Trigonella falciparum seedling cultivation and cage development techniques
2018-06-16 09:00:29
First, the larvae breed larvae hatching film must be after 3 days to 5 days of postembryonic development to the next pool cultivation (preferably egg yolk feeding), the pond before the pond disinfection, cultivating water quality, with a triangle 鲂 "fish flower" Test the water, observe the disappearance of pool toxicity, and then put the fry. The water quality is refreshing and the transparency is more than 40cm. It is appropriate to use "lean" water. The stocking density of “fish flower†is about 100,000 per acre. Remember that when the fishes are under the pond, they should not be too dense and should be operated with a lot of water. After the lower pool, feed 2 to 3 times a day soaked peanut bran and other refined feed 1.5 kg / kg seedlings, and then gradually increase with the growth of fish, while the appropriate amount of organic fertilizer sprinkling, training natural food.
After 30 days to 40 days of pond cultivation, the fry can grow to 5 cm to 6 cm. At this time, the first net stretching exercise can be performed. The density can be 20,000/mu to 30,000/mu. Continue to cultivate for 30 days to 45 days, fry up to 8 cm, at this time for the second time sparse, after the density of sparse density of 10,000 / acre, the second year of spring fry up to 10 cm to 15 cm in length . After the first net exercise, exercise the fish once every 20 days and observe the growth of the fish. During this period, as the fry gradually grows, the feed amount of the bait is increased, and the water quality becomes fat. Therefore, the water quality should be changed depending on whether the water is fat or thin, or the fry activity is changed regularly or from time to time to keep the water fresh. The feeding of bait is similar to the cultivation of fry.
Second, develop cages
1. Selection of Water Areas Select deep-water reservoirs near villages and houses to set up fishing rafts. One can be easy to manage, and the other is to avoid a dry period cage. Specifically, we should choose the waters that are sunny in Yangyang and the farmland in the bottom of the reservoir or flat and open mountains. This kind of water quality is rich in water quality and natural food. The selection of water sources for pollution sources such as fertilizer plants, pesticide plants and paper mills in the upstream and surrounding areas should be avoided.
2. The cage net cages are made of polyethylene knot nets and their specifications are hexahedral closed cages with lids. The box is 4 meters long, 3 meters wide, 3 meters deep, and 3 cm mesh. Its structure consists of foam and pine planks built into a bridge raft. In general, a fishing boat is installed with 20 to 50 cages.
3. Installation of cages The four fish ropes on the cage are ligated on the four inner corners of the pine wood frame, and the polyethylene cage is used to fasten the perimeter of the cage on the edge of the frame. Two to three kilograms of pebbles or sandbags are hung on the four corners of the cage to allow the cages to fully develop in the water. Net cages should be installed in the water 7 days before the fish species are put into the box, so that the nets will become smooth after epiphytic algae, so as to avoid abrasion damage to the fish epidermis and scales. At the same time, a 40-mesh sieve is used to make a square feed table with a height of 0.2 meters and a height of 0.2 meters. It is hung in a corner of the cage, which is based on the lining of the bottom of the box.
4. Fish Stocking In order to increase the survival rate and breeding efficiency of fingerlings, it is generally advisable to produce large-sized fingerlings with a tail weight of 50 grams or more and stocking about 100 tails per square meter. Starting from the 10th day before the fish is out of the pond, when feeding the feed, Vc1g per kilogram of feed can improve the immune function and anti-stress ability of the fish. Fish should be trained twice or three times before leaving the pond. The day before the fish species are laid, they should be raised in fish cages for 24 hours. This will reduce the loss of fish species in the transport process and improve the efficiency of the fish species. The survival rate.
5. Feed feeding The whole breeding process uses special pellets. The pellets are mainly made of fish meal, cakes, and bran. The small hard pellet feed machine was used to make small fish (particle size 1 mm to 1.5 mm) and adult fish (particle size 2.5 mm to 3.5 mm) with different particle sizes. The content of animal protein in the pellets can reach about 26%. At the initial stage of breeding, small fish feed is used. The daily feed amount is 5% to 7% of the fish's body weight. In the middle and later stages of culture, the adult fish feed is used. The daily feed amount is 3% to 5% of the fish's body weight and it is fed 3 times daily. . In practice, it should also be flexibly adjusted according to weather, water temperature, and food intake. Generally, it is advisable to eat about 1 hour after each feeding.
6. Daily management Generally wash the cage once every 7 days to 10 days. Check and clean the feed table every morning. Determine the amount of feed on the day according to the leftover material. In addition, check whether the cages are broken or slippery every day. If any, repair them at any time to prevent fish escape.
Third, fish disease prevention triangle cage cage breeding density, fish disease prevention and control should be strengthened. Around the cage, quicklime or 110-6 chlorine dioxide is poured on the water every second month, once a day for 2 days to 3 days. In addition, woven bags, each bag containing 100 grams to 150 grams of bleach or copper sulphate (alternate use), hung above the feed table, each bag hanging 1 bag, after the drug solution is added to prevent fish disease. In the event of erythroderma disease, each diseased cage can use chlorine dioxide 4g to 5g watered, once a day, for 3 consecutive days, and add 1g to 1.5g of ciprofloxacin per kilogram of feed. Feed for 3 days. If water poisoning occurs, sick fish can be soaked with 0.4% baking soda and salt solution for 20 minutes to 30 minutes. If rotten fleas occur, each of the onset cages can be splashed with quick lime 800g to 1000g, once a day for 3 consecutive days, and 5 grams of "Faraciteside" per kilogram of bait is fed continuously for 3 days.
After 30 days to 40 days of pond cultivation, the fry can grow to 5 cm to 6 cm. At this time, the first net stretching exercise can be performed. The density can be 20,000/mu to 30,000/mu. Continue to cultivate for 30 days to 45 days, fry up to 8 cm, at this time for the second time sparse, after the density of sparse density of 10,000 / acre, the second year of spring fry up to 10 cm to 15 cm in length . After the first net exercise, exercise the fish once every 20 days and observe the growth of the fish. During this period, as the fry gradually grows, the feed amount of the bait is increased, and the water quality becomes fat. Therefore, the water quality should be changed depending on whether the water is fat or thin, or the fry activity is changed regularly or from time to time to keep the water fresh. The feeding of bait is similar to the cultivation of fry.
Second, develop cages
1. Selection of Water Areas Select deep-water reservoirs near villages and houses to set up fishing rafts. One can be easy to manage, and the other is to avoid a dry period cage. Specifically, we should choose the waters that are sunny in Yangyang and the farmland in the bottom of the reservoir or flat and open mountains. This kind of water quality is rich in water quality and natural food. The selection of water sources for pollution sources such as fertilizer plants, pesticide plants and paper mills in the upstream and surrounding areas should be avoided.
2. The cage net cages are made of polyethylene knot nets and their specifications are hexahedral closed cages with lids. The box is 4 meters long, 3 meters wide, 3 meters deep, and 3 cm mesh. Its structure consists of foam and pine planks built into a bridge raft. In general, a fishing boat is installed with 20 to 50 cages.
3. Installation of cages The four fish ropes on the cage are ligated on the four inner corners of the pine wood frame, and the polyethylene cage is used to fasten the perimeter of the cage on the edge of the frame. Two to three kilograms of pebbles or sandbags are hung on the four corners of the cage to allow the cages to fully develop in the water. Net cages should be installed in the water 7 days before the fish species are put into the box, so that the nets will become smooth after epiphytic algae, so as to avoid abrasion damage to the fish epidermis and scales. At the same time, a 40-mesh sieve is used to make a square feed table with a height of 0.2 meters and a height of 0.2 meters. It is hung in a corner of the cage, which is based on the lining of the bottom of the box.
4. Fish Stocking In order to increase the survival rate and breeding efficiency of fingerlings, it is generally advisable to produce large-sized fingerlings with a tail weight of 50 grams or more and stocking about 100 tails per square meter. Starting from the 10th day before the fish is out of the pond, when feeding the feed, Vc1g per kilogram of feed can improve the immune function and anti-stress ability of the fish. Fish should be trained twice or three times before leaving the pond. The day before the fish species are laid, they should be raised in fish cages for 24 hours. This will reduce the loss of fish species in the transport process and improve the efficiency of the fish species. The survival rate.
5. Feed feeding The whole breeding process uses special pellets. The pellets are mainly made of fish meal, cakes, and bran. The small hard pellet feed machine was used to make small fish (particle size 1 mm to 1.5 mm) and adult fish (particle size 2.5 mm to 3.5 mm) with different particle sizes. The content of animal protein in the pellets can reach about 26%. At the initial stage of breeding, small fish feed is used. The daily feed amount is 5% to 7% of the fish's body weight. In the middle and later stages of culture, the adult fish feed is used. The daily feed amount is 3% to 5% of the fish's body weight and it is fed 3 times daily. . In practice, it should also be flexibly adjusted according to weather, water temperature, and food intake. Generally, it is advisable to eat about 1 hour after each feeding.
6. Daily management Generally wash the cage once every 7 days to 10 days. Check and clean the feed table every morning. Determine the amount of feed on the day according to the leftover material. In addition, check whether the cages are broken or slippery every day. If any, repair them at any time to prevent fish escape.
Third, fish disease prevention triangle cage cage breeding density, fish disease prevention and control should be strengthened. Around the cage, quicklime or 110-6 chlorine dioxide is poured on the water every second month, once a day for 2 days to 3 days. In addition, woven bags, each bag containing 100 grams to 150 grams of bleach or copper sulphate (alternate use), hung above the feed table, each bag hanging 1 bag, after the drug solution is added to prevent fish disease. In the event of erythroderma disease, each diseased cage can use chlorine dioxide 4g to 5g watered, once a day, for 3 consecutive days, and add 1g to 1.5g of ciprofloxacin per kilogram of feed. Feed for 3 days. If water poisoning occurs, sick fish can be soaked with 0.4% baking soda and salt solution for 20 minutes to 30 minutes. If rotten fleas occur, each of the onset cages can be splashed with quick lime 800g to 1000g, once a day for 3 consecutive days, and 5 grams of "Faraciteside" per kilogram of bait is fed continuously for 3 days.
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