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在传统的发塘过程中,普遍采用泼洒豆奖或蛋黄的方法作为水花下塘之后的开口料。这种方法只有很少一部分豆浆或蛋黄被鱼类摄食,大部分沉入水底。沉入水底的豆奖或蛋黄腐烂变质,败坏水质,消耗掉大量溶氧,造成水体缺氧,病菌滋生,成本也较高。在发塘初期利用轮虫作为开口料。不仅降低成本,而且适口性强、营养价值高,而且在易得性上都优于豆浆或蛋黄。在普通鱼池底泥中含有丰富的轮虫休眠卵,如果采用适宜的方法使其萌发、繁殖,就可为鱼苗提供足够的开口料。不但充分利用水体的自然生产力,而且还提高发
In the traditional process of ponds, commonly used sprinkle beans or egg yolk method as a pond after the opening material. This method only a small part of soy milk or egg yolk are fed by fish, most of them submerged. Soybean into the bottom of the prize or egg yolk rot degenerate, corrupt water quality, consume a lot of dissolved oxygen, resulting in water hypoxia, bacteria breeding, the cost is higher. Early use of rotifers in the pond as an opening material. Not only reduce the cost, but also palatability, high nutritional value, but also in the availability of better than milk or egg yolk. In ordinary fish pond sediment rich in rotifer dormant eggs, if the appropriate method of germination, breeding, fry can provide adequate openings expected. Not only make full use of the natural productivity of water bodies, but also improve the hair