Stingray Pond Culture Technology

Yellow mullet, commonly known as squid and Huanglading, is a small, economic fish that is widely distributed in freshwater bodies such as rivers, lakes, reservoirs, and ponds. The meat is delicate and less stab, delicious and without scales, rich in nutrients, popular with consumers, is a high-quality fish that has been selling on the market in recent years, and the annual market sales price is about 30-40 yuan per kilogram.
Stingray is omnivorous fish, benthic population living, easy to feed, winter and summer without special wintering and summer measures. When the pool is raised, it can be eaten artificially and mixed with pellet feed. Due to the limited number of nesting and lower yields, stingrays are being raised from the matched breeds to the main raised breeds. The following is a description of the techniques used to raise the stingrays in ponds based on the practical experience of the farm production:

First, aquaculture ponds. Stingray adaptability, as long as sufficient water, good water quality, convenient drainage and drainage, the bottom flat, less silt, impervious, watertight ponds can be cultured, with an area of ​​3-5 acres is appropriate, water depth 1. 5 meters or so.

Ten to fifteen days prior to the release of fish species, 75-100 kg of lime or 10-15 kg of bleaching powder are dissolved into pulp after each acre, and then the whole pool is splashed to kill wild fish and pathogenic organisms in the pool. Clearance pond disinfection after 5-7 days, add about 1 meter of new water, apply 150-200 kilograms per mu of fully fermented and decomposed organic fertilizer, in order to breed natural food organisms, feeding for yellow snapper.

Second, fish stocking. In early spring, the stocking is mainly the one-year-old fish breeding and breeding in the previous year. The sizes of fish stocks that are stocked in the same pond should be the same. Generally, 2000-2,500 stingrays are reared at a weight of 15-25 grams per mu. After 15 to 20 days after the stingrays enter the pond, the polyculture can be used with polyculture specifications of 8-10 centimetres and 200 to 300 tail fish species to fully utilize the water space and food resources to facilitate water quality regulation. Taking into consideration the feeding habits and habitats of stingrays, stingray cultured water bodies are prohibited from releasing sturgeon and sturgeon species.

Third, feed feeding. The stingray is a omnivorous fish mainly carnivorous. It prefers to eat “live, eel, and soft” feed. It can wring animal foods such as small fish, shrimp, snail meat, livestock and poultry processing plant waste, etc. After being crushed, use earth flour (subsidiary powder) as a binder, stir well into pellets, and feed on the bait station, or feed artificial pellet feed. The reference formula is: fishmeal 30%, bean cake 30% , Bran 20%, Corn 10%, Soil flour (sub-powder) 16%, Meat and bone meal 1%, Mineral additive 1%, Multidimensional 1%, Fish oil 1%.

In order to facilitate the observation of the fish's feeding situation, a feed stand is set up in the pool. Feeding should be done regularly, fixed-point, qualitatively, and quantitatively. The daily feeding amount accounts for 2%-8% of the fish's body weight, and according to the water temperature, weather and fish The food situation is flexible. Usually every day from 9 to 10 o'clock in the morning and from 4 to 6 o'clock in the afternoon, they are fed one at a time. Because the yellow snapper prefers to eat under low light, it feeds 1/3 of the daily feeding amount in the morning and 2/3 in the afternoon.

Fourth, feeding and management. Stingray is the bottom fish, hi-dissolved oxygen, fresh water, pay attention to water quality regulation can promote its growth and improve feed utilization. In May-June, new water should be filled every 10-15 days. In July-September, fresh water should be filled every 7-10 days, each time adding 10-15 cm of water. If the water quality is too fat, some old water can be discharged first, and then the new water can be added. The transparency is about 35 centimeters.

During the rearing period, use 20 g/m3 of quicklime to spray once every 20-30 days. From July to September, it is disinfected once a month with bleaching powder, and each dosage is 1 g/m3 of water.