Squid is a member of the order Carassius, common carp subfamily, and widely salty fish. China's coastal areas are distributed and rich in resources. Carp has the characteristics of rapid growth, wide adaptability, strong disease resistance, and delicious meat. Deep love people welcome. In order to explore high-yielding aquaculture technology and increase economic efficiency, we have conducted high-yield aquaculture trials at the dried-fish trout farm of the Zitiao River in the past three years. From 1995 to 1997, the average yield per mu was more than 1,000 kg for three consecutive years, and individual specifications were 500-1000 g. 8,000 yuan. The breeding techniques are introduced as follows:
First, the construction of the ground pond: Choose a place where the water is abundant, the water quality is fresh and pollution-free. Each pond is 5-8 acres, with a rectangular shape, and the north-south direction is better. The bottom of the pool is required to be flat, sandy mud bottom, and the pool shore is firm with a depth of 2 meters. At the end, he has to put in the drainage and drainage pipes. At the same time equipped with 1 to 2 1.5KW aerators, farms need to have standby units. When dredging, the dredging and disinfection of the ponds should be well done. They can be disinfected with 50 kg of quick lime or 5 to 10 kg of bleaching dry pool per acre in the week before release. Before laying the seedlings, basic feeds for cultivating the pool water should be applied to make the pool water green or brownish.
Second, seed cultivation: Seedlings (1.5 to 2 cm in length) harvested from the sea area should be desalinated to 4-7% salinity and then put into temporary holding ponds (1% salinity). The stocking species should use natural resources from the northern sea area. Seedlings are the best. Because of different physicochemical factors, seedlings grow faster and individuals are larger, which can shorten the breeding cycle and increase economic benefits. The stocking density in the holding pool is controlled at 1 to 20,000 acre, and the pond is often flushed with oxygen. On the second day of the next day, fresh feeds such as zooplankton and red worms were started to be fed. The fish slurry, buoyant particles and bait were slowly mixed and fed, and gradually acclimated to feed the crushed fish larvae and buoyant pellet feed. . The daily feeding amount was 15% of the fish's body weight and was fed 3 times. During the holding period, it is disinfected once a week with 0.3ppm strong chlorine or 15ppm formalin. Three days before the start of the feeding, 0.5g of furazolidone, 3 grams of oxytetracycline, and 1 gram of vitamin C are taken per 50kg of fish. Feeding once a day, even for 3 days. After more than 20 days of feeding, the fish grows to 4-6 cm in size and can be reared in large ponds.
Third, feeding and management: After the seedlings are sifted, they are bred by the size of the pool. The stocking density is generally 2500-3500 tails/mu. Water depth 1.5 meters or more, to maintain the appropriate water in the pool, with a transparency of 30 cm, the water was oil green is appropriate. Feeding twice a day, the main feed is chopped fish gizzards and buoyant pellet feeds. Vitamins B and C are added to the feed, and the daily feed is 6% of the fish's body weight. Every month, we also need to feed soil mold, erythromycin, vitamins and drugs for 2 times, each time for 3 days. At the same time, the whole pool of ponds was regularly disinfected with 0.4 ppm strong chlorine or 20 ppm formalin. Drug control should be used with caution such as trichlorfon and mercuric nitrate. Do a good job of patrol pond management every day, turn on oxygen at night or when the weather is hot and low, and find that the pool water is bad to drain water in time to keep the pool water fresh.
Fourth, the disease prevention and control: carp strong disease resistance, natural conditions are not easy to get sick. However, due to the great changes in the living environment and space of artificial high-density culture, it is very easy to cause diseases. Disease prevention must be strengthened. Drugs should be regularly disinfected on the culture ponds and food tables, and diseases should be treated as soon as possible. Common fish diseases include:
1, enteritis disease: diseased fish abdomen enlargement, anal swelling, squeezing the abdomen with pale yellow mucus outflow. It is mainly caused by feeding fresh and deteriorated feed. Treatment can be mixed with bait fed oxytetracycline, 10 grams per 50 kilograms of fish medication, halved the next day, mixed bait feeding for 6 days, can also be used 2 grams norfloxacin feeding.
2, rotten fleas: sick fish dark body color, roaming the water out of the group, unresponsive to the outside world. Open the lid, the silk is pale, and the small pieces rot. The cause of the disease is that the water quality becomes turbid after heavy rain, which makes it easy to infect the disease. In particular, after cages have been bred in heavy rain, the upstream sediment flow hits the fish body. The carp is very susceptible to infection and the disease is very costly. Erythromycin can be used for treatment. 0.5 grams of medicine is used for every 50 kilograms of fish. Continuous bait is fed for 6 days. At the same time, 0.4 ppm of strong chlorine is used for sprinkling the pond or cage in the whole pool for 3 consecutive days. The treatment effect is obvious. .
3. Hemorrhagic disease: The pectoral fins and dorsal fins of the diseased fish are red and swollen and congested, and the diseased fish are slow to move and their feeding is decreased. The disease is a viral infection that is highly contagious. The treatment can use viral spirits, antibiotics mixed feeding, 0.5 g per 50 kg of fish with virus Ling, 1 g of norfloxacin, mixed bait, feeding for 6 days. At the same time, the pond was sputtered with 0.4ppm strong Chloride Quanchipa once a day for 3 consecutive days.
4, water mold disease; this disease occurs in the winter and spring season, the disease fish body surface attached to the gray cotton-like mycelium attached to the wound, the fish is weak, slowly died. The infection spreads quickly after infection. Treatment can use 0.1ppm malachite green Quanchiposa 2 to 3 days. At the same time, fry transportation and net-pull operations should also be carefully handled to avoid fish injuries.
5. Parasitic diseases: White small bright spots appear on the surface of diseased fish and fins, and mucus increases in parasites. Diseased fish do not ingest food. Their behavior is very different. They often swim around the pond. Common parasites are small melon insects, worms, worms and other types. Treatment can be carried out with 20 ppm formalin Quanchiposa for 2 days or with 0.1 ppm Malachite Green Quanchip for 2 days. Use drugs such as trichlorfon and organic phosphorus with caution in the treatment, otherwise it will cause salmon poisoning.
V. Harvest: General breeding to the end of the year can be used for commercial fish fishing market. Canned fish can be harvested at one time, and can also be brought to market in batches according to changes in market demand. The latter should pay attention to the catch of the squid after the net is no longer put back into the pond, will be injured due to pull the net and return to the pool soon after death.
First, the construction of the ground pond: Choose a place where the water is abundant, the water quality is fresh and pollution-free. Each pond is 5-8 acres, with a rectangular shape, and the north-south direction is better. The bottom of the pool is required to be flat, sandy mud bottom, and the pool shore is firm with a depth of 2 meters. At the end, he has to put in the drainage and drainage pipes. At the same time equipped with 1 to 2 1.5KW aerators, farms need to have standby units. When dredging, the dredging and disinfection of the ponds should be well done. They can be disinfected with 50 kg of quick lime or 5 to 10 kg of bleaching dry pool per acre in the week before release. Before laying the seedlings, basic feeds for cultivating the pool water should be applied to make the pool water green or brownish.
Second, seed cultivation: Seedlings (1.5 to 2 cm in length) harvested from the sea area should be desalinated to 4-7% salinity and then put into temporary holding ponds (1% salinity). The stocking species should use natural resources from the northern sea area. Seedlings are the best. Because of different physicochemical factors, seedlings grow faster and individuals are larger, which can shorten the breeding cycle and increase economic benefits. The stocking density in the holding pool is controlled at 1 to 20,000 acre, and the pond is often flushed with oxygen. On the second day of the next day, fresh feeds such as zooplankton and red worms were started to be fed. The fish slurry, buoyant particles and bait were slowly mixed and fed, and gradually acclimated to feed the crushed fish larvae and buoyant pellet feed. . The daily feeding amount was 15% of the fish's body weight and was fed 3 times. During the holding period, it is disinfected once a week with 0.3ppm strong chlorine or 15ppm formalin. Three days before the start of the feeding, 0.5g of furazolidone, 3 grams of oxytetracycline, and 1 gram of vitamin C are taken per 50kg of fish. Feeding once a day, even for 3 days. After more than 20 days of feeding, the fish grows to 4-6 cm in size and can be reared in large ponds.
Third, feeding and management: After the seedlings are sifted, they are bred by the size of the pool. The stocking density is generally 2500-3500 tails/mu. Water depth 1.5 meters or more, to maintain the appropriate water in the pool, with a transparency of 30 cm, the water was oil green is appropriate. Feeding twice a day, the main feed is chopped fish gizzards and buoyant pellet feeds. Vitamins B and C are added to the feed, and the daily feed is 6% of the fish's body weight. Every month, we also need to feed soil mold, erythromycin, vitamins and drugs for 2 times, each time for 3 days. At the same time, the whole pool of ponds was regularly disinfected with 0.4 ppm strong chlorine or 20 ppm formalin. Drug control should be used with caution such as trichlorfon and mercuric nitrate. Do a good job of patrol pond management every day, turn on oxygen at night or when the weather is hot and low, and find that the pool water is bad to drain water in time to keep the pool water fresh.
Fourth, the disease prevention and control: carp strong disease resistance, natural conditions are not easy to get sick. However, due to the great changes in the living environment and space of artificial high-density culture, it is very easy to cause diseases. Disease prevention must be strengthened. Drugs should be regularly disinfected on the culture ponds and food tables, and diseases should be treated as soon as possible. Common fish diseases include:
1, enteritis disease: diseased fish abdomen enlargement, anal swelling, squeezing the abdomen with pale yellow mucus outflow. It is mainly caused by feeding fresh and deteriorated feed. Treatment can be mixed with bait fed oxytetracycline, 10 grams per 50 kilograms of fish medication, halved the next day, mixed bait feeding for 6 days, can also be used 2 grams norfloxacin feeding.
2, rotten fleas: sick fish dark body color, roaming the water out of the group, unresponsive to the outside world. Open the lid, the silk is pale, and the small pieces rot. The cause of the disease is that the water quality becomes turbid after heavy rain, which makes it easy to infect the disease. In particular, after cages have been bred in heavy rain, the upstream sediment flow hits the fish body. The carp is very susceptible to infection and the disease is very costly. Erythromycin can be used for treatment. 0.5 grams of medicine is used for every 50 kilograms of fish. Continuous bait is fed for 6 days. At the same time, 0.4 ppm of strong chlorine is used for sprinkling the pond or cage in the whole pool for 3 consecutive days. The treatment effect is obvious. .
3. Hemorrhagic disease: The pectoral fins and dorsal fins of the diseased fish are red and swollen and congested, and the diseased fish are slow to move and their feeding is decreased. The disease is a viral infection that is highly contagious. The treatment can use viral spirits, antibiotics mixed feeding, 0.5 g per 50 kg of fish with virus Ling, 1 g of norfloxacin, mixed bait, feeding for 6 days. At the same time, the pond was sputtered with 0.4ppm strong Chloride Quanchipa once a day for 3 consecutive days.
4, water mold disease; this disease occurs in the winter and spring season, the disease fish body surface attached to the gray cotton-like mycelium attached to the wound, the fish is weak, slowly died. The infection spreads quickly after infection. Treatment can use 0.1ppm malachite green Quanchiposa 2 to 3 days. At the same time, fry transportation and net-pull operations should also be carefully handled to avoid fish injuries.
5. Parasitic diseases: White small bright spots appear on the surface of diseased fish and fins, and mucus increases in parasites. Diseased fish do not ingest food. Their behavior is very different. They often swim around the pond. Common parasites are small melon insects, worms, worms and other types. Treatment can be carried out with 20 ppm formalin Quanchiposa for 2 days or with 0.1 ppm Malachite Green Quanchip for 2 days. Use drugs such as trichlorfon and organic phosphorus with caution in the treatment, otherwise it will cause salmon poisoning.
V. Harvest: General breeding to the end of the year can be used for commercial fish fishing market. Canned fish can be harvested at one time, and can also be brought to market in batches according to changes in market demand. The latter should pay attention to the catch of the squid after the net is no longer put back into the pond, will be injured due to pull the net and return to the pool soon after death.
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