Key points for healthy culture of South American white shrimp
2018-06-04 15:02:54
In order to enable shrimp farmers to obtain high yield during the cultivation of P. vannamei, the technical points for the healthy culture of P. vannamei are summarized as follows:
First, culture environment
1. Shrimp pond cut-off source is the first factor in the healthy culture of shrimp. Shrimp pool bottoms should be completely clear and disinfected, and there is a storage tank. The water filtered by the screen first enters the storage tank for disinfection, precipitation, and then enters the stocking tank. Clear Pond can be used Tong Knin (water depth 15 cm. 6-8 acres, with kilograms); bottom disinfectant can use dibromohydantoin, chlorinated hydantoin or quicklime.
2. The excellent body of water is the fundamental guarantee for the healthy culture of shrimp. An excellent water body should have the following four major indicators: pH 7.8-9.0; drop oxygen: not less than 5 mg/L; ammonia nitrogen less than 0.5 mg/L, nitrite 0.01 mg/L, And there are moderate microalgae communities. Microalgae are the food of shrimp (especially brazing shrimp).
Red brown and green are excellent colors. The transparency should be 30-40 mm. Control measures should be based on lightness or depth of transparency and cultivation of algae or algae. Algae cultivation: Shi Peng Yi Shui Ning, China Water Conservancy Health, Fei Shui Ling and so on. Algae killing: application of complex copper and so on.
3. The aerator is one of the most effective and inexpensive measures for healthy shrimp raising. Increasing dissolved oxygen can inhibit the reproduction of pathogenic viruses, promote the exchange and circulation of shrimp pond water, concentrate the sewage to the pool bottom, reduce the toxicity of ammonia nitrogen and nitrite, and create a good growth environment for shrimp and reduce drug expenditure.
4. Strong stress factors at the turn of spring and summer, cold invasion; high heat, heavy rain or continuous heavy rain; alternating autumn and winter, strong cold frequency, all of these are strong stress factors. At this time, viral diseases and bacterial diseases are the most prone to outbreaks, and poor control is often wiped out. Control measures: 1 Feed high-stabilized, vitamin C containing triphosphate (TPP), such as Sanbao high stability C (LAPP), multivitamin C, E; 2 feeding baits containing active iodine; Two-effect Ning disinfection shrimp ponds; 4 oxygen; 5 timely and appropriate irrigation and drainage, adjust the pH, salinity.
Second, shrimp should be selected robust shrimp, slender body shape, strong vitality, body up to 1.2 centimeters. Before entering the pool, it is advisable to use organic iodine or povidone iodine 50x10-6 (containing 1% of available iodine) for 20-25 minutes. Before the National People's Congress, the large-scale shrimp seedlings raised to 2.5-3.0 cm in the small pond before the National People's Congress will help improve the bred rate. According to the depth of the shrimp pond, the aerator configuration, and the breeding experience, the seedling density can be selected within the range of 10,000 to 40,000 tails per mu.
Third, bait
1. Basic Bio-Bait Basic Bio-Bait is a natural bait that is cultivated throughout the shrimp farming process. It is especially important before the seedlings are released. Yishuining, Feishuiling, disinfected (fermented) chicken manure, organic fertilizer, seawater bio-growth hormone, etc. are all good natural food baits. The water color is green and yellow green. Transparency 30-40 cm is better. After laying the seedlings, appropriate amount of prawn material that has been crushed to 0.5 mm will not only be beneficial to the feeding of juvenile shrimp, but also conducive to the cultivation of natural food, which is beneficial to the growth of juvenile shrimp.
2. With the bait prawn cultivation should adopt high-quality food. The basis of high-quality foods is high-quality protein feed, high-quality fatty acids, and advanced feed additives. Feed additives are the core of the feed. Highly stable, fully reduced, triphosphated vitamin C (LAPP) is the preferred source of vitamin C. Multidimensional should have a sufficient amount of vitamin A, vitamin D, vitamin E, vitamin B1, vitamin B2, nicotinic acid, pantothenic acid and so on. Mine micro, the best choice for organic chelates. Equipped with FRC-II vitality additive additives appetizing anti-toxic taste mouthwash, but also have better results.
Fourth, the control of viral disease Taura syndrome (also known as red body disease), is currently the most vicious enemy of healthy shrimp culture. Although there is no specific drug, it can be controlled. As mentioned above, environmental control, selection of strong seedlings, and quality foods are all effective measures to control viral diseases.
Water quality regulation and application of antiviral drugs are the two most critical measures.
Water quality regulation: General regulation has been as mentioned above. In the growing process, the accumulation of bait and corruption, the accumulation of feces, ecological imbalance (such as algae death) will lead to serious deterioration of the water environment. May release Yishui Ning, China Water Conservancy Health, Concentrated Substrate Amendment, Haizhongbao, and Breeding Po, regular use of double-effect Ning, white turbidity, red body sterilizing, or disinfection with dibromohydantoin, bromochloroheine.
Viral diseases most easily occur when the climate changes. Such as spring cold, continuous heavy rain, rain, typhoon, heavy rain, hot, cold waves. These harsh environments cause shrimp to be under strong stress. Shrimp diseases, especially viral diseases, are most prone to outbreaks. It is important to maintain a high degree of alertness and never be forgotten. First of all, we must pay attention to the weather forecast and take precautions. Feeding diet containing vitamin C (LAPP) with high anti-stress ability, multivitamin C and E, and feeding foods containing organic iodine and shrimp. Immediately eliminate surface water after rain. Take oxygenation measures and disinfect the pool water with mycotoxin.
The application of antiviral drugs is a major move. Organic iodine can effectively kill bacteria and viruses. The inactivated concentration of Penaeus vannamei virus is 10x10-6-13xlo-6. After the food containing organic iodine is eaten by the shrimp, the digestive tract and feces are sterilized. In the manure pool, water and fecal sediments are sterilized. This forms a sterile chain. The bait containing baining works from blocking the synthesis of viral DNA. If a bacterial disease is found, baits containing antibiotics (eg, compound enrofloxacin) are further fed.
First, culture environment
1. Shrimp pond cut-off source is the first factor in the healthy culture of shrimp. Shrimp pool bottoms should be completely clear and disinfected, and there is a storage tank. The water filtered by the screen first enters the storage tank for disinfection, precipitation, and then enters the stocking tank. Clear Pond can be used Tong Knin (water depth 15 cm. 6-8 acres, with kilograms); bottom disinfectant can use dibromohydantoin, chlorinated hydantoin or quicklime.
2. The excellent body of water is the fundamental guarantee for the healthy culture of shrimp. An excellent water body should have the following four major indicators: pH 7.8-9.0; drop oxygen: not less than 5 mg/L; ammonia nitrogen less than 0.5 mg/L, nitrite 0.01 mg/L, And there are moderate microalgae communities. Microalgae are the food of shrimp (especially brazing shrimp).
Red brown and green are excellent colors. The transparency should be 30-40 mm. Control measures should be based on lightness or depth of transparency and cultivation of algae or algae. Algae cultivation: Shi Peng Yi Shui Ning, China Water Conservancy Health, Fei Shui Ling and so on. Algae killing: application of complex copper and so on.
3. The aerator is one of the most effective and inexpensive measures for healthy shrimp raising. Increasing dissolved oxygen can inhibit the reproduction of pathogenic viruses, promote the exchange and circulation of shrimp pond water, concentrate the sewage to the pool bottom, reduce the toxicity of ammonia nitrogen and nitrite, and create a good growth environment for shrimp and reduce drug expenditure.
4. Strong stress factors at the turn of spring and summer, cold invasion; high heat, heavy rain or continuous heavy rain; alternating autumn and winter, strong cold frequency, all of these are strong stress factors. At this time, viral diseases and bacterial diseases are the most prone to outbreaks, and poor control is often wiped out. Control measures: 1 Feed high-stabilized, vitamin C containing triphosphate (TPP), such as Sanbao high stability C (LAPP), multivitamin C, E; 2 feeding baits containing active iodine; Two-effect Ning disinfection shrimp ponds; 4 oxygen; 5 timely and appropriate irrigation and drainage, adjust the pH, salinity.
Second, shrimp should be selected robust shrimp, slender body shape, strong vitality, body up to 1.2 centimeters. Before entering the pool, it is advisable to use organic iodine or povidone iodine 50x10-6 (containing 1% of available iodine) for 20-25 minutes. Before the National People's Congress, the large-scale shrimp seedlings raised to 2.5-3.0 cm in the small pond before the National People's Congress will help improve the bred rate. According to the depth of the shrimp pond, the aerator configuration, and the breeding experience, the seedling density can be selected within the range of 10,000 to 40,000 tails per mu.
Third, bait
1. Basic Bio-Bait Basic Bio-Bait is a natural bait that is cultivated throughout the shrimp farming process. It is especially important before the seedlings are released. Yishuining, Feishuiling, disinfected (fermented) chicken manure, organic fertilizer, seawater bio-growth hormone, etc. are all good natural food baits. The water color is green and yellow green. Transparency 30-40 cm is better. After laying the seedlings, appropriate amount of prawn material that has been crushed to 0.5 mm will not only be beneficial to the feeding of juvenile shrimp, but also conducive to the cultivation of natural food, which is beneficial to the growth of juvenile shrimp.
2. With the bait prawn cultivation should adopt high-quality food. The basis of high-quality foods is high-quality protein feed, high-quality fatty acids, and advanced feed additives. Feed additives are the core of the feed. Highly stable, fully reduced, triphosphated vitamin C (LAPP) is the preferred source of vitamin C. Multidimensional should have a sufficient amount of vitamin A, vitamin D, vitamin E, vitamin B1, vitamin B2, nicotinic acid, pantothenic acid and so on. Mine micro, the best choice for organic chelates. Equipped with FRC-II vitality additive additives appetizing anti-toxic taste mouthwash, but also have better results.
Fourth, the control of viral disease Taura syndrome (also known as red body disease), is currently the most vicious enemy of healthy shrimp culture. Although there is no specific drug, it can be controlled. As mentioned above, environmental control, selection of strong seedlings, and quality foods are all effective measures to control viral diseases.
Water quality regulation and application of antiviral drugs are the two most critical measures.
Water quality regulation: General regulation has been as mentioned above. In the growing process, the accumulation of bait and corruption, the accumulation of feces, ecological imbalance (such as algae death) will lead to serious deterioration of the water environment. May release Yishui Ning, China Water Conservancy Health, Concentrated Substrate Amendment, Haizhongbao, and Breeding Po, regular use of double-effect Ning, white turbidity, red body sterilizing, or disinfection with dibromohydantoin, bromochloroheine.
Viral diseases most easily occur when the climate changes. Such as spring cold, continuous heavy rain, rain, typhoon, heavy rain, hot, cold waves. These harsh environments cause shrimp to be under strong stress. Shrimp diseases, especially viral diseases, are most prone to outbreaks. It is important to maintain a high degree of alertness and never be forgotten. First of all, we must pay attention to the weather forecast and take precautions. Feeding diet containing vitamin C (LAPP) with high anti-stress ability, multivitamin C and E, and feeding foods containing organic iodine and shrimp. Immediately eliminate surface water after rain. Take oxygenation measures and disinfect the pool water with mycotoxin.
The application of antiviral drugs is a major move. Organic iodine can effectively kill bacteria and viruses. The inactivated concentration of Penaeus vannamei virus is 10x10-6-13xlo-6. After the food containing organic iodine is eaten by the shrimp, the digestive tract and feces are sterilized. In the manure pool, water and fecal sediments are sterilized. This forms a sterile chain. The bait containing baining works from blocking the synthesis of viral DNA. If a bacterial disease is found, baits containing antibiotics (eg, compound enrofloxacin) are further fed.