Fish is a temperature-changing animal. From July to September, high temperatures and suitable water temperatures are the long-term and long-term survival of adult fish, and also the peak period of fish diseases. How to seize this golden season of production and feed on the adult fish science to prevent diseases? The fish farmers must pay attention to the following four key measures. First, we must do a good job of scientific feeding and let the fish eat well. As the saying goes, "I don't feed for three days a day." For this issue, many fish farmers do not have a good understanding. In the feeding of bait, it is dispensable, but it is often absent. Most of the adults are hungry, causing the fish to grow abnormally, with many diseases and low yields. Then, how do you make a good scientific contribution to adult fish? In this issue, we must make a fuss about the "four rules." When feeding regularly, feed regularly every day. Generally it is advisable to use 9 to 10 o'clock in the morning or 2 to 3 o'clock in the afternoon. It is necessary to strictly control the feeding and feeding of night food when the fish floats in the morning. Otherwise, after nighttime fish are full, they will increase their breathing and reduce oxygen in the pool. Especially when feeding duckweed, do not cover the water overnight. In the past, when many farmers fed duckweed, the ponds were filled with water, resulting in dead fish in the pond due to lack of oxygen after the fish were full. When positioning feeding, it is best to feed in a fixed place. If conditions permit, food courts can be set up to observe fish eating conditions so that fish can be fed with appropriate food. The feeds should be fresh and not fed with moldy baits. When quantitative feeding, keep a certain amount, and determine the amount of feed based on the total amount of fish ponds. In the variety of bait, we must adhere to the rough and coarse matching, use rough generations, use grass to fish, and reduce costs. During the summer season, grass carp and squid prefer to eat cold water plants. If they can feed normally during this period, grass-eating fish will grow fast and yield high. The majority of fish farmers should make full use of aquatic resources, which will not only reduce the cost of breeding but also increase the yield of adult fish. Second, we must strengthen the prevention and treatment of fish diseases, so as to prevent the main summer season is the fish disease season, especially grass carp bleeding, gills, enteritis and other diseases are more common. Mortality after the onset is high and losses are high. Many mariculturists often neglect prevention, and it is not good if the fish is used after the illness. Some farmers also mistakenly believe that the newly excavated fish ponds and the washed fish ponds do not need to be controlled by drugs. At present, according to our survey, most ponds that have been cleared and ponds that have been newly excavated will also have widespread disease and dead fish. Therefore, fish farmers must adhere to the principle of prevention and prevention. Here are some recipes for good medicine that have been used for years. 1. Quicklime: generally use 15kg quicklime per acre per meter water depth, splashed with Quanchipu after watering. 2. Bleaching powder: 0.75 kg water per mu per metre, splashed with Quanchipu. How to use: The above two drugs can be used interchangeably. If you use one drug at a time, use it once a month. Medication time, usually from 3 pm to 4 pm is appropriate. It should be noted that when fish floats, do not use medication. Because the fish floats at the time of an anoxic period in the pond, if the medication is used at this time, the pool water concentration will be increased, and the suffocation of fish will be accelerated. Starting from improving water quality, relying on the physicochemical action of quicklime in the pond, quickly increase the pH, neutralize acidity, clarify the water quality, and use the bleaching powder to kill the insects in the bud. Third, we must strengthen the morning and evening patrol ponds to prevent dead fish pond summer season, stifling hot thunderstorms and more weather, fish often because of water quality, the weather is hot and lack of oxygen floating head, such as a little carelessness, it will cause dead fish ponds. The floating head of the fish has a light weight. Generally, floating heads begin to float in the morning and floating heads begin to float at midnight. In the middle of the pond, the floating head is a frivolous head and the development of the four sides is heavy. When you hear footsteps, you sink lighter. Those who do not sink are heavy. If it is found that serious floating heads should immediately take oxygenation measures, new oxygen-free equipment should immediately be filled with new water. Fourth, to arrest the rotation, increase the adult fish production to increase the output of adult fish, increase the effectiveness must be well-rounded. First of all, it is necessary to control the amount of fish contained in adult fish ponds. When you exceed or reach a certain number, you must adhere to the wheel rotation. Fishing is best done when the fish do not float in the morning. When fishing, the action must be quick, fast, fast, and small. After fishing, a certain amount of fish should be added in time to lay a good foundation for the cultivation of enough large-sized fish species in the next year.
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