What should you watch out for in winter crabs?
Raising crabs in the winter is beneficial to staggering the season of listing and marketing and raising the market price of crabs so as to obtain the best economic benefits. Here are some suggestions:
1. Pond requirements: 5-10 acres, pool water level is maintained at 1.5 meters or more, good water source, convenient drainage system, pool watertight, pool surface width 2-3 meters, pool bottom sludge less than 15 cm. 10 days before entering the pool, river crabs clear the pond with quick lime, and after 7 days water is stocked. The crabs were bred in pools before entering the pool.
2.Quality and Quantity Requirements: The cultivated crabs need to be free of disease, injury, complete appendages, and strong individuals. The individual specifications are about 120 grams, 500-600 kilograms per mu, and the pond needs to put aquatic peanuts, black leaf algae and other aquatic Plants and appropriate amount of snails to keep crabs from falling out during feeding.
3, daily management requirements:
(1) Water quality management: The crabs like the fresh water environment. During the cultivation, they should maintain a certain water level. Adjust the water exchange volume according to the size of the pool water and the capacity of inflow and outflow, the transparency is about 40 centimeters, and the ph value is between 7.5-8.5. Dissolved oxygen was maintained at 5 mg/l.
(2) Feed feeding: Feeding mainly animal feed, supplemented by vegetable feed, among which animal feed accounts for 60-70% of the total feed. When the water temperature is higher than 10°C, the daily feed is heavy. About 10% of it is fed in two batches, with 30-40% of the total daily amount in the morning and 60-70% in the afternoon. When the water temperature is lower than 10°C, the amount of bait is reduced by 3-5% until it stops feeding during hibernation.
(3) Inspection of the patrol pond: Check the water level. Maintain good water quality and adequate dissolved oxygen. Secondly, check the activity, feed it properly, ensure that it is eaten and eat well, and remove spoilage food in a timely manner to keep the water fresh.
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