Efficient and healthy breeding techniques for ponds for salmon farming
I. Pond conditions
The area should not be too large, generally 2-10 acres is appropriate, the water depth is 1.5-2 meters, and it is convenient to enter and drain. The bottoms are better with less loam and silt or newly opened pond.
Second, the preparation of eel before stocking
Before restocking, the ponds should be refurbished. First, pool water should be drained to remove silt from the bottom of the pool and be fully exposed to sunlight to reduce the disease, loosen the soil, and accelerate the decomposition of organic matter. 20-30 days before planting, water 30-40 cm, per acre with lime 70-80kg Quanchiposa, or with tea pot 30-40kg Quanchiposa, clear pond. After the pond is clear, the pond water level is adjusted to 50-60 cm. When the water is injected, the water inlet must be filtered with a dense net to prevent wild fish and enemy-damaged creatures from entering the pond. Two to three days prior to seeding, dozens of fish fry were used to observe the fry activity in the pond cage. If normal, the drug toxicity in the pond disappeared. Put 50-800,000 conventional fish Wuzi per acre, so that the carp early in the pond has enough food to make it grow quickly to improve the survival rate.
Three, carp seeding
The main pond raising is generally 3-5 cm carp seedlings is good, mu 1000-1500 tail, carp seedlings can be used before the 2% concentration of salt solution can be disinfected for about 2 minutes.
Fourth, the bait fish feeding
Firstly feed the appropriate amount of baitfish in time. The length of the bait is about 40-60% of the body length of the squid. After that, with the growth of the squid, the amount of bait is 5-10% of the weight of the squid, every other day. Feed it once a day for 3-5 days to maintain a certain density of bait fish in the pond. Do not be more or less, sometimes not. In the pond culture process, it is necessary to regularly check the food and fish feeding conditions. In particular, during the peak season of squid feeding, different specifications of bait fish should be replenished according to the growth of the squid to meet the ingestion of different sizes of squid. demand.
V. Water Quality Management
The carp hi likes to live in an environment with fresh water and high dissolved oxygen. Therefore, the water quality of the pool is kept free of pollution, and there is enough dissolved oxygen to be the key to farming carp. Therefore, regular water injection is required, and each time the amount of water injected is 30% of the amount of pond water. It is advisable to use the right and left handedness, especially during the summer high temperature period. Normally, new water should be filled every 5 days from June to September, and other seasons can be conducted 10-15 days. Regular use of "bottom benign" or "bottom improvement" should be used regularly. The weather is sweltering and the oxygen is turned on in the hot season and early morning so that the pond can maintain sufficient dissolved oxygen to provide a good environment for the normal growth of the catfish.
VI. Disease Prevention
1, fulminant bleeding
Diseased fish reeling, liver whitening, congestion of internal organs, especially in the stomach with massive hyperemia, accompanied by ascites, intestine filled with yellow mucus, high incidence of the disease, contagious, pop peak from July to September, popular Water temperature 20-30cm, the main damage to more than 10 cm of carp seedlings. The disease prevention and control methods: 1 to maintain good water quality, enhance fish resistance. 2Sprinkle "chlorine dioxide" or "bromochloroheine" regularly. 3 When the onset of disease can be used "punctuation" Quanchiposa, again every other day, once every 2-3 times.
2. Parasitic diseases
It is caused by the worms, worms, parasites and other parasites on the body and surface of the worms. The diseased fish has increased mucus on the surface, rotted ends of the enamels, inflammation of the epidermis, and death from respiratory difficulties. This occurs year-round, mainly at low temperatures. Harmful fry and fingerlings. The disease prevention and control method: 1 thorough clear pond, do a good job of water source disinfection. 20.7ppm copper sulfate, ferrous sulfate mixture 5:2 Quanchiposa. 3 Sprinkle with “avermectin†or “ivermectin†Quanchipu. 4 After the parasite is killed, use the “punctuation†Quanchiposa to disinfect.
Seven, timely capture the listing
The area should not be too large, generally 2-10 acres is appropriate, the water depth is 1.5-2 meters, and it is convenient to enter and drain. The bottoms are better with less loam and silt or newly opened pond.
Second, the preparation of eel before stocking
Before restocking, the ponds should be refurbished. First, pool water should be drained to remove silt from the bottom of the pool and be fully exposed to sunlight to reduce the disease, loosen the soil, and accelerate the decomposition of organic matter. 20-30 days before planting, water 30-40 cm, per acre with lime 70-80kg Quanchiposa, or with tea pot 30-40kg Quanchiposa, clear pond. After the pond is clear, the pond water level is adjusted to 50-60 cm. When the water is injected, the water inlet must be filtered with a dense net to prevent wild fish and enemy-damaged creatures from entering the pond. Two to three days prior to seeding, dozens of fish fry were used to observe the fry activity in the pond cage. If normal, the drug toxicity in the pond disappeared. Put 50-800,000 conventional fish Wuzi per acre, so that the carp early in the pond has enough food to make it grow quickly to improve the survival rate.
Three, carp seeding
The main pond raising is generally 3-5 cm carp seedlings is good, mu 1000-1500 tail, carp seedlings can be used before the 2% concentration of salt solution can be disinfected for about 2 minutes.
Fourth, the bait fish feeding
Firstly feed the appropriate amount of baitfish in time. The length of the bait is about 40-60% of the body length of the squid. After that, with the growth of the squid, the amount of bait is 5-10% of the weight of the squid, every other day. Feed it once a day for 3-5 days to maintain a certain density of bait fish in the pond. Do not be more or less, sometimes not. In the pond culture process, it is necessary to regularly check the food and fish feeding conditions. In particular, during the peak season of squid feeding, different specifications of bait fish should be replenished according to the growth of the squid to meet the ingestion of different sizes of squid. demand.
V. Water Quality Management
The carp hi likes to live in an environment with fresh water and high dissolved oxygen. Therefore, the water quality of the pool is kept free of pollution, and there is enough dissolved oxygen to be the key to farming carp. Therefore, regular water injection is required, and each time the amount of water injected is 30% of the amount of pond water. It is advisable to use the right and left handedness, especially during the summer high temperature period. Normally, new water should be filled every 5 days from June to September, and other seasons can be conducted 10-15 days. Regular use of "bottom benign" or "bottom improvement" should be used regularly. The weather is sweltering and the oxygen is turned on in the hot season and early morning so that the pond can maintain sufficient dissolved oxygen to provide a good environment for the normal growth of the catfish.
VI. Disease Prevention
1, fulminant bleeding
Diseased fish reeling, liver whitening, congestion of internal organs, especially in the stomach with massive hyperemia, accompanied by ascites, intestine filled with yellow mucus, high incidence of the disease, contagious, pop peak from July to September, popular Water temperature 20-30cm, the main damage to more than 10 cm of carp seedlings. The disease prevention and control methods: 1 to maintain good water quality, enhance fish resistance. 2Sprinkle "chlorine dioxide" or "bromochloroheine" regularly. 3 When the onset of disease can be used "punctuation" Quanchiposa, again every other day, once every 2-3 times.
2. Parasitic diseases
It is caused by the worms, worms, parasites and other parasites on the body and surface of the worms. The diseased fish has increased mucus on the surface, rotted ends of the enamels, inflammation of the epidermis, and death from respiratory difficulties. This occurs year-round, mainly at low temperatures. Harmful fry and fingerlings. The disease prevention and control method: 1 thorough clear pond, do a good job of water source disinfection. 20.7ppm copper sulfate, ferrous sulfate mixture 5:2 Quanchiposa. 3 Sprinkle with “avermectin†or “ivermectin†Quanchipu. 4 After the parasite is killed, use the “punctuation†Quanchiposa to disinfect.
Seven, timely capture the listing
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