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1.激素促长法:美国科学家从鱼体中提取生长激素,输入另一鱼体,可使其产生比原来多一倍的生长激素,增重率提高50％以上。 2.咸水养鱼法:新加坡国立大学采取盐度为30％的咸水养殖鲤鱼鱼苗,提高其成活率、生长率和繁殖能力。在饲料中添加0.1ppm甲状腺素,并加工成微胶囊饲料投喂,可进一步增加其摄食量,也可加快其生长速度。 3.变性增重法:印度渔业专家利用化学药物和通过饲料结构的改变,使雌鱼变成雄
1. Hormone promotion law: US scientists extract growth hormone from fish, enter another fish body can make it produce twice as much than the original growth hormone, weight gain rate increased by 50%. 2. Saltwater fish farming: The National University of Singapore adopts a saltwater fish culture of 30% salinity to raise its survival rate, growth rate and reproductive capacity. Add 0.1ppm of thyroxine in the feed, and processed into microcapsule feed, can further increase their food intake, but also can speed up its growth rate. 3. Denomination and weight gain method: Indian fishery experts make use of chemical drugs and feed structure changes, so that the female becomes male