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First, cage design
1. Specifications of the cage: The cage raw material is made of polyethylene, the mesh usually requires 2-3 cm, the net is 1.5 cm, the mesh is 12-24 m2, and the depth is 2 m.
2. Set up cages: Frames are made of bamboo or wooden planks, cages are placed in the frame, floats are made of cylindrical foam, and sinks are made of cobblestones at the bottom of the cage. The cages can be raised and lowered as water rises and falls. The cages should be placed in waters with good water quality and high dissolved oxygen. One week before stocking, fish cages should be placed in water to keep the mesh wall adhered to the screen algae to be smooth and avoid scratching the fish. Generally, the distance between the cages should be 2-3 meters.
Second, fish breeding cages Cultured stingrays are generally introduced before and after the Spring Festival, so when the water temperature is low, the fish is not easy to be injured, fish species need to use 10 mg / kg Malachite green or 5% salt water before the next box Wash the fish body. The stocking density of fingerlings is generally 100-150 tails per square meter, and the weight of fish seed is more than 20 grams. In addition to raising stingrays, some head lice can be properly picked up.
Third, bait and feeding stingrays are omnivorous fishes, which can be fed animal feed such as small fish, shrimp, livestock and poultry processing waste, etc., and can also feed vegetable cakes, bran, soybean meal and other plant feeds. . The cage culture is best fed with artificial compound feed. Normally, it is fed twice a day, that is, every 9-10 am and 4-6 pm, and the daily feeding amount is 3%-6% of the fish body weight.
IV. Daily management Observe the fish activity and feeding conditions to adjust the amount of feeding. Periodically (usually 5-7 days) to clean the attachment around the cage to maintain the convection of the water body. Check the cage regularly for damage and prevent fish escape. Also pay attention to changes in the water level, and solve the problem in time.
Fifth, fish disease prevention cage fish culture in fish prevention and control should adhere to the prevention-based measures, often bleaching powder and copper sulfate and ferrous sulfate mixture (5:2) bags, usually replaced once a week, at the same time Antibiotics are added to the feed to ensure the healthy growth of the fish.
6. Timely harvesting and listing According to the market conditions and the growth of fish, timely listing can be launched to maximize the economic benefits. Cage cultured stingrays can generally be harvested in batches starting from the beginning of August.
Stingray cage culture technology
The stingray is a genus of the genus Boulardidae. It is commonly known as Angine or yellow thorn. It is generally 200-300 grams in size. Its delicate flesh, less thornless scale, delicious taste, rich nutrition, is well received by consumers. Favor. The market price is generally around 20 yuan per kilogram, which is a relatively high economic value of fish species. The development of cage-cultured stingrays in lakes, reservoirs, rivers, and other water bodies is not only effective in the use of water bodies, but also provides higher economic benefits. It is a breeding project worthy of promotion.