Winter fish increase efficiency

According to tests conducted by aquatic scientists and technicians, when the temperature of water in winter is above 5°C, the four major fish still feed and gain weight. The grass carp was supplemented with feed during the winter period. The fish body was full and the growth rate was 12% to 14%. Eel and squid are bred in the winter and are more profitable. For example, in aquaculture farms, the main breeding of four major fish and a reasonable combination of good quality, adhere to the winter to cast organic fertilizer and feed the appropriate amount of feed (peanut bran, corn flour, bran, etc.), adhere to perennial feeding, extend the growth period of fish The fish species that weighed 150 grams at the end of wintering season will reach the market requirement by the end of May of the next year. Grab the listing in the off-season, the benefit is 2-3 times higher than the same type of water.

Due to the low water temperature in winter, the activity of fish digestive enzymes is relatively weak, so the requirements for feed quality are relatively high. Generally, it is better to feed powdered peanut bran, bean cake, or feedstuffs, and the protein requirement is 28%-30%. Feeding amount depends on the water temperature, feeding 2 to 3 days, and feeding amount accounts for 1% to 2% of the total weight of the fish. When the water temperature rises continuously on sunny days, the fish activity increases, and the feeding amount should be increased appropriately. . The feed can be concentrated into the middle or depth of the fish pond. The feeding rate is based on the pond size and fish density. At the same time, the amount of organic fertilizer that has been fermented should be increased by 200-300 kg/mu, once a day for 10 days to maintain the optimum water quality for the fish, and provide sufficient food organisms and photosynthesis for fish, so that the water body can maintain high solubility. Oxygen, to promote fish growth, increase production and income.

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