Fish raisingFishCommon sense--how to know hunger and fullness in fish raising

Fish raising is good or bad , is directly related to the quality of eating, and it can also be said that feed can be converted into fish production. If you are half-starved or starved for a long time, it will cause the fish to lose weight, reduce the resistance, and eventually lead to growth stagnation and death.         Data show that carp loses 17.2% of body weight in 12 days, loses the ability to eat and die in 38 days   . After the author’s colleague distributed a few kilograms of crucian carp at the end of the year, it was stored in the toilet tank. After 22 days, only a skeleton was left. The author was responsible for the design and construction of a fish farm. In the diversion ditches of more than 200 square meters, only 30 kilograms were caught at the end of the year because they were not fed, and the specifications were not much different at the same time. It can be seen that the fish cannot get food, and the consequences of long-term starvation are serious!        I. How to identify hunger and fullness?       1. It is normal to eat within 3 hours. If it is less than 3 hours and only about 2 hours after eating, it means that the feeding is insufficient, and some fish have not eaten or are full, and should be increased in the next feeding; if it is extended to 4 hours and the fish has left the feeding Field, indicating that there is more than enough to eat, the next time can be reduced as appropriate.        2. Look at the growth of the fish. After the fish starts to eat in April and May, the food increases day by day (in February and March, the fish is still small and uneaten, and the water temperature is also Low, no need to identify hunger and fullness), in the feeding plan of a week or ten days, it depends on the changes between the beginning of the week and the weekend or the beginning of the ten days and the end of the ten days. If the amount of the fish is the same every day, and it is eaten within 2 hours on the weekend or the end of the ten-day period, it means that the weight of the fish has increased, the food intake is large, and the fish is not full. Until the start of fishing in November, this method can be used to identify whether the fish are hungry or full.        3. Watch the movement of the water surface If the fish are not sick and move frequently on the water surface, this is a sign of hunger. On the contrary, they will dive into the water when they are full. In particular, the fry are swimming wildly on the water, which is a sign of severe hunger, commonly known as horse race disease. They must be fed immediately to block the wild swimming, otherwise a large number of deaths will occur. As for the plankton-based flowers and silver carp, you can observe whether the water is fat or thin to determine whether you are hungry. When the water quality is thin, it means that the number of plankton is small, and fertilization should be used to cultivate plankton; when the plankton increases and the water quality is too fertilized and too concentrated, the method of changing the water to adjust and diluting the water quality should be adopted to solve the problem. If necessary, put medicines to kill plankton, make the water clear and thin, and then fertilize and cultivate. Otherwise, water blooms will cause dead fish in pan-ponds.          Feeding and mastering the four fixed principles can effectively prevent the fish from being too hungry and too full. Four determinations are timing, quantification, positioning, and quality. Some contractors often only focus on the head of the field during busy farming season, and some do not eat for a few days; some concentrate on a spot less than 10 square meters, resulting in uneven eating and growth of fish; some do not keep the feed strictly. , after being moldy, they are directly fed without treatment; some have what to do, how many do they do, and they don't do it if they don't. The fish proverb says stop eating for one day and grow white for three days, and the above methods are not good for raising fish. And feeding more, not only wastes bait, increases expenses, but also makes fish sick. Like grass carp, it will die from gluttony. Therefore, farmers must learn to recognize the hunger of fish