Pond conditions Organic yellow catfish require sufficient water, good water quality, convenient drainage and irrigation, quiet environment, an area of ​​1 mu -3 acres is appropriate, water depth 1.5 meters -2 meters. It is generally stocked in March-April each year, and ponds should be dredged and disinfected before stocking. After the toxicity disappears, 0.8 to 1 meter of water is added, and then organic fertilizer is applied to breed natural food organisms for feeding by stingrays.

When the fish stocks are raised and raised, the general acre stocks about 10 grams of winter fish, 2500 tails to 3000 tails, and the other with 15 centimeters to 20 centimeters of salmon seed to adjust the water quality; or stocking to breed the summer fish fingerlings 1500. Tail - 2000 tails, and another when the stingray grows to more than 7 centimeters, he raises and raises 200 toads per mu. When fish stocks are stocked, they are soaked with 3%-5% saline for 10 minutes to 15 minutes. And first put the stingray species stocking for 10 days -15 days before stocking other fish species, which is conducive to the growth of the main fish.

Feeding Management Feeding Technology: Artificially cultivated organic stingrays can be domesticated and fed using live animal feed or artificial compound feed.

Feed varieties and feed formulations. Organic stingrays are omnivorous fish. Commonly used animal feedstuffs include small junk fish, snail meat, cockroaches, cocoons, livestock and poultry viscera, and fish meal. Plant feeds include bean cakes, peanut cakes, bran, and bean dregs. If compound feed is used, the protein content in the early stage is more than 34% and the fat is 4%; in the latter stage, the protein content is 30% and the fat is 6%.

Feeding amount and food intake. The daily feed intake of organic yellow catfish is related to its body weight, water temperature, and dissolved oxygen. If the feeding amount in the production is greater than the food intake, it will not only cause feed wastage, increase the cost of aquaculture production, but also cause pollution in the aquaculture water environment; if the feed amount is lower than the food intake, the rapid growth of the cultured objects will not meet the demand for nutrients. The growth is hindered and the effective use of feed is reduced accordingly. The amount of feed each day should be flexibly controlled by the producer based on the climate, water temperature and other environmental conditions of the day.

The whole feeding process of organic yellow snapper should be divided into three stages. The first stage of feeding in May and June 4 times a day, feeding rate of 3% -5%; the second phase of July, August, September feeding 3 times, feeding rate of 2% -3% ; The third stage will be fed twice a day after October. Feeding rate will be 2%. On this basis, the amount of feed should be adjusted according to the weather and water quality conditions. In the first and third stages, it is recommended to adopt the satiety method. That is, 90% of the fish on the upper feed station will be stopped after being deported. Second Due to the hot weather and fluctuating water quality, it is recommended to feed “90% full”, that is, 80% of the fish on the feed station will stop feeding after leaving the station.

Feeding time and feeding rhythm of the cultured subjects. When feeding time is determined under artificial breeding conditions, it is necessary to consider the feeding rhythm of the original feeding, or to adopt domestication of certain time and means, so as to change the habit of feeding at night, facilitate production management, and improve feed utilization rate. Once the feeding time has been selected or after domestication has formed a regular feeding behavior, it is not appropriate to frequently change the feeding time so as not to disturb the feeding rhythm it has formed. When the general water temperature is relatively low (10°C-15°C), the feeding time should be set at noon at a higher temperature; the water temperature is gradually increased, and the frequency of daily feeding should be increased. During the entire breeding period, we should adhere to the principles of “four determinations” and “four observations” and be flexible to ensure that the organic yellow snapper eats well and grows rapidly.

Water quality management: During the entire production process, organic stingrays should always maintain fresh water, adequate dissolved oxygen, and timely measures should be taken to detect abnormalities, such as adding new water, changing water, or applying water quality improvement agents. , quick change, etc.

Day-to-day management: Insist on daily inspections of ponds, remove diseased fish and dead fish debris, and keep the water in the pond clean. Observe the fish activity. Disinfect the food field once a week. Pay attention to the change of water color, water level, and whether the inlet and outlet ports are in good condition.

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