The key to improving the survival rate of fry breeding

The fry in the primary pond is like the baby in the shackles, and it takes care of everyone at any time. The fry grows in the water, and it is more necessary to double your heart and do the following things.

Timely fertilization: fry cultivation is mainly based on soy milk feeding, supplemented by fertilization. The amount of soymilk spilled was more than a few times, and evenly spilled. Every day, the bait should be “three times and two full ponds” (that is, 3 times for 1 day, 2 of which are less full of splashes, and 1 is for splashing around the pond). Soymilk should be freshly ground and must not be put on hold for too long. Every day, 3 kg to 4 kg of soybeans per acre are needed. After 5 days, in addition to the pulp, additional bean dregs and bean cake paste are required. When the water in the fish pond is light and the natural food is not enough, it is timely to top-dress. General fish fry 5 days into the pool, every 2 days to 4 days topdressing 1 times to ensure that the fish pond has some natural food organisms for fish feeding.

Regular patrol pond: The number of patrol ponds should be diligent. Each time we must carefully observe the water quality to determine the number of baits and the amount of fertilization. Observe the activity and growth of the fish and find that the disease is treated and cleared in time.

Fish Disease Prevention: Lime water is splashed once every 5 days to 7 days during the cultivation period to clarify the water quality and prevent fish diseases. When the racehorse disease is onset, the rams can be used to cut off fry mad swimming routes, stop the water injection, and increase the amount of feeding and fertilization appropriately. When whitehead white beetle disease and white skin disease occur, bleaching powder or strong chlorine fines is splashed and disinfected in pool water for 2 days, and the pool is divided in time to reduce the density in the pool.

Timely pooling: fry is cultivated from 20 days to 25 days. When it grows to more than 3 cm, it must be divided into pools in time to reduce the density in the pool to promote the growth of summer flowers and improve the specification of summer flowering pool. Before the summer flower goes out of the pool, it takes 2 days to 3 days to pull the net to exercise. To stop eating for 1 day before pulling the net, the operation should be light and the speed should be slow. Http://

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