Coup 1: A skillful feed nutrition Due to the small number of individual fry, many seedlings at the seedling stage have insufficient feeding uniformity, and nutrient requirements that are likely to cause healthy growth of fry can not keep up, and it is easy to cause “black body†phenomenon of fry. Yuehai Feed Group developed a highly efficient fermented feed based on the specific needs of the growth of sea bream fry, Yuehai Rich shrimp, adding specific antibacterial peptides, microbiota, and various trace elements required by the organism. Feed nutrition is more abundant and disease resistance is stronger. The use of Guangdong fish fry, open material mixed with shrimp rich fish feeding cod fish fry intestine, can feed, large specifications, high number! Coup two: grading screening anti-stress Classification screening can effectively ensure the uniformity of the fish body size, reduce the proportion of sub-fish listed on the fish market, and increase the level of profitability. Therefore, when the jellyfish fry are markedly thick, they are often screened in stages to achieve the above objectives. To do a good job of anti-stress work can effectively prevent frying and black body problems in the process of sub-sieving, reduce the loss of fry, and increase the number of fry. (1) Five days before the sieving, it is recommended that the fish be fed with multi-dimensional (1 bag/1 package) shrimp for daily use to strengthen the body; (2) 1 day before grading and screening; (3) Spray 306 (1 bottle/2 mus) and proper amount of glucose evenly in the mother pond at half an hour before sieving. (4) After grading and sieving, if it is passed in the morning, it will not be fed in the afternoon and it will be fed in the next morning; if it is in the afternoon, it will be reduced in the next morning. It is recommended that shrimp be fed multi-dimensionally and the body should be enhanced. In the afternoon of the next day, Guangdong 501 (1 bottle/3 mus) should be used to change the bottom (this step is to prevent the infected fish from infecting bacterial diseases, and it can also be sterilized with iodine. deal with); (5) The screening should be avoided during heavy rain days, cold wave invasion, and sun exposure. Coup 3: Stremote Balanced Water Stable Seedlings Usually, the fry treasures, opening materials, and small materials are easily dissolved in water, and nutrients easily dissipate in the water. Algae use these nutrients for rapid growth and reproduction. Therefore, the seedling color is generally thicker. Green, pH is too high, if not handled in time, it can easily lead to black body, bloated, rot or even death, which seriously affects the survival rate of fry. Therefore, the stability of water quality at the seedling stage has a decisive influence on the survival rate of fry. Excessive pH: EM Water Transfer King (1 bottle/3 mu) + brown sugar (5 kg/mu) Fertilizer: Amino Acid solution (1 barrel/3 mus)+ Lishengsu (1 bag/mu) Steady water: EM diversion of water (1 bottle / 3 acres) + ecological water treasure (1 package / 2 acres) Thin Water: Red Bacteria Po 201 (1 bottle/3 mus) Food additives are compounds or natural substances added to food for the purpose of improving the color, aroma, and taste of food, as well as for the needs of anti-corrosion and processing technology. At present, there are 23 categories of food additives, with more than 2,000 varieties, including acidity regulators, anticaking agents, defoamers, antioxidants, bleaching agents, leavening agents, coloring agents, color retention agents, enzyme preparations, and flavor enhancers, nutritional fortifiers, preservatives, Sweeteners, thickeners, spices, etc. Erythritol, Sweetener, Pigment, XOS , Carotene, fish oil Xi'an Gawen Biotechnology Co., Ltd , https://www.ahualynbios.com