Feeding management Feeding is an important part of aquaculture management. The variety, quality, amount of feed, number of feedings, and feeding time all affect the life and growth of large yellow croaker. According to our years of breeding experience, the pond culture of large yellow croaker should be done first and then thick, specifically: 1. Early: To invest in concentrate feed. Because the wintering and transportation of the fish species makes them weak, they must choose high-quality feed, such as fresh green and yellow sturgeon, in order to make the fish return to constitution as soon as possible. In the early stage, due to water temperature below 28°C, it is more suitable for the growth of large yellow croaker. It is necessary to feed enough feed to make it grow rapidly. This will lay the foundation for the large yellow croaker to reach the commodity specifications in the year. 2. Mid-term: Control the amount of feeding. Because mid-breeding coincides with the high temperature period from July 10 to August 31. Although the fish are looking for food, if the fish eats too much, they can easily cause diseases such as enteritis and excessive feeding will cause pond water quality. deterioration. 3. Late: Put enough feed. The quality of the feed in the later period can be appropriately reduced, and some fresh fish can be thrown. Due to the large number of fish in the pond after September, and all of them entering the peak of growth and foraging, they competed with the large yellow croaker. If the fodder concentrates, it will increase the breeding cost. If the amount of bait is insufficient, it will affect the growth of large yellow croaker. 4. Types of Feed The feeds for large yellow croaker are generally capable of three types of feed. Biological feed, fresh feed and artificial feed. However, in adult fish farming in ponds, it is difficult to meet the growth requirements of large yellow croaker. Fresh feed is currently dominated by blue and yellow snapper. However, large yellow croaker uses a single green and yellow snapper to make the quality of large yellow croaker landing. It is manifested in large fish belly, pale color, high fat content, poor taste, etc., and because The use of large quantities of green and yellow squid will cause the prices of green and yellow squid to rise significantly, raising the cost of breeding and lowering the benefits. Due to the long history of artificial ration feeds for large yellow croaker breeding, the nutrient requirements for the fish have not yet been fully understood, and companies are not yet able to produce full-scale mixed feed for large yellow croakers. According to our practical experiment, the total growth of large yellow croaker is obviously lower than that of fresh feed. At the same time, the prices of high-protein, high-nutritive compound feeds produced by various companies are too high, making it difficult for farmers to receive them. In order to deal with these problems, we used the method of dry-fresh mix of feed in the cultivation, and disposed of the above problems better. After adopting the method of fresh and dry feed, the fresh feeds used do not necessarily need to be green and yellow catfish, and ordinary fresh fish can be used, which is beneficial to the cost of landing. After using the dry-fresh mix method for feed, it can use the dry feed to add sugar, plant protein, inorganic salt, minerals, vitamins, trace elements, nutrients, etc. necessary for the growth of large yellow croaker, which will help balance the nutrition structure of the feed. Strengthen the fish's physique and improve resistance to disease. The results we have used show that the use of fresh and dried fodder not only reduces the cost, but also significantly improves the fish's body shape, body color, taste, etc., even when it is used in cage culture. The survival rate of aquaculture has obviously improved. 5. Feeding times and time: Daily feeding is generally twice. Separation is given before and after sunrise and before and after sunset. It is best to choose the feeding point near the drain gate in order to discharge the sewage. 6. Feeding amount: According to the different stages of the growth of large yellow croaker, the theoretical feeding amount is 10% in the previous period, 8% in the middle period, and 5% in the later period. However, when we actually use it, we feed the bait based on the previous period and control the medium term feeding. Feeding guidelines, separation by 10%, 6%, 7% feeding. The amount of bait also needs to be adjusted according to the innovation of the climate, especially in the later period when the cold air or the northwest wind is less than 5th level, it will be less or not bait. 7. If fish breeding is to be carried out, initial consideration is given to small larvae of large yellow croakers and feeds that require higher nutritional value. Black seedlings can be used to feed the grain size of 0-2mm, supplemented by artificial Illumination utilizes the phototaxis characteristics of food organisms to guide biofeeds for the consumption of large yellow croakers. As with adult fish farming, feeding should be controlled in the medium term and bait should be added later. 8. Feeding observation: Pond culture of large yellow croaker is not easy to see when feeding time, when feeding, large yellow croaker will appear in a fixed location, so take advantage of this opportunity to carefully observe the large yellow croaker: 1) Observe the size and growth status of the fish; (2) Observe the movement status of the fish with or without diseased seedlings; (3) Observe the amount of the miscellaneous fish, etc. According to the observation results, the variety, structure, and feeding amount of the feed should be timely adjusted to prevent and treat the possible diseases. Second water quality control Pond culture of large yellow croaker, the water quality is prone to change, especially in the high temperature period, the pond may occur in some areas "red tide" phenomenon. Therefore, the conditional pond should insist on changing the water every day, and the high temperature period can be considered twice a day. Change the water during the high temperature period as much as possible between 6 pm to 10 am the next day. Changing the water on the one hand can drop the water temperature, on the other hand, it can improve dissolved oxygen. Every 15 days, the water is poured with calcined water to improve the water quality and sediment quality. Three patrol ponds Adhere to the morning, the middle, and evening patrols, especially when high temperatures and small tides are changing the water. Special attention should be paid to the work of patrolling the ponds at night and in the early hours, and problems must be solved in a timely manner. Four against enemy The natural enemies of fish farming—birds have the greatest damage in the middle and later stages of large yellow croaker’s rearing, so you should try your best to expel the birds from the ponds, but you must not use shocking methods such as firecrackers. This would make the yellow croaker frightened. Jumping is not conducive to its growth. 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