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Trout culture technology
I. Introduction to the technology There are many methods for squid farming, including ponds, reservoirs, lakes, rivers, and cages. It can be either monocultured or polycultured or raised. Ponds and cages are mainly monoculture, while reservoirs, lakes, and rivers are polyculture or nesting. For polyculture or nesting, the stocking amount should be determined according to the amount of natural bait fish in the released water. Catfish ponds have a high requirement for single-cultivation and cage culture, and they must be cultured with corresponding specifications of bait fish to ensure that they have sufficient feed. Second, the technical points: 1? Pond single carp pond soil pond is appropriate, choose an area of ​​3 to 5 acres, depth of 1.5 to 2 meters, the bottom of the pool less silt, adequate water, no pollution, convenient drainage and irrigation ponds, each The mouth pond is equipped with a 1.5-kilowatt aerator to ensure sufficient oxygen. And according to 1:3 equipped with bait fish cultivation pond. Prior to stocking, the fish should be disinfected with quicklime or bleached clear ponds. The general stocking specifications 4 ~ 6cm fish species 600 ~ 1000 tail, the fish species requires a healthy, neat scale, disease-free without injury. For bait fish, rectangular varieties are preferred, such as: 鲮, 鲢, 鳙, 鲴, 鲤, etc. The production of bait fish should be strictly in accordance with the growth specifications of the catfish and should be reasonably supported. The body length of the common bait fish should be less than 50% of the length of the carp. Feed the bait fish once every two days, feeding 6-8 times the amount of carp, keeping the ratio of bait fish and carp 3 to 4:1, and finding that the amount of bait is insufficient, feed the bait in time, so as not to Fish eat each other because of hunger. Replace some pool water every 10-15 days to keep the water fresh. At the same time, limefish pond or chlorine dioxide is used to disinfect the carp pond every 15 days to prevent and treat diseases. 2? Squid cage cage culture specifications 471.5 meters or 481.5 meters, polyethylene material. Mesh 1.5 cm is appropriate. The water area where the cage is to be placed should be selected to have a fresh water quality, sufficient dissolved oxygen, stable water level, and a 2.5-meter deep reservoir bay, lake or river course. Each square meter is stocked with 4-6 cm of summer flowers 50-80 tails or 50 grams of winter pieces of 30-50 tails. The bait fish can be cultivated or purchased from natural ponds in the nearest pond. The length of the fed bait fish is generally the same. For 50% of the total length of the squid, feed once a day. The amount of squid per day is 3-4 times the amount of squid, and the squid should be sterilized with salt solution before feeding. Inspect every day and find problems in time. Wash the cage regularly to ensure smooth water flow. In summer and autumn, chlorine dioxide or bleaching powder is spilled once every two weeks to prevent fish disease. If diseases are found, they should be treated with formaldehyde, copper sulphate, chlorine dioxide and bleaching powder in time. When the squid reaches the listed specifications, it can be arrested in time to increase economic efficiency.