Soybean raising fry

The use of soy milk to raise the fry not only allows for rapid fattening, but also improves the constitution of the fry and has a high survival rate. The technical points are as follows: First, the production of soy milk. Before soaking, the soybeans are soaked in warm water of 25-35°C for 5-8 hours. The soaking time is longer for the water temperature, but shorter for the others. The grinding tool generally uses a mill or a refiner. When refining soybeans and water at the same time to join, generally 10 to 12 kg per kilogram of soybean water. Can also be soaked in soybean cake after refining. The soaking time of soymilk is 5-6 hours, and 10-12 kilograms per kilogram of water is used for refining. Do not add water after the milk has been grinded, otherwise it will precipitate. Second, the slurry method. In order to prolong the suspension time of soy milk particles in water and increase the utilization rate, generally the slurry is poured 3 to 5 times a day, and the slurry is sprinkled finely and evenly. It is best to pile some large green grass on the corners of the fry pool, and then sprinkle soy milk around the grass so that young fry can also eat it. Grass and herring like to concentrate on activities in the shallow water near the pool, so the grass and bluefish seedling ponds should be more splashed. Third, the splash time. Slurry time is generally from 8 am to 5 pm. Feeding too early, the water temperature is low, dissolved oxygen is low, and the fry are eaten less. Especially when the fish floats, the splashing slurry will increase the floating head. Feeding too late, before the dark can not finish, the decomposition of milk in the water is also likely to cause fish pond oxygen deficiency. If the weather is hot and there are thunderstorms, be sure to feed less or not. Fourth, the number of pulp. During the seedling period, an average of 3 to 4 kilograms of soybeans are fed into the slurry per acre per day. After one week, the slurry is increased to 5 to 6 kilograms, and the dosage is flexibly adjusted according to the water conditions. The color of water should be live, fat, tender and cool. Generally cultivating 10,000 species of fish requires 7-8 kg of soybeans. In addition, rearing grass carp or blue-fish fry, when the fishes reach 10 mm in 10 days after entering the pool, in addition to pouring soy milk, it is better to use thicker bean paste, bean cake paste, etc. stacked in the shallow water around the pond for them. Feeding. When grass carp seedlings grow to 25 mm or more, feed such as duckweed can also be fed.

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