Larval crab cultivating pond and the cultivating method

Abstract

The invention relates to a Scylla serrata seed cultivating pool and relative method, in particular to a method for improving survival rate and growing seed Scylla serrata quickly. the invention comprises a main pool and a seed pool, wherein the bottom of th main pool is provided with a slope inclined along a water outlet, and a sand layer, the sand layer is provided with at least one groove extended from the high part to the lower part of the bottom of the main pool to be collected into the water outlet, the seed pool is arranged under the water outlet with a network box inside. The water specific weight is 1.006-1.015 while the seed cultivating density is 2000-3000n / m2, while the water is exchanged each day and the forge is fish slurry, shellfish meat, or the like to be fed for at least four times and 2-3 times of seed weight, and the whole cultivation is aerated continuously.

Description

technical field [0001] The invention relates to a breeding method for blue crabs, in particular to a method for improving the survival rate of young crabs of blue crabs and facilitating the emergence and sale of young crabs by adopting special facilities. Background technique [0002] The blue crab meat is delicious and nutritious, and it is an excellent marine cultured species. Blue crab farming has become a new marine industry. So far, the technology of artificial breeding of blue crabs is becoming more and more mature, but there are still few reports about the nutrition, salinity and temperature conditions of the breeding process of young crabs (Qiao Zhenguo. The scientific and technological progress of mud crab seedling cultivation. Ocean Fishery, 2005, 27 (2 ): 159-163), the breeding model of larvae still needs to be further improved. [0003] At present, there is a lack of special facilities for cultivating young crabs. The industry usually uses shrimp or fish nurser...

AI Technical Summary

Problems solved by technology

So far, the technology of artificial breeding of blue crabs is becoming more and more mature, but there are still few reports about the nutrition, salinity and temperature conditions of the breeding process of young crabs (Qiao Zhenguo. The scientific and technological progress of mud crab seedling cultivation. Ocean Fishery, 2005, 27 (2 ): 159-163), the breeding model of larvae still needs to be further improved

[0003] At present, there is a lack of special facilities for cultivating young crabs. The industry usually uses shrimp or fish nursery ponds for cultivation, but this kind of nursery ponds has the following two major disadvantages: ① Habitat environment: The young crabs live at the bottom of the sea, are ferocious and aggressive by nature, and kill each other. severe eating

The nursery pond with cement structure cannot provide the burial conditions required by the larvae. In addition, the bottom area of ​​the nursery pond is limited, which is not conducive to the survival of the larvae.

② Emergence facilities: Crab juveniles and food residues must be washed out together in the clearing pool for young crabs. The distance between the drain outlet of the nursery pond and the seedling ditch is too close, and there is a lack of a facility for separating young crabs and dirt. Mixed with dirt, it is difficult to separate

The entire emergence process took a lot of manpower and time, and caused mechanical damage and death of crab seedlings