Freshwater lobster is low-fat, low-cholesterol, high-protein, nutrient-rich, nourishing and health care, and has large body weight. Generally, it has a body weight of 100-200 grams, and the largest individual is about 500 grams. It grows fast and has a high yield. The year of stocking can be harvested in the same year. The output of shrimp is about 500 kilograms; it has strong adaptability, can endure bad weather environment, and can survive between 3 and 35°C in water temperature, eating mixed food, eating both animal feed and artificial feed and humus, and coarse Easy to raise, artificial feeding of freshwater lobster is a good way for the majority of farmers and friends.
1. Pond construction Freshwater lobsters prefer to live in fresh water and oxygen-rich water environments. Therefore, the construction of ponds should be chosen where the ventilation is sunny, the water sources are adequate, there is no pollution source, and the water injection and drainage are convenient. Each pond should be 2 to 8 mu and the water depth should be 1 to 1.5 meters. The bottom of the pond is silt and flat. The whole pond requires no water leakage. Filters should be installed at the inlet and outlet of the pond to prevent the entry of harmful organisms such as wild fish. There must be a 50-cm-high anti-escape facility around the pond. Around the pond, it is necessary to stock aquatic plants, water hyacinths, water lettuces, and other aquatic plants. The coverage is generally 1/3 of the surface of the pond. A certain number of shades such as stones and tiles should be placed in the pool for the shelter of lobster.
2. Clear pond disinfection Newly built lobster ponds can be used to clear the pond with lime, the amount of 100 kg per mu. If lobsters are bred in old ponds, they must be sterilized by dry ponds. In addition to splashing lime, they must thoroughly remove predators, maggots, black fish, snakes and rats.
3. 10 to 15 days before the stocking of fry shrimps, stocks of 200 kg or so per mu of ponds are fully cooked and organic fertilizer is applied to fertilize the water. The time for stocking the shrimp should be from March to May. Choose sunny morning or evening and pay attention to temperature difference. If the temperature difference is large, first use a small amount of water to slowly adjust the water temperature in the container for transporting the seedlings. When the temperature of the water in the container is close to the temperature of the pool water, gently put the shrimp into the pool again to prevent the shrimp from catching a cold. The stocking size of shrimps is generally 3 to 5 cm, and the stocking density is 3500 to 4000 tails per mu; if the shrimps are small, the stocking amount can be appropriately increased, and the specifications of shrimps stocked in the same pond need to be neat and consistent.
4. After 3 days of putting the seedlings carefully, the minced fish and minced meat are mainly used. In the following month, the small fish, meat, or artificially mixed baits are to be released; until the shrimp grows to 6 to 7 cm At the time, all of the crushed snails, river clams and appropriate amount of plant foods can be fed. The amount of daily feeding was full, no food was left, and no residual baits were taken. Generally, medium and small lobsters were fed at 15% to 20% of body weight, and adult shrimp was fed at 5% to 10% of body weight. Feed each day in the morning and evening, and 70% to 80% of the total daily dose at night. The bait should be placed in the shallow water around the pond. Wherever the lobster is concentrated, more can be cast to facilitate its feeding and feeders to check the eating situation.
5. Strengthen the management of freshwater lobster growth fast, strong metabolism, oxygen consumption. Therefore, the water quality of the pond should always be kept fresh. Normally, it needs to add 15 to 20 centimeters of water per week to ensure that the water quality is cool and there is enough dissolved oxygen to keep the water transparency at about 35 centimeters. In daily management, it is necessary to inspect and diligently inspect the ponds and timely remove the moss from the pool; constantly check the inlet and outlet filter screens to prevent worms or wild fish and other harmful organisms from entering due to broken filter screens. When thunderstorms are encountered In bad weather such as hot days and rainy days, it is necessary to reduce or stop feeding. When the weather is too hot and cold, pool water should be properly deepened to stabilize the bottom water temperature. At the same time, it is also necessary to constantly observe the feeding and activity, growth, and shelling of freshwater lobster so that necessary technical measures can be taken in time. If the lobster is found to be unresponsive, swims to the shore, floats to the shore and climbs, it indicates that there is severe lack of oxygen. It is necessary to promptly add water or increase the oxygen in the aerator.
6. Disease prevention and control Freshwater lobsters have higher stocking densities and more diseases, so we must pay attention to prevention and control. One is shrimp shell disease. The disease is caused by fungal infections caused by lobsters attacked by chitin-decomposing bacteria. Usually the edge or top of the shrimp shell is most vulnerable to attack, bacteria can quickly enter the body through the epidermis, causing internal injuries. Can be mixed with 0.9ppm malachite green and 2ppm formalin lobster immersion, medicine bath 20 to 30 minutes. The second is smut. Mainly caused by water pollution and fungal infections. The symptom is that the sputum changes from red to brown or light brown until it is completely black, causing atrophy of the sputum. Control methods are: The diseased lobsters are immersed 2~3 times in 2~3ppm carbazolone, 8~10 minutes each time, or with 10ppm methylene blue Quanchiposa. The third is ciliate disease. It is mainly polykeets, bell-shaped insects, etc., which are attached to the body surface, appendages, eyes and tendons of lobsters. When the infection is serious, they can make lobsters restless, swimming frequently at the poolside, preventing food intake, oyster shells and Grow. If a large number of epiphytes on the cockroach, can cause lobster anoxia suffocation death. In general, fresh water can be poured and the pool water can be kept clean for prevention. Treatment can use 0.4ppm copper sulfate solution dip sick lobster for 5 to 6 hours, each treatment for 3 to 5 days.
7. Timely Harvest Freshwater lobster grows fast, usually from March to April, and can be harvested from October to November. At the time of harvesting, one-time fishing can be performed in the evening with dry ponds or seine nets. If you want to list in batches, you can use net fishing.
1. Pond construction Freshwater lobsters prefer to live in fresh water and oxygen-rich water environments. Therefore, the construction of ponds should be chosen where the ventilation is sunny, the water sources are adequate, there is no pollution source, and the water injection and drainage are convenient. Each pond should be 2 to 8 mu and the water depth should be 1 to 1.5 meters. The bottom of the pond is silt and flat. The whole pond requires no water leakage. Filters should be installed at the inlet and outlet of the pond to prevent the entry of harmful organisms such as wild fish. There must be a 50-cm-high anti-escape facility around the pond. Around the pond, it is necessary to stock aquatic plants, water hyacinths, water lettuces, and other aquatic plants. The coverage is generally 1/3 of the surface of the pond. A certain number of shades such as stones and tiles should be placed in the pool for the shelter of lobster.
2. Clear pond disinfection Newly built lobster ponds can be used to clear the pond with lime, the amount of 100 kg per mu. If lobsters are bred in old ponds, they must be sterilized by dry ponds. In addition to splashing lime, they must thoroughly remove predators, maggots, black fish, snakes and rats.
3. 10 to 15 days before the stocking of fry shrimps, stocks of 200 kg or so per mu of ponds are fully cooked and organic fertilizer is applied to fertilize the water. The time for stocking the shrimp should be from March to May. Choose sunny morning or evening and pay attention to temperature difference. If the temperature difference is large, first use a small amount of water to slowly adjust the water temperature in the container for transporting the seedlings. When the temperature of the water in the container is close to the temperature of the pool water, gently put the shrimp into the pool again to prevent the shrimp from catching a cold. The stocking size of shrimps is generally 3 to 5 cm, and the stocking density is 3500 to 4000 tails per mu; if the shrimps are small, the stocking amount can be appropriately increased, and the specifications of shrimps stocked in the same pond need to be neat and consistent.
4. After 3 days of putting the seedlings carefully, the minced fish and minced meat are mainly used. In the following month, the small fish, meat, or artificially mixed baits are to be released; until the shrimp grows to 6 to 7 cm At the time, all of the crushed snails, river clams and appropriate amount of plant foods can be fed. The amount of daily feeding was full, no food was left, and no residual baits were taken. Generally, medium and small lobsters were fed at 15% to 20% of body weight, and adult shrimp was fed at 5% to 10% of body weight. Feed each day in the morning and evening, and 70% to 80% of the total daily dose at night. The bait should be placed in the shallow water around the pond. Wherever the lobster is concentrated, more can be cast to facilitate its feeding and feeders to check the eating situation.
5. Strengthen the management of freshwater lobster growth fast, strong metabolism, oxygen consumption. Therefore, the water quality of the pond should always be kept fresh. Normally, it needs to add 15 to 20 centimeters of water per week to ensure that the water quality is cool and there is enough dissolved oxygen to keep the water transparency at about 35 centimeters. In daily management, it is necessary to inspect and diligently inspect the ponds and timely remove the moss from the pool; constantly check the inlet and outlet filter screens to prevent worms or wild fish and other harmful organisms from entering due to broken filter screens. When thunderstorms are encountered In bad weather such as hot days and rainy days, it is necessary to reduce or stop feeding. When the weather is too hot and cold, pool water should be properly deepened to stabilize the bottom water temperature. At the same time, it is also necessary to constantly observe the feeding and activity, growth, and shelling of freshwater lobster so that necessary technical measures can be taken in time. If the lobster is found to be unresponsive, swims to the shore, floats to the shore and climbs, it indicates that there is severe lack of oxygen. It is necessary to promptly add water or increase the oxygen in the aerator.
6. Disease prevention and control Freshwater lobsters have higher stocking densities and more diseases, so we must pay attention to prevention and control. One is shrimp shell disease. The disease is caused by fungal infections caused by lobsters attacked by chitin-decomposing bacteria. Usually the edge or top of the shrimp shell is most vulnerable to attack, bacteria can quickly enter the body through the epidermis, causing internal injuries. Can be mixed with 0.9ppm malachite green and 2ppm formalin lobster immersion, medicine bath 20 to 30 minutes. The second is smut. Mainly caused by water pollution and fungal infections. The symptom is that the sputum changes from red to brown or light brown until it is completely black, causing atrophy of the sputum. Control methods are: The diseased lobsters are immersed 2~3 times in 2~3ppm carbazolone, 8~10 minutes each time, or with 10ppm methylene blue Quanchiposa. The third is ciliate disease. It is mainly polykeets, bell-shaped insects, etc., which are attached to the body surface, appendages, eyes and tendons of lobsters. When the infection is serious, they can make lobsters restless, swimming frequently at the poolside, preventing food intake, oyster shells and Grow. If a large number of epiphytes on the cockroach, can cause lobster anoxia suffocation death. In general, fresh water can be poured and the pool water can be kept clean for prevention. Treatment can use 0.4ppm copper sulfate solution dip sick lobster for 5 to 6 hours, each treatment for 3 to 5 days.
7. Timely Harvest Freshwater lobster grows fast, usually from March to April, and can be harvested from October to November. At the time of harvesting, one-time fishing can be performed in the evening with dry ponds or seine nets. If you want to list in batches, you can use net fishing.
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