Add freshwater breeding recruits
2019-06-16 10:03:46
From 2004 to 2005, Wuyuan Agricultural Technology Station in our county was successfully introduced from Huzhou and successfully tested. A few days ago, through expert appraisal, a simple introduction to breeding techniques is now available for reference: Red-eyed oysters are genus Amaranthidae, Yalofish subfamily, Red-eyed pheasant genus, commonly known as red-eye fish, red-eye bream, ginseng fish, and are the main high-quality economic fish in rivers. One of the classes. The meat is delicate, delicious and nutritious, and it is favored by consumers. The fish has the advantages of rapid growth, strong adaptability, miscellaneous feeding habits, low breeding cost, high selling price of the commercial fish, and body shape resembling those of the first-year grass carp, and is a popular variety for the current freshwater aquaculture.
I. Pond conditions: The aquaculture pond requires sufficient water sources, good water quality, no pollution sources nearby, good water retention performance, convenient drainage and drainage, flat bottom, and less silt, with an area of ​​1000-3000°, and a water depth of 1.2-2.0m. The pool water requires “fat, live, tender and coolâ€, and the transparency of the pool water is maintained at around 25-40cm.
Second, the pond water disinfection: should remove excess sludge pond, dry pond after winter exposure, each with a lime slurry 100-150 kg disinfected 10-15 days 667 can be cast fermented manure composting 200-300kg?? Basic fertilizer, and then filtered into water with a 60-mesh sieve. Third, the fish species are selected to maintain healthy and lively quality seed. Fish species can be soaked with 3-5% salt water for 5-10 minutes before placing. The main pond for raising fish is generally 800-1200 tails for every 667-day wintering fish, and 100-200 tails for every 667 feet for polyculture ponds.
Fourth, feeding and management
1. The feed is fed with omnivorous fishes of the red-eyed oystercatcher. Algae, organic crumbs, and dried grasses can all feed on the feed. In the main ponds, full-price pelleted feeds are used. The content of crude protein in feeds is approximately 30%, and fine green algae and soft, fresh, palatable waterweeds, ryegrass, vegetable leaves, etc. can also be used as auxiliary feed. .
The daily feed is 3-8% of the fish's body weight. In general, every afternoon. Feeding feeds should adhere to the principle of "Four Ding" feeding, but also determine the reasonable amount of feeding according to the weather, water temperature, water quality, and the fish's eating and feeding conditions. In June-July and September-October, the food intake was more vigorous and the summer was slightly slower.
2. Water quality regulation During the aquaculture production process, the aerator is opened for 1-2 hours at noon every day. At night, the aerator is opened depending on the weather conditions to prevent fish floating heads. The pH was maintained between 7-8.5, dissolved oxygen above 5 mg/L, ammonia nitrogen within 1 mg/L, and nitrite within 0.06 mg/L. During the breeding period and later period (especially in the hot season), new water should be replaced in time to keep the water quality of the pond fresh, and the transparency should be controlled within 25-40cm. 10-15 days, every 667m2 will be splashed with 10-15kg of quicklime to make the pool water slightly alkaline, so as to facilitate the growth of fish and the prevention of fish diseases. Conditional households can use EM fluids, photosynthetic bacteria, and other microbial preparations every 12-15 days depending on the pond water quality, water temperature, etc., which can effectively improve water quality.
3. Daily management During the aquaculture process, daily observation and diligent inspection of ponds must be observed, water quality changes should be observed, fish activities, feeding conditions, and whether or not there is any disease should be dealt with promptly. Frequent removal of rubbish around fish ponds, residual baits on food counters (fields), floating objects on water surfaces, etc.
Fifth, fish disease prevention and control of the eyelid life, strong adaptability, various diseases infection rate and mortality after infection is low, but prevention of fish disease should adhere to the principle of "disease-free prevention, early treatment of disease, comprehensive prevention, active treatment" principle, In addition to disinfecting the fish when the species is under the pond, it is also necessary to disinfect the fresh grass (food), food facilities, tools, etc., and to regularly use fishery medicine for the prevention of fish diseases in the summer and autumn fish disease epidemic season.
Sixth, the harvest of adult fish When the majority of individuals to reach the market specifications, should catch large stay small, timely listing.
I. Pond conditions: The aquaculture pond requires sufficient water sources, good water quality, no pollution sources nearby, good water retention performance, convenient drainage and drainage, flat bottom, and less silt, with an area of ​​1000-3000°, and a water depth of 1.2-2.0m. The pool water requires “fat, live, tender and coolâ€, and the transparency of the pool water is maintained at around 25-40cm.
Second, the pond water disinfection: should remove excess sludge pond, dry pond after winter exposure, each with a lime slurry 100-150 kg disinfected 10-15 days 667 can be cast fermented manure composting 200-300kg?? Basic fertilizer, and then filtered into water with a 60-mesh sieve. Third, the fish species are selected to maintain healthy and lively quality seed. Fish species can be soaked with 3-5% salt water for 5-10 minutes before placing. The main pond for raising fish is generally 800-1200 tails for every 667-day wintering fish, and 100-200 tails for every 667 feet for polyculture ponds.
Fourth, feeding and management
1. The feed is fed with omnivorous fishes of the red-eyed oystercatcher. Algae, organic crumbs, and dried grasses can all feed on the feed. In the main ponds, full-price pelleted feeds are used. The content of crude protein in feeds is approximately 30%, and fine green algae and soft, fresh, palatable waterweeds, ryegrass, vegetable leaves, etc. can also be used as auxiliary feed. .
The daily feed is 3-8% of the fish's body weight. In general, every afternoon. Feeding feeds should adhere to the principle of "Four Ding" feeding, but also determine the reasonable amount of feeding according to the weather, water temperature, water quality, and the fish's eating and feeding conditions. In June-July and September-October, the food intake was more vigorous and the summer was slightly slower.
2. Water quality regulation During the aquaculture production process, the aerator is opened for 1-2 hours at noon every day. At night, the aerator is opened depending on the weather conditions to prevent fish floating heads. The pH was maintained between 7-8.5, dissolved oxygen above 5 mg/L, ammonia nitrogen within 1 mg/L, and nitrite within 0.06 mg/L. During the breeding period and later period (especially in the hot season), new water should be replaced in time to keep the water quality of the pond fresh, and the transparency should be controlled within 25-40cm. 10-15 days, every 667m2 will be splashed with 10-15kg of quicklime to make the pool water slightly alkaline, so as to facilitate the growth of fish and the prevention of fish diseases. Conditional households can use EM fluids, photosynthetic bacteria, and other microbial preparations every 12-15 days depending on the pond water quality, water temperature, etc., which can effectively improve water quality.
3. Daily management During the aquaculture process, daily observation and diligent inspection of ponds must be observed, water quality changes should be observed, fish activities, feeding conditions, and whether or not there is any disease should be dealt with promptly. Frequent removal of rubbish around fish ponds, residual baits on food counters (fields), floating objects on water surfaces, etc.
Fifth, fish disease prevention and control of the eyelid life, strong adaptability, various diseases infection rate and mortality after infection is low, but prevention of fish disease should adhere to the principle of "disease-free prevention, early treatment of disease, comprehensive prevention, active treatment" principle, In addition to disinfecting the fish when the species is under the pond, it is also necessary to disinfect the fresh grass (food), food facilities, tools, etc., and to regularly use fishery medicine for the prevention of fish diseases in the summer and autumn fish disease epidemic season.
Sixth, the harvest of adult fish When the majority of individuals to reach the market specifications, should catch large stay small, timely listing.
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