The whole body of squid is a treasure. The meat has no intermuscular puncture and has a high rate of consumption. It can be used as raw fish and fried fish fillets, as well as smoked and canned foods. Its kisses, fins, liver, sputum, bone, gastrointestinal tract, and notochord are all Other cuisines, especially casseroles made from processed paddle quail eggs, are world-renowned for high-end nutritional foods; their kisses, bones, and skins can be made into gums, and leather can also be made into high-quality leather. According to reports, the anti-cancer factors contained in squid are 10-15 times that of sharks. Long-term consumption of squid has special effects on anti-cancer, anti-cancer, anti-gastric pain and hair loss. In recent years, the artificial breeding of eel has gradually emerged, and people in the aquatic industry are optimistic about their breeding prospects.
The carp is large in size, long-lived, and has a high survival rate, a rapid growth rate, a high genetic plasticity, a strong resistance to disease, and easy artificial domestication. Under artificial science feeding conditions, when the fry is raised to the end of the year, the weight can reach 0.7 to 1 kg, the second instar can reach 2 to 3 kg, and the third instar can reach 5 kg. There are many species of carp, which have been successfully tested and raised, artificially propagated, and supplied in batches, including small carp, paddlefish, austerichthys, Siberian warbler, and hybrid carp, and their commercial aquaculture includes still water and running water. the way. However, it has not been widely promoted, so the number of eel products is very limited. Now we will introduce the new technology of high-yield and high-efficiency for commercial squid as follows:
First, the rapid development of calm water
1? Pond selection: The pond area is about 1300 m2, and the water depth is 1.5-2 m. The water source is preferably reservoir, river and lake water. Water quality should be clean and free of pollution, and equipped with aerators. Ponds should be disinfected with quicklime clearing pond about 1 week before stocking. Please be careful not to use bleaching powder to disinfect the fish.
2? Seed stocking: Rapid water-saving cultivation of the general introduction of stocking more than 15 cm long seed. 500-700 stocks per acre are stocked, and at the same time they are stocked with oystercatchers and squid, with about 4,000 summer flowers. Seedlings should be soaked with 3% saline for 20 minutes before stocking.
3. Feed feeding: The feed table must be installed in the pond. According to the characteristics of carp, especially in the deepest part of the pond in the summer, the feed stand should be set at a depth of not less than 2 meters and 1 or 2 places per acre. Feeding special catfish compound feed, crude protein is greater than 35%, 3 times during the day (at 6 o'clock, 13 o'clock, 16 o'clock each time), and 1 time at 23 o'clock. The feed amount was 2.5% to 4% of the carp weight.
4. Daily management: The pond should be changed frequently so that the transparency of the water is greater than 40 cm. When the water temperature of the pond rose to 28°C, the fish stopped feeding and during this period, it was necessary to increase the supply of fresh water day and night and stop feeding. The aerator was started at noon on sunny days.
Second, the rapid development of water
1? built pool: running water raising pond area 50 to 100 meters 2, round, square and rectangular can have a variety of water supply and drainage systems. In order to save water, each pool can be built into a ladder shape with a depth of 1.5 meters and a depth of 80 to 100 centimeters. The pool roof is equipped with a steel shed, which can be installed with a shed film and a screen. The water source should be sufficient, the water quality should be clean and free from pollution, the dissolved oxygen should be high, and the water temperature should be lower. Optional reservoir bottom water, underground Yongquan water after aeration.
2. Seedlings: It is advisable to use 30 to 40 tails of squid with a length of 15 cm or more per square metre, and the specific stocking density will depend on the conditions of water exchange and other conditions, and gradually reduce the density to facilitate the growth as the time goes by. .
3? Feeding: fast-feed water to feed the special feed for squid, and preferably for the granular feed. The particle size of the bait differs depending on the size of the individual fish, and the protein content is required to be higher than 40%. The fish oil content is appropriately increased, vitamins are added, and the nutritional balance is maintained. The number of feedings is 4 to 6 times, and the rate of feeding is about 3%. Feed around the pool wall, reducing water flow when feeding.
4. Management: It is advisable to raise the water flow rate of the water in order to replace a pool of water within 1 to 1.5 hours. Pay attention to water quality and water temperature regulation to ensure high dissolved oxygen. Generally, it is necessary to pollute the pond for 2 to 3 times a week. Every time the sewage is drained, about 1/2 of the water is drained, and the side of the river is cleared. The waste in the pool is completely eliminated. In summer, the temperature is high, the shade net is placed on the shed, and the flow exchange capacity is increased. Sewage, to ensure that the water temperature below 30 °C; winter pool covered with special black film for aquatic production, to protect the pool from frost, reduce the number of sewage.
Third, carp disease prevention and treatment of carp body plate, less natural enemies, short history of artificial breeding, its epidemic, fulminant disease is rare, the existing reports are mostly due to water quality deterioration, but still should be done Good water quality control, adhere to the prevention of disease prevention work: First, before the use of cultured fish ponds into the conventional clearing pool; Second, the breeding process regularly use special disinfectants to eradicate germs; third is the regular addition of furazolidone or norfloxacin in compound feed Made of baits to prevent intestinal diseases; Fourth, during the winter, we must do everything possible to increase the temperature of the water in order to avoid the occurrence of white fish and the occurrence of mycosis. In the case of trichodiasis, oral filariasis, and tongue cup disease, potassium permanganate 2 mg/l or copper sulfate 75 mg/l can be used for prevention and treatment.
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