Tilapia is a well-to-do fish that is both dietary, hypoxic, and fertile. Tilapia is exported in large quantities with low production costs and large production volumes. Currently, it is one of the most internationally competitive varieties in China. Not only that, in order to better meet the needs of the international market, in recent years, many farmers have also launched a very strict pollution-free health culture. In this regard, the farmer of the Freshwater Research Institute of Shandong Province, Fu Peisheng put forward some of his own experience for your reference, the introduction of a simple and easy-to-understand, mainly focused on the current pollution-free fish breeding need to pay attention to the site selection, drug use, Fish breeding and other aspects. Fish farms, water quality, and drug use require the production of pollution-free fish. At the time of site selection, this fishery will not be as heavy as heavy metals, or heavy metals may not exceed the standard, followed by water sources that meet national water use standards for freshwater fisheries. In this regard, it is not difficult to do so as long as we strictly abide by the corresponding regulations of our country. In addition, pay attention to the regular adjustment of water quality. The conventional method is to use lime water to regulate water quality. Every two weeks, spilled at a concentration of 20ppm. In addition, 30 cm of old water should be drained every other week, and then 30 cm of fresh water should be added. In addition to these, every two weeks the staff also needs to take water samples from the aquaculture ponds and conduct complex tests in the laboratory to monitor changes in water quality at any time. Now we are engaged in pollution-free and healthy breeding, and we must also implement strict requirements for feed. Non-environmental pollution requires a green and environmentally friendly feed, and the quality of the raw material must be guaranteed when it comes to raw materials. The first is not deteriorating and relatively fresh. The second is to test each batch of raw materials to ensure stable quality. Fu Peisheng also analyzed the nutritional requirements of tilapia at different stages in different stages according to the conditions. According to the needs of a lot of formulas to ensure the healthy culture of fish. Unpolluted tilapia cultures should try to ensure their healthy growth and avoid drug use. However, it is impossible to be comprehensive at the time of farming. Therefore, it is necessary and safe to prepare some Chinese herbs. Chinese herbal medicine is mainly used for conditioning and prevention, and it can enhance immunity. Its greatest feature is its lack of toxic side effects and residues. It can effectively prevent the enteritis of tilapia. Grub, bleeding. Can replace chloramphenicol and other antibiotics. Like Coptis, Astragalus, Rhubarb, and Bupleurum, we are very familiar with Chinese herbal medicines with bactericidal and anti-inflammatory effects. These can be added to the feed during feed production, and can also be formulated with soups for splashing or mixing when the fish is infected. Feeding. The bait is best able to run regularly. Usually ten to half months, feeding once or twice, feeding method can Quanchiposa, or soaked with boiling water Quanchiposa. Fish breeding and stocking In addition to a qualified environment and good feed, healthy fingerlings are also an important aspect of ensuring pollution-free farming. In order to get healthy fish species, we must pay enough attention to the choice of broodstock. Some people, seed selection is not good, can not afford high-quality adult fish, often loss in front of the site, feed, disease prevention and control inputs. The fry is not good enough, and the disease resistance in the rearing process is also poor. It is easy to increase the difficulty and cost of breeding. Fu Peisheng’s choice of broodstock requires a body weight of more than one kilogram and ages of 2-6 years. This kind of broodstock will produce a healthy fish body that will be robust, and even if it has undergone multiple breeding, the seed quality will still be able to Guarantee. Fu Peisheng ponds stocked broodstock were sterilized with quicklime two months before stocking. A week later, the alkalinity disappeared. At this time, add water to about 1.5 meters. When stocking, the temperature of the water should not be less than 18 degrees Celsius. Disinfect it with salt before putting the broodstock into the pond. After stocking, watch the changes in the pool water and the activities of the broodstock, remove the sick fish, and start the aerator. More than 10 days after the broodstock went to the pool, you can see the fry. Wait a few days and when the fry can live independently, fish the fish fry and transfer it to a pond that specializes in cultivating fish. Feeding at this time is divided into breeding stages every 5 days. The first stage feeds soybean milk, and the second stage feeds are fed with compound feed. After each stage, the amount of feed is increased. When the fry grows to about 10 cm, it becomes a real fish species and can be transferred to adult fish ponds. We carried out commercial fish breeding. In order to ensure the survival rate, be careful to stop feeding for 2 days before reconstitution. At the same time, the water temperature of the adult fish pond must also be stable above 18°C. Before entering the pool, commercial fish species must first be disinfected with salt, and after entering the pool, do not feed the fish for the first two days. After two days, they can feed compound feed, and pay attention to regular feeding of baits or sprinkling of Chinese herbal medicine. To prevent the outbreak of the disease. In general, tilapia farming can be listed in 180-200 days
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