号9915)的要求,对牛羊及时补饲舔砖进行冬春季的保膘与牛羊育肥,
According to the requirements of fattening cattle and sheep winter and spring fall, Datong County Science and Technology Bureau issued the “cattle and sheep compound feed lick bricks application pilot demonstration project” (No. 9915) requirements of cattle and sheep feeding supplemented lick brick in winter and spring Paul 牛 fattening with cattle and sheep,