Rainbow Trout Stream Culture Technology
Rainbow trout is named after a rainbow-red vertical pattern along its line. Rainbow trout has the advantages of delicious meat, rich nutrition, less meat, high food value, rapid growth, and easy artificial reproduction. It has now become the top four freshwater aquaculture with high yield and excellent quality that the United Nations Food and Agriculture Organization has promoted to the world. One of the species is listed as a premium fish. Rainbow trout living water temperature 2 °C ~ 25 °C, the optimum water temperature is 12 °C ~ 20 °C, its adaptability is very wide, both in the pond breeding, but also in reservoirs, lakes, rivers, stocking, especially in running water All seasons can grow and the yield is high. Large-scale breeding practices have proved that the average yield of adults per mu is 30,000 kilograms to 35,000 kilograms, with a maximum of 50,000 kilograms or more. Therefore, the rainbow trout stream water breeding prospects are attractive.
First, the construction and layout of fish ponds A complete farm should be based on different growth stages of rainbow trout, with larval fish ponds, fry pools, fingerling pools, adult fish ponds, broodstock ponds and reserve broodstock ponds, etc. 0.5%, 1.0%, 12.5%, 80%, 3.0%, 3.0% of the area, and a small amount of quarantine pools should be set up in the places where conditions permit, so as to prepare for isolation and quarantine of diseased fish. The larval fish ponds, fish nursery ponds, and fingerling pools are preferably made of stone or concrete structures. Adult fish ponds and broodstock ponds can be either soil or stone or concrete structures. Regardless of the structure of the fish pond, the shape of the fish pond must be determined in view of the smooth flow of water, easy drainage, and the full utilization of land, as well as the reduction of construction costs. The layout of various types of fish ponds is: larval fish ponds, fry ponds, fingerling ponds are placed in front, and adult fish and broodstock ponds are behind. The quarantine pool should use water alone, and the discharged water can't be reused. According to the terrain, there should be a certain gap between each row of fish ponds to facilitate natural water flow.
Each fish pond should have an inlet, a drain, and a sewage outlet. The size of the inlet and outlet should be determined according to the flow rate of water, the flow rate, the size of the fish pond, the shape of the fish pond, the method of water intake, and the number of water changes required. If the water inlet and drain are of the direct current type, the outlet is wider, so as to facilitate oxygen increase. If the inlet is filled with water or water, the size of the outlet should be designed according to the required flow rate, water pressure, and flow rate requirements. . Barriers should be set at the inlet and outlet to prevent fish escape. Barriers should be tight and the spacing should be determined based on the size of the fish.
Second, feeding and management of the whole process of feeding rainbow trout, counting from the hatching of eggs, can be divided into larvae (from hatching to open two months only), fry (from two months after the start of eating to 6 Month only), fingerling period (from 9 months after the start of eating until the end of the year) and adult fish stage (starting from the second year of January to the sale).
Within 20 days after hatching, larvae rely on the nutrients in their yolk sac to maintain their growth and development, with about 10,000 to 50,000 tails per square meter. After 20 days of incubation, the feed is started. The cooked egg yolk can be initially slurried into the fish pond. After 1 month of eating, 500 to 1000 can be placed per square meter. You can use gauze to extrude the cooked egg yolk so that the yolks are finely granules and drip in water. Later, egg whites can also be used together. Can also be used animal liver, fresh fish into a paste, drip into the water feeding. Feed 6 to 8 times a day. Daily feeding can account for 12% of fish's body weight.
After two months of eating, the larvae have weighed about 1 gram and entered the fry period. They can stock 200 to 500 fishes per square metre. At this time, they can all feed pelleted feed. However, animal ingredients in feed must be maintained at more than 80%. The amount of daily feeding can account for about 9% of the fish's body weight, and four times daily feeding. Six months after the start of eating, until the end of the year, 50 to 200 fishes per square meter can be stocked. Can be fed into adult fish feed, the amount of feeding can account for about 5% of the fish's weight, the number of daily feeding 3 to 4 times.
In the adult stage, 15 to 50 fishes can be stocked per square, and the water depth is 1 to 2 meters. Animal feeds account for 30% to 40% of the feed, and plant feeds account for 60% to 70%. The particle size is palatability, usually 4 mm to 8 mm in diameter, and it is fed twice daily. The amount fed is 2% to 3% of the total fish weight. In order to achieve high yields of fish, management must first maintain sufficient water volume and set up oxygen-increasing equipment. Once oxygen deficiency, supplement it immediately. Secondly, the fish that have reached the food standard are often sold in time for sale, and individuals with significant differences will be selected and kept in separate ponds.
First, the construction and layout of fish ponds A complete farm should be based on different growth stages of rainbow trout, with larval fish ponds, fry pools, fingerling pools, adult fish ponds, broodstock ponds and reserve broodstock ponds, etc. 0.5%, 1.0%, 12.5%, 80%, 3.0%, 3.0% of the area, and a small amount of quarantine pools should be set up in the places where conditions permit, so as to prepare for isolation and quarantine of diseased fish. The larval fish ponds, fish nursery ponds, and fingerling pools are preferably made of stone or concrete structures. Adult fish ponds and broodstock ponds can be either soil or stone or concrete structures. Regardless of the structure of the fish pond, the shape of the fish pond must be determined in view of the smooth flow of water, easy drainage, and the full utilization of land, as well as the reduction of construction costs. The layout of various types of fish ponds is: larval fish ponds, fry ponds, fingerling ponds are placed in front, and adult fish and broodstock ponds are behind. The quarantine pool should use water alone, and the discharged water can't be reused. According to the terrain, there should be a certain gap between each row of fish ponds to facilitate natural water flow.
Each fish pond should have an inlet, a drain, and a sewage outlet. The size of the inlet and outlet should be determined according to the flow rate of water, the flow rate, the size of the fish pond, the shape of the fish pond, the method of water intake, and the number of water changes required. If the water inlet and drain are of the direct current type, the outlet is wider, so as to facilitate oxygen increase. If the inlet is filled with water or water, the size of the outlet should be designed according to the required flow rate, water pressure, and flow rate requirements. . Barriers should be set at the inlet and outlet to prevent fish escape. Barriers should be tight and the spacing should be determined based on the size of the fish.
Second, feeding and management of the whole process of feeding rainbow trout, counting from the hatching of eggs, can be divided into larvae (from hatching to open two months only), fry (from two months after the start of eating to 6 Month only), fingerling period (from 9 months after the start of eating until the end of the year) and adult fish stage (starting from the second year of January to the sale).
Within 20 days after hatching, larvae rely on the nutrients in their yolk sac to maintain their growth and development, with about 10,000 to 50,000 tails per square meter. After 20 days of incubation, the feed is started. The cooked egg yolk can be initially slurried into the fish pond. After 1 month of eating, 500 to 1000 can be placed per square meter. You can use gauze to extrude the cooked egg yolk so that the yolks are finely granules and drip in water. Later, egg whites can also be used together. Can also be used animal liver, fresh fish into a paste, drip into the water feeding. Feed 6 to 8 times a day. Daily feeding can account for 12% of fish's body weight.
After two months of eating, the larvae have weighed about 1 gram and entered the fry period. They can stock 200 to 500 fishes per square metre. At this time, they can all feed pelleted feed. However, animal ingredients in feed must be maintained at more than 80%. The amount of daily feeding can account for about 9% of the fish's body weight, and four times daily feeding. Six months after the start of eating, until the end of the year, 50 to 200 fishes per square meter can be stocked. Can be fed into adult fish feed, the amount of feeding can account for about 5% of the fish's weight, the number of daily feeding 3 to 4 times.
In the adult stage, 15 to 50 fishes can be stocked per square, and the water depth is 1 to 2 meters. Animal feeds account for 30% to 40% of the feed, and plant feeds account for 60% to 70%. The particle size is palatability, usually 4 mm to 8 mm in diameter, and it is fed twice daily. The amount fed is 2% to 3% of the total fish weight. In order to achieve high yields of fish, management must first maintain sufficient water volume and set up oxygen-increasing equipment. Once oxygen deficiency, supplement it immediately. Secondly, the fish that have reached the food standard are often sold in time for sale, and individuals with significant differences will be selected and kept in separate ponds.
Sanwei External Fixator is designed by Hangwei. It has a complete product line in different parts. The clamp and spherical needle holder gives high flexibility in surgery. The material is carbon fibre or stainless steel.
Certification: CE & ISO13485
Material: Aluminium
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