Breeding method for improving survival rate and yield of monopterus albus intercropped in net cage in crab pond

Abstract

The invention provides a breeding method for improving the survival rate and yield of monopterus albus intercropped in a net cage in a crab pond. The breeding method comprises the following steps of (1) selecting high-quality crab seeds, putting the crab seeds into the crab pond, erecting the net cage in the crab pond, and adjusting the feeding amount according to weather conditions and actual feeding conditions; (2) putting monopterus albus fries into the net cage, and putting the fries in the last ten-day period of June to the first ten-day period of July at the proper air temperature of 25DEG C to 33 DEG C, wherein the water temperature of the crab pond is appropriately over 28 DEG C; (3) feeding the monopterus albus fries according to a domestication method; and (4) culturing river crabs and the monopterus albus to October to November until the specifications of the river crabs and the monopterus albus reach the harvesting standard. According to the breeding method, a monopterus albus fry stocking technology and a monopterus albus feeding habit domestication technology are innovated, and the survival rate of the monopterus albus in boxes can reach 95% or above; and by means ofa feeding habit domestication method, the monopterus albus start-to-eat rate is high, the growth speed is high, and the multiplying power can reach 3-4 times.

Description

technical field [0001] The invention belongs to the technical field of freshwater culture, and in particular relates to a culture method for improving the survival rate and output of rice field eels nested in net cages in crab ponds. Background technique [0002] eel ( Monopterus albus ), also known as eel, squid without scales, etc., has attracted much attention as an emerging freshwater economic fish in my country because of its delicious meat and rich amino acids and vitamins. Due to artificial overfishing, excessive spraying of pesticides, and water pollution caused by industrialization, the wild resources of ricefield eels have been increasingly scarce, and some areas are on the verge of extinction. The development of artificial breeding of ricefield eels has broad prospects. [0003] The river crab breeding ponds are planted with Elodea, bitter grass, and Hydrilla verticillium, etc., and the ecological environment is good. In recent years, the ecological breeding of l...

AI Technical Summary

Problems solved by technology

[0005] But at present, there are following deficiencies in the prior art of raising rice field eels in net cages in crab ponds: the first, the survival rate of rice field eels in stocking is low, and the mortality rate even reaches more than 90%; the second, the opening rate of rice field eels is low, Seriously affect the output; third, the size of the crabs grown is small, and the economic benefits are low