First, adult fish breeding
1. Pond culture Chinese barbs? Adult fish culture ponds require a quiet environment, adequate water sources, good water quality, convenient drainage and irrigation, sand and rock quality as the bottom material, and as little silt as possible, preferably with microfluidic conditions. The area of ​​the pond is appropriated from 1 mu to 10 mu, and the water depth is about 2 meters. To set up irrigation outlets and escape prevention facilities, the pool dike should be 1.5 meters higher than the water surface. For high density cultivation, additional oxygenation equipment is also required. Fifteen days before the fish species are stocked, they will be disinfected with 75 kg of quicklime per mu to kill pests and pathogens. After 10 days, the water was poured 60 cm deep and 3 kg of urea and 2 kg of superphosphate were fertilized. The fish species can be released after 4 days to 5 days, about 500 per mu. The fish species to be cast should be robust, disease-free, and uniform in size and size. Fish species should be enough at the same time, at the same time can be equipped with a small amount of large-scale fish, oysters, oysters and other fish to regulate water quality and feeding bait, but the mullet should not be stocked too much.
In the early feeding period (less than 20 cm in body length), three times a day are fed. The time is set at 6 am to 7 am, 1 pm, and 5 pm to 6 pm in the evening. The feed for salmon is fed in the morning and at noon (protein content above 40%) ), accounting for 3% to 5% of the fish's weight, cast along the edge of the pool in the shallow water area; evening feeding floating pellet feed, accounting for 3% to 4% of fish weight. In the middle and late period (body length is longer than 20 cm), 4 times a day, the time schedule of the day is the same as that of the previous period, and then 1 time at 10:00 pm, all of them are fed with floating water pellet feed, and the amount of feed is 2% of the fish's weight. 3%. Usually feed more green feed.
In the early stage, only water was added without water, and water was changed when the water depth was 1.8 meters. The water is changed once every 10 days to 15 days, and the amount of water exchanged accounts for about 1/3 of the pool water. Chinese barbs, afraid of alarming, should always maintain a quiet farming environment.
2. Net cage culture cages are generally set at locations with fresh water, transparency of more than 50 cm, micro-fluid water all year round, small year-round fluctuations in water level, small waves and relatively stable bays or ponds. The cages are made of polyethylene net-free mesh sheets. The specifications are 2.5 meters, 2 meters and 2 meters. The two-layer meshes are 2.5 centimeters in the inner mesh and 3 centimeters in the outer mesh. The upper part of the cage is surrounded by large bamboo, fixed on the piles around the box frame with steel wire ropes, and the shelves of the cages are fixed with wood and angle iron, and the large oil barrels or foam plastics are used as floats, and the anchors and ropes are used to fix the shelves. A metal ring was installed around the pile, and it was tied to a pile. A 3.5 kilogram stone was placed on each ring to make the cage fully open up and down into a square. The cage is 1.5 meters above the water and is 0.5 meters above the water surface. The net cover is placed on the net to prevent the fish from jumping out of the box. Before stocking, fish cages should be placed in water for 5 days to 7 days in advance to allow the nets to be fully immersed to remove residual toxicity and to allow some net algae to adhere to the nets to reduce scratches after the fish species enter the box.
The time for the fish species to enter the box is at the end of March each year, and the fish species are generally stocked every other year, with 30 to 50 tails per square meter. The specifications are 80 grams to 100 grams per tail. After 7 days of stocking, tasseled feeds were mainly used to feed tassels. Afterwards, as the growth of fishes was gradually increased, they were gradually fed to artificially mixed pelleted diets containing approximately 35% crude protein. Adhering to regular feeding, the daily feeding amount accounts for 3% to 5% of the fish's body weight, and 2 or 3 shots per day. When the feeding is performed, the small fish is thrown in, and the fish is thrown after eating to prevent feed wastage.
After the fishes are put into the box, they will insist on daily inspections of the early, middle and late times. Check the feeding conditions, whether there is injury or illness, and whether the cages are damaged. Clean the cage every 10 days to 15 days, especially after the flood. Should be cleaned immediately to remove debris and net algae on the net. Keep the exchange of water inside and outside the box open. The inside of the box is rich in dissolved oxygen. Found dead fish should be removed immediately to avoid polluting the water.
Second, disease prevention
1. Saprolegnia sinensis reared in the late autumn and early spring, the water temperature below 20 °C, when the injured seed is susceptible to hydromycosis. Control methods: 1 meter deep water per acre, the whole pool (box) splash 20 kg to 25 kg of salt, the next day with 0.4 g / l "water mold net" Quanchi (box) spill, the same day the third day with 20 kg ~ 25 Kilograms of salt and then the whole pool (box) spilled, the effect is very good.
2. Bacterial Diseases During the dry season, poor water exchange and strong water color, such as the high temperature weather, the Chinese barb, it is easy to get the disease. Control method: Use 1 mg/L bleaching powder in the whole pool (box) to spill once a day for 2 days to 3 days, and combine oral administration. Add oxytetracycline 150 grams to 200 grams per 50 kg of feed, once a day, even Feed 5 days to 6 days.
1. Pond culture Chinese barbs? Adult fish culture ponds require a quiet environment, adequate water sources, good water quality, convenient drainage and irrigation, sand and rock quality as the bottom material, and as little silt as possible, preferably with microfluidic conditions. The area of ​​the pond is appropriated from 1 mu to 10 mu, and the water depth is about 2 meters. To set up irrigation outlets and escape prevention facilities, the pool dike should be 1.5 meters higher than the water surface. For high density cultivation, additional oxygenation equipment is also required. Fifteen days before the fish species are stocked, they will be disinfected with 75 kg of quicklime per mu to kill pests and pathogens. After 10 days, the water was poured 60 cm deep and 3 kg of urea and 2 kg of superphosphate were fertilized. The fish species can be released after 4 days to 5 days, about 500 per mu. The fish species to be cast should be robust, disease-free, and uniform in size and size. Fish species should be enough at the same time, at the same time can be equipped with a small amount of large-scale fish, oysters, oysters and other fish to regulate water quality and feeding bait, but the mullet should not be stocked too much.
In the early feeding period (less than 20 cm in body length), three times a day are fed. The time is set at 6 am to 7 am, 1 pm, and 5 pm to 6 pm in the evening. The feed for salmon is fed in the morning and at noon (protein content above 40%) ), accounting for 3% to 5% of the fish's weight, cast along the edge of the pool in the shallow water area; evening feeding floating pellet feed, accounting for 3% to 4% of fish weight. In the middle and late period (body length is longer than 20 cm), 4 times a day, the time schedule of the day is the same as that of the previous period, and then 1 time at 10:00 pm, all of them are fed with floating water pellet feed, and the amount of feed is 2% of the fish's weight. 3%. Usually feed more green feed.
In the early stage, only water was added without water, and water was changed when the water depth was 1.8 meters. The water is changed once every 10 days to 15 days, and the amount of water exchanged accounts for about 1/3 of the pool water. Chinese barbs, afraid of alarming, should always maintain a quiet farming environment.
2. Net cage culture cages are generally set at locations with fresh water, transparency of more than 50 cm, micro-fluid water all year round, small year-round fluctuations in water level, small waves and relatively stable bays or ponds. The cages are made of polyethylene net-free mesh sheets. The specifications are 2.5 meters, 2 meters and 2 meters. The two-layer meshes are 2.5 centimeters in the inner mesh and 3 centimeters in the outer mesh. The upper part of the cage is surrounded by large bamboo, fixed on the piles around the box frame with steel wire ropes, and the shelves of the cages are fixed with wood and angle iron, and the large oil barrels or foam plastics are used as floats, and the anchors and ropes are used to fix the shelves. A metal ring was installed around the pile, and it was tied to a pile. A 3.5 kilogram stone was placed on each ring to make the cage fully open up and down into a square. The cage is 1.5 meters above the water and is 0.5 meters above the water surface. The net cover is placed on the net to prevent the fish from jumping out of the box. Before stocking, fish cages should be placed in water for 5 days to 7 days in advance to allow the nets to be fully immersed to remove residual toxicity and to allow some net algae to adhere to the nets to reduce scratches after the fish species enter the box.
The time for the fish species to enter the box is at the end of March each year, and the fish species are generally stocked every other year, with 30 to 50 tails per square meter. The specifications are 80 grams to 100 grams per tail. After 7 days of stocking, tasseled feeds were mainly used to feed tassels. Afterwards, as the growth of fishes was gradually increased, they were gradually fed to artificially mixed pelleted diets containing approximately 35% crude protein. Adhering to regular feeding, the daily feeding amount accounts for 3% to 5% of the fish's body weight, and 2 or 3 shots per day. When the feeding is performed, the small fish is thrown in, and the fish is thrown after eating to prevent feed wastage.
After the fishes are put into the box, they will insist on daily inspections of the early, middle and late times. Check the feeding conditions, whether there is injury or illness, and whether the cages are damaged. Clean the cage every 10 days to 15 days, especially after the flood. Should be cleaned immediately to remove debris and net algae on the net. Keep the exchange of water inside and outside the box open. The inside of the box is rich in dissolved oxygen. Found dead fish should be removed immediately to avoid polluting the water.
Second, disease prevention
1. Saprolegnia sinensis reared in the late autumn and early spring, the water temperature below 20 °C, when the injured seed is susceptible to hydromycosis. Control methods: 1 meter deep water per acre, the whole pool (box) splash 20 kg to 25 kg of salt, the next day with 0.4 g / l "water mold net" Quanchi (box) spill, the same day the third day with 20 kg ~ 25 Kilograms of salt and then the whole pool (box) spilled, the effect is very good.
2. Bacterial Diseases During the dry season, poor water exchange and strong water color, such as the high temperature weather, the Chinese barb, it is easy to get the disease. Control method: Use 1 mg/L bleaching powder in the whole pool (box) to spill once a day for 2 days to 3 days, and combine oral administration. Add oxytetracycline 150 grams to 200 grams per 50 kg of feed, once a day, even Feed 5 days to 6 days.
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