Chinese barb, seed breeding method
2018-05-25 01:41:22
Chinese barbs, also known as saw barbs and clear waves, are mainly distributed in the upper and middle reaches of the Yangtze River and its tributaries. The Xichang area in Sichuan is rich in this fish. China's barb is delicate, tender, nutritious, and has the characteristics of detoxification, detoxification, and cough relieving. It is a valuable fish that consumers have always loved. In recent years, due to overfishing and serious pollution of water bodies, wild resources are increasingly depleted. The current market price is as high as RMB 50/kg, which is still in short supply. Therefore, according to the successful experience of artificial breeding of Chinese barbs in Sichuan and Chongqing, the author introduced the cultivation techniques of the seedlings as follows:
First, the fry cultivation and cultivation pool is generally a cement pool, with an area of ​​20 to 100 square meters, a depth of 1.2 to 1.5 meters, and ample water sources. Put the water in the pond 10 to 15 days before draining, remove the black silt at the bottom of the pond, and use 80 g of lime slurry per acre to disinfect the whole pool and disinfect it evenly. The water can be infused the next day after disinfection. The initial water level should be controlled at 80 cm to 100 cm, and then 250 kg to 350 kg of fully-fermented and disinfected manure should be placed per mu to facilitate the growth of bait organisms.
About 1 day after hatching, the fry can grow up to 1 cm in length and have been able to feed on copepods and cladocerans. At this time, fry stocking is started. Before stocking, several fryers were used to test the water for 24 hours, and they were stocked after normal conditions. Stocking densities range from 50 to 100 per square meter. When stocking, note that the water temperature difference cannot exceed 2°C. After fry stocking, deepen the pool water daily with micro-flowing water. Feeding more than 3 times a day, feeding plankton and egg yolk mainly in the first 5 days, feeding leeches and powdered feed from the 6th to the 10th day, and feeding peanut bran on the 11th to 30th days. Water squid and squid feed. Adhere to the patrol pond every morning and observe the water color. The transparency is generally controlled at about 30 cm. If there are too many plankton and the water quality is poor, the water should be changed appropriately to reduce the density of the food organisms and keep the water fresh. After about 30 days of cultivation, the fry generally grows to a size of 4 cm to 5 cm and can be placed in large pools for fingerling cultivation.
Second, the species of fish breeding fish breeding pond area of ​​1 mu ~ 3 acres is appropriate, water depth of 1.5 meters to 2 meters. Put about 150kg of quicklime and disinfect water per acre 7 days to 10 days before planting. Select stocks of individuals with a healthy body, no disease, no injury, and a size of 4 cm or more. Before soaking, fish seeds were soaked with 120 mg/L potassium permanganate for about 15 minutes, and the stocking density was 3 to 5 tails per square meter. It was better to feed whole grain feed containing more than 35% crude protein. The third day after the fish pool began to tame, the initial period of eating less, it is appropriate to feed a small amount of multiple, 5 days to 7 days, with the fish species into the normal food, the number of feeding should be reduced, every morning, Each time in the afternoon and evening, the daily feeding amount is 3% to 5% of the fish's body weight. After 10 days, the fish fry body is about 6 cm long, and the fish that feeds 80% of the principle is sufficient to leave. Because Chinese barbs have certain plant food habits, a small amount of fresh green material should be fed regularly to supplement part of the vitamins, which is beneficial to the growth of fish species.
Chinese barbs grow in a water environment with fresh water and high dissolved oxygen content. Each pond can be equipped with a 0.75 kW or 1.5 kW impeller aerator according to the size of the fish pond. In case of hot and rainy weather, special attention should be paid to observing the activities of fish species. In the event of signs of hypoxia, aerators should be turned on for oxygenation. Under normal circumstances, aerators are opened every morning and noon for 1 hour to 2 hours. The fish ponds are sterilized with quicklime every half month at an amount of 15 to 20 kilograms per mu to inhibit the growth of harmful bacteria and the decomposition of organic substrates to ensure the growth of fish species in a good water environment. After 100 days to 120 days of careful rearing, the species can grow from 4 cm long to 80 g to 100 g per tail, and the survival rate is usually over 90%.
First, the fry cultivation and cultivation pool is generally a cement pool, with an area of ​​20 to 100 square meters, a depth of 1.2 to 1.5 meters, and ample water sources. Put the water in the pond 10 to 15 days before draining, remove the black silt at the bottom of the pond, and use 80 g of lime slurry per acre to disinfect the whole pool and disinfect it evenly. The water can be infused the next day after disinfection. The initial water level should be controlled at 80 cm to 100 cm, and then 250 kg to 350 kg of fully-fermented and disinfected manure should be placed per mu to facilitate the growth of bait organisms.
About 1 day after hatching, the fry can grow up to 1 cm in length and have been able to feed on copepods and cladocerans. At this time, fry stocking is started. Before stocking, several fryers were used to test the water for 24 hours, and they were stocked after normal conditions. Stocking densities range from 50 to 100 per square meter. When stocking, note that the water temperature difference cannot exceed 2°C. After fry stocking, deepen the pool water daily with micro-flowing water. Feeding more than 3 times a day, feeding plankton and egg yolk mainly in the first 5 days, feeding leeches and powdered feed from the 6th to the 10th day, and feeding peanut bran on the 11th to 30th days. Water squid and squid feed. Adhere to the patrol pond every morning and observe the water color. The transparency is generally controlled at about 30 cm. If there are too many plankton and the water quality is poor, the water should be changed appropriately to reduce the density of the food organisms and keep the water fresh. After about 30 days of cultivation, the fry generally grows to a size of 4 cm to 5 cm and can be placed in large pools for fingerling cultivation.
Second, the species of fish breeding fish breeding pond area of ​​1 mu ~ 3 acres is appropriate, water depth of 1.5 meters to 2 meters. Put about 150kg of quicklime and disinfect water per acre 7 days to 10 days before planting. Select stocks of individuals with a healthy body, no disease, no injury, and a size of 4 cm or more. Before soaking, fish seeds were soaked with 120 mg/L potassium permanganate for about 15 minutes, and the stocking density was 3 to 5 tails per square meter. It was better to feed whole grain feed containing more than 35% crude protein. The third day after the fish pool began to tame, the initial period of eating less, it is appropriate to feed a small amount of multiple, 5 days to 7 days, with the fish species into the normal food, the number of feeding should be reduced, every morning, Each time in the afternoon and evening, the daily feeding amount is 3% to 5% of the fish's body weight. After 10 days, the fish fry body is about 6 cm long, and the fish that feeds 80% of the principle is sufficient to leave. Because Chinese barbs have certain plant food habits, a small amount of fresh green material should be fed regularly to supplement part of the vitamins, which is beneficial to the growth of fish species.
Chinese barbs grow in a water environment with fresh water and high dissolved oxygen content. Each pond can be equipped with a 0.75 kW or 1.5 kW impeller aerator according to the size of the fish pond. In case of hot and rainy weather, special attention should be paid to observing the activities of fish species. In the event of signs of hypoxia, aerators should be turned on for oxygenation. Under normal circumstances, aerators are opened every morning and noon for 1 hour to 2 hours. The fish ponds are sterilized with quicklime every half month at an amount of 15 to 20 kilograms per mu to inhibit the growth of harmful bacteria and the decomposition of organic substrates to ensure the growth of fish species in a good water environment. After 100 days to 120 days of careful rearing, the species can grow from 4 cm long to 80 g to 100 g per tail, and the survival rate is usually over 90%.