Advantages of hairy crab releasing crab seedlings in winter

In recent years, hairy crab production has developed rapidly, and many farmers take it for granted that spring is more suitable for hairy crab seedlings, but in fact, the advantages of hairy crab seedlings in winter are mainly reflected in the following aspects.

Cheap

The period from mid-October to mid-November is the period when a large number of crab seedlings are caught, transferred to the pool to survive the winter and sold. During this period, the price is low, usually about 1 yuan each, while in spring, the price of each crab seedling is up to 2 yuan ~ 3 yuan.

Transportation safety

The newly caught crab seedlings are rich in fat, strong physique, strong adaptability and resistance, and at this time the temperature difference between the north and the south is only 5 ℃ ~ 10 ℃, the air humidity is large, it is easy to operate, the management is simple, and the transportation is safe and reliable; while the crab seedlings after overwintering are weak, poor resistance, coupled with the large temperature difference between the north and the south, easy to suffer from a variety of diseases, low transport survival rate, and higher transport conditions.

High survival rate

In winter, due to the clean water quality and the weakening of bacterial and viral activity, the chances of crab seedlings being infected by various bacteria are reduced, while in spring, crab seedlings are invaded by a variety of bacteria and reduce the survival rate.

Long growing period

The growth period of spring crab seedlings is only more than 6 months, except for the adaptation period, the growth period is shorter, the individual is small and the yield is low. Putting crab seedlings in winter can generally prolong the effective growth period of 1 ~ 2 months, which has a significant effect on increasing specification, increasing yield and increasing benefit.