First, the fish species choose
Fish species are the primary material basis for fish farming and one of the important conditions for obtaining high yield and high efficiency. The quality of the fish species is a key factor in determining the growth rate and affecting the feed coefficient. High quality fish species have the advantages of high digestion and absorption rate of feed, low feed coefficient and fast growth rate. Therefore, it is necessary to choose a fish species that is excellent in hereditary traits, strong in constitution, disease-free and harmless, and neatly sized.
Second, stocking mode
In the stocking mode, the main fish should be highlighted, and other fish should be properly matched, and the stocking specifications of the same species of fish should be consistent. Fish species stocked in the same pond should be free from conflicts in feeding habits, so as not to cause a decline in feed utilization.
Third, feeding management
Choose to feed the brand compound feed. In the general fingerling stage, the daily feeding amount is 4%-6% of the weight of the eaten fish, and the adult fish stage is 1.5%-3%. The specific feeding amount should be controlled flexibly according to the weather, water quality and feeding conditions of the fish. The weather is fine, the water quality is good, the fish is ingested vigorously, and it can be fed more appropriately. Otherwise, it is fed less or not.
Fourth, water quality management
Fish can't live without water, and water is the basic condition for fish to survive. Good water quality can promote healthy fish growth, reduce fish disease and improve feed utilization. Therefore, in the breeding process, especially in the high season of fish growth, we must keep the water, live, tender and cool. Mainly to do the following four points: First, rational fertilization, to maintain the water and fertilizer. The second is to change the water at the right time to keep the water fresh. The third is to use lime to adjust the pH. The fourth is to open the aerator in a timely manner to keep the pool water dissolved. When the aeration equipment cannot be used due to failure, emergency measures such as throwing granular oxygen may be used to increase the dissolved oxygen in the pool water.
V. Fish disease prevention
Once the fish disease is caused in the breeding process, it will affect the feeding of the fish. Even if the sick fish feeds, the digestion and absorption rate of the feed is low, resulting in great waste of the feed. Therefore, in the breeding process, we must pay attention to fish disease prevention work. The main preventive measures are: first, excavating excessive silt, thoroughly clearing the pond and disinfecting, killing various pathogens and wild fish; second, purchasing high-quality fish stocking, before the stocking of the fish, it is necessary to carry out disinfection treatment. Injury and diseased fish are planted in the pool; thirdly, new water is usually added in time, and quicklime and disinfectant are regularly sprayed for water disinfection to regulate water quality; fourth, regular feeding of drug bait is added to increase immunity and reduce the occurrence of fish disease.
Sixth, the round of catching the wheel to put
Adult fish are caught. The law of fish growth indicates that the larger the individual size, the slower the relative growth rate, and the higher the feed coefficient. Therefore, in aquaculture production, adult fish should be arrested and sold at the right time, and the feed coefficient should be controlled to a lower range to improve the economic benefits of aquaculture.
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