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长期以来 ,牛血被当作废物排泄到河道中 ,给生态环境造成严重影响。近几年受市场和饲料价格影响 ,河蟹养殖相对效益出现滑坡。运用加工后的牛血喂养河蟹 ,具有节本、环保、增效多重效益。1 材料与方法1.1 饲料替代物 经加工后的牛血。1.2 试验品种 中华绒螯蟹。1.3 试验
For a long time, bovine blood has been excreted into rivers as waste, which has a serious impact on the ecological environment. In recent years by the market and feed prices, the relative benefits of crab farming landslide. The use of processed cattle fed crab, with section, environmental protection, efficiency and multiple benefits. 1 Materials and methods 1.1 Feed alternatives After processing of bovine blood. 1.2 Test varieties of Chinese mitten crab. 1.3 test