Crab itch in the autumn wind, it is precisely the season when the crab matures in large numbers. Sihong farmers in order to take measures to raise the peak sales of crabs, most of them adopt cages to raise their holdings to delay listing, in order to achieve greater economic benefits. Of course, there are certain risks in the holding of crabs, such as the problem of mortality in temporary farming. Therefore, the author reminds the farmers who are preparing to raise the crabs to pay attention to the following points:
The first is the choice of time for the container. The time to catch the box is after the annual frost. If catching too early, the water temperature is still high, and the mortality rate after entering the box is high. Too late, because of the low temperature, the crab is not very active and it is not easy to arrest. The second is the choice of holding place. To choose a place where there is no pollution source and where the environment is relatively quiet, it is best that the roads are open and easy to transport. The third is the choice of water quality. According to many years of experience, the water quality is not as good as it can be. The water is too clear, the crabs in the box are not safe, and they can kill each other. Therefore, there must be a certain degree of transparency and water plants. Requires good water quality, transparency is about 40 --- 45cm. The fourth is the selection of crabs. Disease-free, full-strength crabs with a full range of activities. And female and male crabs are raised separately. The fifth is to clear the cage in time. It is to clean up those activities that are poor. In particular, the dead crabs should be cleared and buried in time. Sixth, feeding is to feed mainly small fish, shrimps, and snails. Every morning and afternoon, the fish is fed to the food table to ensure that the crab eats well.
In short, in the process of holding crabs, we must pay attention to timely observation, find problems and take appropriate measures in time, and do timely listing.
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