The pellet feed for fish has the advantages of comprehensive nutrition, strong stability, not easy to break up in water, not easy to pollute water body, good palatability, easy digestion and absorption, labor-saving, material saving, and good feeding efficiency. When feeding, it is necessary to see the season, weather and water color in three aspects. High temperature fish should be fed properly in the peak growing season; in sunny days, when the dissolved oxygen in the water is high, it should be fed properly; when the water quality is fresh and the water color is normal, it should be fed properly. In addition, the feed particle size should be adjusted continuously according to the size of the fish. The small particle size of the small fish is 2mm, and the particle size of the small fish is 3mm ~ 5mm as the fish grows. According to the weight of feeding fish, the daily feeding amount is generally 3-5% of the body weight, and it should be fed 2-3 times a day to promote its digestion and absorption, improve the utilization rate of bait, reduce costs and improve the economic benefits of breeding.
How to raise fish scientifically?
1)、 Scientific feeding can enhance the resistance of fish.
1. Increase the number of baiters, expand the baiting area, avoid a large number of fish gathering in one place to eat, and prevent the fish from being injured.
2. It is necessary to adhere to "four fixations" (quality, quantity, timing and positioning) feeding, ensure feed quality, supplement nutrients such as vitamins and microelements of fish body, and improve the resistance of fish body. Feed should be divided into two or three times a day, which is not only beneficial to the growth of fish, but also to improve feed utilization.
3. The method of hanging bags and baskets around the food field is often adopted, and copper sulfate, trichlorfon, strong chlorine essence, fungicide and other disinfectants are used to prevent pathogen infection.
2)、 Regulate water quality and improve the breeding environment.
1. Add new water regularly and appropriately. Generally, add water or change water once every 7-10 days. Each time, the water change shall not exceed 25 cm, and keep the water level at 1.5-2 M. When filling new water, avoid flushing up the sediment.
2. Frequently open the aerator to promote the exchange of upper and lower water layers or water circulation. Hold the power on for 2-3 hours at noon in sunny days, and note that the power can't be turned on at noon in rainy days.
3. Every 10-15 days, the whole pond is sprinkled with quicklime at a dose of 15-25kg per mu to improve the water quality; every 10-15 days, photosynthetic bacteria, EM bacteria and other microecological agents are used to improve the microbial ecological environment of the aquaculture water. After the application of microecological agents, the use of drugs should be avoided as far as possible.
