Large-mouth pond pond pollution-free intensive high-yield technology
2019-06-07 16:04:29
1. Pond conditions Aquaculture areas near the breeding pond should have a good ecological environment and are not directly contaminated by industrial “three wastes†and agricultural towns and medical wastes. The source water quality is fresh and non-pollution, which is in line with the requirements of “non-polluted food freshwater aquaculture water quality†(NY5051- The standard of 2001) requires that the sediment of the pond is hard, less silt, and does not leak; the pool sturdy, and the deep holes and serious depressions and pits in the pool wall should be repaired to prevent the large oysters from fleeing or entering the hole and unable to return. This affects the survival rate. Prepare 3-5 ponds, with an area of ​​1500-5000m2 and a water depth of 1.5-2m. 15 days before stocking, the seedlings should be exposed to the dry pool and sterilized in the clear pond. Each 667 square meters of lime should be applied to 150kg of lime. 30g/m3 of bleaching powder can also be used to completely kill the enemy and pathogens. The disinfection must be strictly followed. Guidelines (NY5071-2002).
Second, scientific and rational delivery of high-quality fish species of large mouth carp species must be larger specifications, generally 10-12cm, the size is too small will seriously affect the survival rate. The fish species to be placed must have neat specifications, bright body color, robust physique, and smooth surface without injury. The parents of the fish species to be put in should be selected from the original species collected or purified from the Yangtze River, and the seedlings should be cultivated without pollution. . Put 1200-1500 tails of large-mouth bream species with a density of about 10cm per 667m2 of water, 800-1000m of 12cm species of fish, sterilize with 3% salt water for 5 minutes before stocking, and bring water slowly after proper temperature. Slowly put into aquaculture water. In order to control plankton and regulate water quality, the pool should be matched with about 100 cm of quality catfish species with 20cm specifications and 20 species of carp species, and the matching fish species should meet the criteria of harmless seedlings.
Third, feeding and management
1. Feeding bait The larvae are ferocious and carnivorous fish. Their food intake is large and their food habits are wide. Under the condition of insufficient bait, they will eat each other and seriously affect the survival rate. Ingestion is generally dominated by meat-based diets, but it can also be fed artificially with pelleted food.
1 Feeding meat-feeding bait When the big-mouth bream species are just under the pond, the large zooplankton larvae and otters in the water are no longer able to meet their feeding needs. At this time, the fish slurry should be fed immediately and the whole pool should be splashed. The method for preparing the fish paste is to cut fresh or chilled, high-quality, harmless squid into smaller pieces of fish, then mince it with a meat grinder, add water to the bucket, and mix and mix the whole pool. In the summer and hot seasons, fresh and high-quality quail bait fish can be used after being frozen. They are fed three times a day in the morning, afternoon and evening, from 9:30 to 10:30 in the morning and from 16:00 to 17:00 in the afternoon. From 20:00 to 21:00 in the evening, the bigmouth owl is highly predatory at night and should adapt to increase the amount of feeding at night. In order to ensure that the large oysters have sufficient food, the four resident fish or razorbush should be released simultaneously when stocking large oysters. Fish species, ratio of 1:30, bait fish should ensure high quality, disease-free, before the next pond to be disinfected by drugs to ensure that the bait fish is not directly or indirectly into the pathogen.
When the largemouth bass is fed more than 20cm, the fish slurry will no longer be fed. At this time, the chilled quail or the mixed fish can be cut into small pieces after viscera and fed to the well-equipped food table. It can also be purchased without pollution. Bovine liver and other animal organs such as bovine lung cut into small pieces feeding, bait fish and animal internal organs with the rapid growth of fish, can be gradually cut slightly larger. Feeding amount is 8%-10% of the fish's body weight. When it is 0.25kg, the number of feedings can be reduced to 2 times, and the feeding amount should be fed in the morning and evening. The feeding amount should be increased appropriately and the feeding time is relatively elongated. point.
2 artificial domestication and feeding full-grain food pellets Although large-mouthed meat-based bait, but in the absence of bait fish or due to lack of investment costs, etc., can be artificially domesticated to achieve the purpose of feeding full-price pellet feed. The key technical measure of artificial domestication and bait matching is the use of lures. Lures generally include fish gizzards, animal organs, minced meat, and leeches.
Artificial domestication and pellet feeding should adhere to the principle of "Four Sets". Four 2-4 square meters of feedstuffs are set in the two ponds. After the bigmouth bass is planted, the attractant is used to feed the fish. Come to eat. Feeding artificial fit pellets can also be self-made, the raw materials are: white fish meal, bean cake, vegetable cake, wheat flour, corn flour and mineral additives and special vitamins for big oysters, the crude protein content is 45.2%, and the full-price food for the species The viscous strong powder should be suitable. The fish species should be fed 3 times a day at regular intervals: 9:00-10:00 a.m.; 15:30-16:30 p.m.; 20:00-21:00 p.m. The amount is 10-15% of the fish's body weight; the adult fish is fed twice a day, 9:00-10:00 a.m., 17:00-18:00 in the evening; the daily feeding is 5%-8% of the fish's body weight. .
2. Graded Rotation Grading Grading is the key measure to keep the specifications of the same pool large and tidy, prevent two levels of differentiation, and prevent the “big†from eating “small†to increase the survival rate.
The bigmouth bass pond is cultivated for 10-15 days, and the body length is about 20cm at this time. It should be kept in separate ponds, and the larger four-masculine fishes in the pool should be pulled to the net and sieved with fish. The same size of fingerlings should be placed in the same pond. Careful operation should be done when sifting. Do not scrape the fish body. The fish should be disinfected. After 10 days or so, they must be sub-divided once. After the specification reaches 50-100g, it is no longer necessary. Divide the pool.
3, water quality regulation Pond water quality regulation is an indispensable technical link. In a pollution-free culture, maintaining a good ecological water environment is a basic requirement for aquaculture. Water quality requirements "Fat, live, tender, cool" dissolved oxygen is maintained at 5mg / L or more, pH value of 7.0-8.4, the transparency of the water to 30-35cm is appropriate, in order to achieve the purpose, the high temperature season should be changed once a week , change the amount of water to 1/3-1/4 of the pool of water, and every 10-15 days, splash lime one 20-30kg per mu is appropriate, played a role in regulating water quality and disinfection and sterilization. Anytime the unfinished residue leftovers float on the surface of the water should be picked up as much as possible. In order to ensure sufficient dissolved oxygen, an aerator should be set up in the pool to turn on oxygenation in the case of rainy days and hot weather.
4, daily management adhere to three times a day in the morning and evening tour ponds, observe the fish feeding conditions and water quality, water color changes, observe the residual bait situation, adjust the amount of feeding in time, remove the residual residue bait, check the situation of big beggars, found problems in time Deal with, and do a good job in the recording of aquaculture production.
Fourth, fish disease prevention and control of large-mouth fish pond salted fish breeding process, because of its strong resistance to disease, in the day-to-day management of the work of a full and careful circumstances, large-mouthed generally do not occur or rarely fish disease. However, we must adhere to the basic principle of “disease-free early prevention, disease early management,†and we must insist on the disinfection of fish species, aquaculture water bodies, and fishing tools, and strictly control the spread of pathogens. The use of disinfectant "chlorine dioxide" or "chlorinated" quicklime, etc., is splashed at the stage of fish breeding and the season of susceptibility, and the use of fishery drugs should conform to the "Guidelines for the Use of Non-Hazardous Food and Fishery Drugs (NY5071-2002)". Provisions.
V. The listed large-mouthed larvae grow rapidly. After being fed for 5-6 months, the average weight can reach 2-4.5 kg. To reduce the load on the fish ponds, speed up the cost playback, and increase the efficiency, it is necessary to successively start the catch-up and catch-up. . Prior to the listing of adult fish, it is necessary to stop the use of the drug in strict accordance with the withdrawal period of the "Guidelines for the Use of Non-environmental Food and Fishery Drugs (NY5071-2002)" and to stop eating for one day.
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Second, scientific and rational delivery of high-quality fish species of large mouth carp species must be larger specifications, generally 10-12cm, the size is too small will seriously affect the survival rate. The fish species to be placed must have neat specifications, bright body color, robust physique, and smooth surface without injury. The parents of the fish species to be put in should be selected from the original species collected or purified from the Yangtze River, and the seedlings should be cultivated without pollution. . Put 1200-1500 tails of large-mouth bream species with a density of about 10cm per 667m2 of water, 800-1000m of 12cm species of fish, sterilize with 3% salt water for 5 minutes before stocking, and bring water slowly after proper temperature. Slowly put into aquaculture water. In order to control plankton and regulate water quality, the pool should be matched with about 100 cm of quality catfish species with 20cm specifications and 20 species of carp species, and the matching fish species should meet the criteria of harmless seedlings.
Third, feeding and management
1. Feeding bait The larvae are ferocious and carnivorous fish. Their food intake is large and their food habits are wide. Under the condition of insufficient bait, they will eat each other and seriously affect the survival rate. Ingestion is generally dominated by meat-based diets, but it can also be fed artificially with pelleted food.
1 Feeding meat-feeding bait When the big-mouth bream species are just under the pond, the large zooplankton larvae and otters in the water are no longer able to meet their feeding needs. At this time, the fish slurry should be fed immediately and the whole pool should be splashed. The method for preparing the fish paste is to cut fresh or chilled, high-quality, harmless squid into smaller pieces of fish, then mince it with a meat grinder, add water to the bucket, and mix and mix the whole pool. In the summer and hot seasons, fresh and high-quality quail bait fish can be used after being frozen. They are fed three times a day in the morning, afternoon and evening, from 9:30 to 10:30 in the morning and from 16:00 to 17:00 in the afternoon. From 20:00 to 21:00 in the evening, the bigmouth owl is highly predatory at night and should adapt to increase the amount of feeding at night. In order to ensure that the large oysters have sufficient food, the four resident fish or razorbush should be released simultaneously when stocking large oysters. Fish species, ratio of 1:30, bait fish should ensure high quality, disease-free, before the next pond to be disinfected by drugs to ensure that the bait fish is not directly or indirectly into the pathogen.
When the largemouth bass is fed more than 20cm, the fish slurry will no longer be fed. At this time, the chilled quail or the mixed fish can be cut into small pieces after viscera and fed to the well-equipped food table. It can also be purchased without pollution. Bovine liver and other animal organs such as bovine lung cut into small pieces feeding, bait fish and animal internal organs with the rapid growth of fish, can be gradually cut slightly larger. Feeding amount is 8%-10% of the fish's body weight. When it is 0.25kg, the number of feedings can be reduced to 2 times, and the feeding amount should be fed in the morning and evening. The feeding amount should be increased appropriately and the feeding time is relatively elongated. point.
2 artificial domestication and feeding full-grain food pellets Although large-mouthed meat-based bait, but in the absence of bait fish or due to lack of investment costs, etc., can be artificially domesticated to achieve the purpose of feeding full-price pellet feed. The key technical measure of artificial domestication and bait matching is the use of lures. Lures generally include fish gizzards, animal organs, minced meat, and leeches.
Artificial domestication and pellet feeding should adhere to the principle of "Four Sets". Four 2-4 square meters of feedstuffs are set in the two ponds. After the bigmouth bass is planted, the attractant is used to feed the fish. Come to eat. Feeding artificial fit pellets can also be self-made, the raw materials are: white fish meal, bean cake, vegetable cake, wheat flour, corn flour and mineral additives and special vitamins for big oysters, the crude protein content is 45.2%, and the full-price food for the species The viscous strong powder should be suitable. The fish species should be fed 3 times a day at regular intervals: 9:00-10:00 a.m.; 15:30-16:30 p.m.; 20:00-21:00 p.m. The amount is 10-15% of the fish's body weight; the adult fish is fed twice a day, 9:00-10:00 a.m., 17:00-18:00 in the evening; the daily feeding is 5%-8% of the fish's body weight. .
2. Graded Rotation Grading Grading is the key measure to keep the specifications of the same pool large and tidy, prevent two levels of differentiation, and prevent the “big†from eating “small†to increase the survival rate.
The bigmouth bass pond is cultivated for 10-15 days, and the body length is about 20cm at this time. It should be kept in separate ponds, and the larger four-masculine fishes in the pool should be pulled to the net and sieved with fish. The same size of fingerlings should be placed in the same pond. Careful operation should be done when sifting. Do not scrape the fish body. The fish should be disinfected. After 10 days or so, they must be sub-divided once. After the specification reaches 50-100g, it is no longer necessary. Divide the pool.
3, water quality regulation Pond water quality regulation is an indispensable technical link. In a pollution-free culture, maintaining a good ecological water environment is a basic requirement for aquaculture. Water quality requirements "Fat, live, tender, cool" dissolved oxygen is maintained at 5mg / L or more, pH value of 7.0-8.4, the transparency of the water to 30-35cm is appropriate, in order to achieve the purpose, the high temperature season should be changed once a week , change the amount of water to 1/3-1/4 of the pool of water, and every 10-15 days, splash lime one 20-30kg per mu is appropriate, played a role in regulating water quality and disinfection and sterilization. Anytime the unfinished residue leftovers float on the surface of the water should be picked up as much as possible. In order to ensure sufficient dissolved oxygen, an aerator should be set up in the pool to turn on oxygenation in the case of rainy days and hot weather.
4, daily management adhere to three times a day in the morning and evening tour ponds, observe the fish feeding conditions and water quality, water color changes, observe the residual bait situation, adjust the amount of feeding in time, remove the residual residue bait, check the situation of big beggars, found problems in time Deal with, and do a good job in the recording of aquaculture production.
Fourth, fish disease prevention and control of large-mouth fish pond salted fish breeding process, because of its strong resistance to disease, in the day-to-day management of the work of a full and careful circumstances, large-mouthed generally do not occur or rarely fish disease. However, we must adhere to the basic principle of “disease-free early prevention, disease early management,†and we must insist on the disinfection of fish species, aquaculture water bodies, and fishing tools, and strictly control the spread of pathogens. The use of disinfectant "chlorine dioxide" or "chlorinated" quicklime, etc., is splashed at the stage of fish breeding and the season of susceptibility, and the use of fishery drugs should conform to the "Guidelines for the Use of Non-Hazardous Food and Fishery Drugs (NY5071-2002)". Provisions.
V. The listed large-mouthed larvae grow rapidly. After being fed for 5-6 months, the average weight can reach 2-4.5 kg. To reduce the load on the fish ponds, speed up the cost playback, and increase the efficiency, it is necessary to successively start the catch-up and catch-up. . Prior to the listing of adult fish, it is necessary to stop the use of the drug in strict accordance with the withdrawal period of the "Guidelines for the Use of Non-environmental Food and Fishery Drugs (NY5071-2002)" and to stop eating for one day.
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