1. Stocking quality fish species: High-quality fish species have a fast growth rate, and have a high rate of digestion and absorption of feed. In production, we must pay attention to the selection of excellent and healthy fish. In addition, in the stocking mode, it is necessary to highlight the main fish and properly match other fish, so that feeds suitable for the nutritional needs of the main fish can be selected to increase the utilization of the feed.
2. Reasonable feeding: Feeding feed must be uniform, adequate, timed, and positioned. Feeding amount is directly related to feed utilization rate. Fish do not have stomach, and can not store feed for long time to digest and absorb. If you eat too much, the feed will not be completely digested and excreted, resulting in waste; the lack of feeding will affect the growth of fish. In production, it is advisable to ensure that more than 80% of the fish are satisfied with each feeding.
3. Ensure feed nutrient feeding: Compound feed is an important way to reduce the cost of fish feed. However, different diets and different stages of development require different nutrients, so the fish must grow faster and the feed cost is lower. The nutrients of the feed must meet the physiological needs of the fish. When formulating feed, according to the nutritional needs of the main fish, choose the appropriate formula to meet the nutritional needs of the main fish without wasting feed.
4. Grass and fish farming: Grass cultivation is an effective way to solve fish feed, reduce fish feed costs, and increase the economic benefits of fish farming. Planting green feed, as long as scientific arrangements, seasonal convergence, can always have green feed to meet the needs of fish. The high-quality grasses used for fish farming include ryegrass, sudan grass, alfalfa, bitter leeks, pennisetum, and red and white clover.
5. Fertilizer fish farming: Fertilizer fish farming is an effective method to reduce the cost of feed for fish farming. Commonly used fertilizers include urea, ammonium bicarbonate, superphosphate, calcium magnesium phosphate fertilizer, and compound fertilizers. When using it, you should master the principle of a small number of times. Apply it once every 3 days to 5 days, and apply urea from 2 kg to 3 kg or ammonium bicarbonate from 5 kg to 10 kg, or from 8 kg to 10 kg of superphosphate. Fertilizers can rapidly increase the amount of plankton in ponds, and have a better effect on earthworms and catfishes.
6. Inducing insects and breeding fishes In summer and autumn, insect traps are installed on the surface of fishing ponds to induce all kinds of insects to directly feed fish; artificially cultivated fly maggots, cockroaches, and mealworms are also feeds for fish. Feeding these feeds can greatly reduce feed costs for fish farming.
7. Maintain good water quality, good water quality, adequate dissolved oxygen, fast fish growth, high feed utilization, and reduced feed costs, and vice versa. Therefore, during the breeding season, especially in the season of fish growth, regular use of new water, lime water, microbial preparations, and aeration machines are used to regulate water quality, so that the pool water always maintains a high dissolved oxygen content. The transparency creates a good environment for the growth of fish.
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