How can aquaculture protect against cold in winter?
Every winter season, many aquaculture farmers worry that cold-water cultured breeds will suffer from cold freezing and frostbite. Most people will catch and catch fish before the winter, so warm and water cultured species before and after winter, especially tilapia , squid prices will drop. A fisherman told the reporter that if these fish can survive the winter, they will be more valuable. This principle is well-known to all, but it is the fear of the winter and the death of a large number of adult fishes. However, aquaculture farmers who do not want to "sell out" the fruits of their labors always want to "get back and forth". Who knows the recent days of low temperatures have caused many aquaculture farmers who did not raise fish to be listed and are very worried about the problems of cold wintering of aquatic products.
How can we make the aquaculture cold-proof winter? This has become a common topic among farmers. For this reason, the reporter deliberately informed the relevant departments of the rescue measures. The relevant technical staff of the Municipal Animal Husbandry, Veterinary and Fishery Bureau told the reporter that the main types of cold-proof aquatic products include tilapia, squid, Macrobrachium rosenbergii, Penaeus vannamei, freshwater whitefish, and seawater fishes cultivated in seawater cages. These varieties have poor resistance to low temperature, and the carp freezes to death at 6-7°C. Tilapia begin to die at 10-12°C. In case of winter, not adopting insulation measures will cause a large number of cold-water breeds to be frozen and frostbite. Therefore, prepare for cold protection. According to the technical staff, the warm water fish and shrimps that are cultivated should be moved as far as possible into the wintering pool. If there is no overwintering pool, deepen the depth of the pond, but use a small amount of water when entering the water. Do not use large amounts of water at one time to prevent the water from interacting at different water temperature levels and stress the fish. Build wind barriers to the north of the pond. And so on. Conditional farms can set up hot water pipes to inject hot water or hot spring water at the bottom of the pond. Minimize human stimulation and interference with cultured species. If you need to pass the pond, the operation must be careful to prevent damaging the fish and do a good job of disinfection; Technical staff emphasized that we must strengthen water quality management, and we should inspect the ponds early, mid and late every day to monitor the water temperature and water quality to prevent oxygen deprivation and deterioration of water quality. Do not warm the open-air pond with the sun light at night. Because the light will induce fish and shrimp to the surface of the pond, it will freeze and freeze. The open-air fish pond should not start the aerator as much as possible to reduce convection under the water in the pool, thereby slowing down the water temperature drop at the bottom of the pond to achieve the purpose of preventing cold. If a pond with frostbite or dead fish is found, the dead fish should be taken away immediately to prevent the dead fish from rotting and contaminating the water body. However, do not immediately apply disinfectant to the fish ponds to prevent the fish and shrimp from producing stress and accelerating death. During the rising water temperature period, it is not tempting to feed feeds to avoid fish diseases caused by floating foods that cause frostbite. After the water temperature rises and stabilizes, appropriate water changes will be made, and water disinfection and water quality control will be carried out. The disinfection of water bodies is preferably done with a small irritating iodine preparation, and depending on the quality of the water, it can be properly used. At the same time, it is fed with artificial compound feed supplemented with vitamin C and fish oil.
The technicians reminded the aquaculture farmers that in the low temperature and rainy season, especially during the gradual recovery of temperature, it is the high incidence period of water mold and small melon worms. These two diseases have serious damage to freshwater fish adults and fry. Take preventive measures. The main preventive measures are: First, to strengthen production management, strengthen seedlings, adult fish cultivation, scientific feeding, improve fish disease resistance; second, keep the water fresh; third, avoid fish injuries. In order to prevent and treat aquatic mold disease, seedlings and adult fishes can be soaked with 2%-3% saline; when catching, transporting and passing ponds, the operation must be meticulous to avoid injury to the fish body; Sprinkling, the drug concentration of 2-4ppm; with bastard bait feeding, 0.1g per kilogram of fish, 3 times a day for 7 days. For the prevention and treatment of Sickiosis, it is recommended that the water temperature should be adjusted to above 20°C for prevention and that the artichoke should be fed with baits at the end of 0.3 to 0.4 grams per kilogram of fish. The disease can be treated for 5 to 7 days.
Gelatin Size 2 Empty Capsule,Empty Gelatin Capsule Size 2,Pink Empty Gelatin Capsules,Hard Gelatin Empty Vacant Capsule
Ningbo Jiangnan Capsule Co., Ltd. , https://www.jncapsule.com