The suitable autumn water temperature is the peak season for the growth of carp. Grasping this favorable opportunity and strengthening management measures will play an important role in promoting the growth of carp, raising the carp size, improving the quality of carp, and increasing the breeding efficiency.
First, reasonable control of the density of fish in the pond The carp farming ponds are generally stocked with three types of fish: squid, fish, and bait fish for feeding squid. Reasonable control of the proportion of the three types of fish in the pool is conducive to the improvement of the yield of carp. After the previous stage of cultivation, some large-sized fish species have grown into adult fish, reaching the market specifications, seizing the market gap, timely catching adult fish, reducing the pond load, making the proportion of the three types of ponds suitable, and distribution is reasonable. Maintaining a dynamic balance can effectively promote fish growth and aquaculture efficiency in the pond.
Second, the rational feeding of bait fish According to the growth of carp, feeding patterns, diameter size, targeted selection of bait fish species and specifications to meet the carp bait demand. General requirements of bait fish for the body length of 30% - 40% of carp, slender body shape, no hard spines, swimming ability is poor, easy to carp prey. The daily food intake of squid is generally 6% -10% of its own body weight. When determining the amount of squid, this is the measurement standard. It is advisable to feed enough squid for 4-5 days for each feeding. The bait fish should be soaked and disinfected before entering the pool to prevent the carp from causing diseases and causing losses due to eating bait fish carrying bacteria.
Third, timely water change water carp requires fresh water, rich dissolved oxygen. According to water quality conditions, water injection, water change or micro-flowing water can be used to keep the water fresh and stable. When the water level is less than 1.5 meters, timely irrigation to make up for the water level. Change the water to 4-7 days is appropriate, change the amount of water should not be too large, each time 20-30 centimeters is appropriate, to avoid discomfort caused by a large number of water changes on the squid. When conditions permit, micro-fluid aquaculture should be adopted, which can effectively maintain the fresh water quality and increase the yield per area of ​​carp. The general principle is to keep the dissolved oxygen in the pool water greater than 4 mg/l, and the water transparency is about 40 cm.
Fourth, pay attention to the regulation of water quality Carp to adapt to the alkaline water quality conditions, regular use of quicklime whole pool to adjust the pH of the water body. When entering the autumn, once every 10 days, splash once, each time 10-15 g/m3, later each half-time, each time 5-10 g/m3. Ponds must maintain a certain density of water plants, accounting for about one-tenth of the surface of the water, so that the carp can hide and feed, and improve the water environment, increase dissolved oxygen. The use of microbial agents can effectively improve water quality. If the dissolved oxygen in the pool water is lower than 4 mg/L, use oxygen aerator or chemical oxygenation agent to increase oxygen in time to prevent the catfish from floating or flooding due to lack of oxygen.
Fifth, take appropriate disease prevention measures Pond culture of salmon should be mainly to prevent disease. Cod generally prey in the evening or early morning. When using drugs to prevent disease, it is necessary to avoid the predation time of eel and reduce the impact of drugs on eel. The appropriate time for using eel is 10 o'clock in the sunny morning. The types of drugs vary depending on the object to be controlled. For example, bactericidal agents such as bromochlorohydantoin and dibromohydantoin can be used for the prevention of bacterial diseases. Bio-insecticides such as fish and shrimp insecticides are preferred for the prevention of parasitic diseases.
First, reasonable control of the density of fish in the pond The carp farming ponds are generally stocked with three types of fish: squid, fish, and bait fish for feeding squid. Reasonable control of the proportion of the three types of fish in the pool is conducive to the improvement of the yield of carp. After the previous stage of cultivation, some large-sized fish species have grown into adult fish, reaching the market specifications, seizing the market gap, timely catching adult fish, reducing the pond load, making the proportion of the three types of ponds suitable, and distribution is reasonable. Maintaining a dynamic balance can effectively promote fish growth and aquaculture efficiency in the pond.
Second, the rational feeding of bait fish According to the growth of carp, feeding patterns, diameter size, targeted selection of bait fish species and specifications to meet the carp bait demand. General requirements of bait fish for the body length of 30% - 40% of carp, slender body shape, no hard spines, swimming ability is poor, easy to carp prey. The daily food intake of squid is generally 6% -10% of its own body weight. When determining the amount of squid, this is the measurement standard. It is advisable to feed enough squid for 4-5 days for each feeding. The bait fish should be soaked and disinfected before entering the pool to prevent the carp from causing diseases and causing losses due to eating bait fish carrying bacteria.
Third, timely water change water carp requires fresh water, rich dissolved oxygen. According to water quality conditions, water injection, water change or micro-flowing water can be used to keep the water fresh and stable. When the water level is less than 1.5 meters, timely irrigation to make up for the water level. Change the water to 4-7 days is appropriate, change the amount of water should not be too large, each time 20-30 centimeters is appropriate, to avoid discomfort caused by a large number of water changes on the squid. When conditions permit, micro-fluid aquaculture should be adopted, which can effectively maintain the fresh water quality and increase the yield per area of ​​carp. The general principle is to keep the dissolved oxygen in the pool water greater than 4 mg/l, and the water transparency is about 40 cm.
Fourth, pay attention to the regulation of water quality Carp to adapt to the alkaline water quality conditions, regular use of quicklime whole pool to adjust the pH of the water body. When entering the autumn, once every 10 days, splash once, each time 10-15 g/m3, later each half-time, each time 5-10 g/m3. Ponds must maintain a certain density of water plants, accounting for about one-tenth of the surface of the water, so that the carp can hide and feed, and improve the water environment, increase dissolved oxygen. The use of microbial agents can effectively improve water quality. If the dissolved oxygen in the pool water is lower than 4 mg/L, use oxygen aerator or chemical oxygenation agent to increase oxygen in time to prevent the catfish from floating or flooding due to lack of oxygen.
Fifth, take appropriate disease prevention measures Pond culture of salmon should be mainly to prevent disease. Cod generally prey in the evening or early morning. When using drugs to prevent disease, it is necessary to avoid the predation time of eel and reduce the impact of drugs on eel. The appropriate time for using eel is 10 o'clock in the sunny morning. The types of drugs vary depending on the object to be controlled. For example, bactericidal agents such as bromochlorohydantoin and dibromohydantoin can be used for the prevention of bacterial diseases. Bio-insecticides such as fish and shrimp insecticides are preferred for the prevention of parasitic diseases.
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