(b) Feeding feeds mainly supplemented with seawater chilled fish and freshwater fish shrimp
Feeding mainly feedstuffs, supplemented with seawater chilled fish and freshwater small fish, shrimp farming stingrays, the requirements for ponds and seeding are similar to that of feeding fresh fish and shrimp, but the density can be increased (1500 ~ 2000 tails/mu), reaching the level of intensive cultivation and increasing unit yield. However, the requirements for feeding and management are stricter and management is more meticulous. Set a feeding point of about 5 square meters under the pond. The feeding site uses a mesh net around 20 mesh. The net height is 3 cm to 5 cm above the maximum water level of the pond, and the distance from the bottom of the pond is about 50 cm. After domestication, stingrays can come in from the bottom to concentrate on food intake and reach the level of catching food. According to water quality, weather, and fish feeding conditions, observe whether there is residual bait at the feeding site, adjust the feeding amount appropriately, and adjust the proportion of the fish to adjust the water quality according to the water quality. Feeding amount gradually increased from 2% to 3% of the fish seedlings to 8% to 9%. In the hot season, the amount of bait increases, the water quality changes quickly, new water is added in time, part of the pond water is drained, the pond water is kept fresh, and the transparency of the control pond water is in the range of 20 cm to 30 cm, which is opened according to the amount of dissolved oxygen in the pool water. Aerators ensure that the dissolved oxygen in the pool water is above 3 mg/l. Lime is applied every 10 days during the rearing period. Each acre is sprayed with 15 kg to 20 kg of Quanchipia to control the pH of the pool water to create an environment conducive to the growth of the stingray. A 50 kg to 600 kg stingray can be harvested per acre. Using this farming model, you can achieve maximum benefits in a shorter period of time. (to be continued)
Feeding mainly feedstuffs, supplemented with seawater chilled fish and freshwater small fish, shrimp farming stingrays, the requirements for ponds and seeding are similar to that of feeding fresh fish and shrimp, but the density can be increased (1500 ~ 2000 tails/mu), reaching the level of intensive cultivation and increasing unit yield. However, the requirements for feeding and management are stricter and management is more meticulous. Set a feeding point of about 5 square meters under the pond. The feeding site uses a mesh net around 20 mesh. The net height is 3 cm to 5 cm above the maximum water level of the pond, and the distance from the bottom of the pond is about 50 cm. After domestication, stingrays can come in from the bottom to concentrate on food intake and reach the level of catching food. According to water quality, weather, and fish feeding conditions, observe whether there is residual bait at the feeding site, adjust the feeding amount appropriately, and adjust the proportion of the fish to adjust the water quality according to the water quality. Feeding amount gradually increased from 2% to 3% of the fish seedlings to 8% to 9%. In the hot season, the amount of bait increases, the water quality changes quickly, new water is added in time, part of the pond water is drained, the pond water is kept fresh, and the transparency of the control pond water is in the range of 20 cm to 30 cm, which is opened according to the amount of dissolved oxygen in the pool water. Aerators ensure that the dissolved oxygen in the pool water is above 3 mg/l. Lime is applied every 10 days during the rearing period. Each acre is sprayed with 15 kg to 20 kg of Quanchipia to control the pH of the pool water to create an environment conducive to the growth of the stingray. A 50 kg to 600 kg stingray can be harvested per acre. Using this farming model, you can achieve maximum benefits in a shorter period of time. (to be continued)
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