Method for performing in situ breeding of cherax quadricarinatus through planting regions of paddy fields in slack winter season

Abstract

The invention discloses a method for performing in situ breeding of cherax quadricarinatus through planting regions of paddy fields in slack winter season. The method is characterized by comprising the steps of: performing drying in sunshine and disinfection on the paddy fields, charging water into the disinfected paddy fields, and stocking parents of which the specification is 50g / piece or above,wherein a ratio of male cherax quadricarinatus to female cherax quadricarinatus is 3:1 or 5:2; and planting water cabbages around 75% of periphery of the paddy fields, and feeding feeds twice in themorning and at dusk each day. According to the method disclosed by the invention, the parents are put in a metered-dose for breeding, the water cabbages are planted, and a sunshade net is built, so that temperature and illumination are accurately controlled; besides, through paving alligator alternanthera, increasing the survival rate of parent cherax quadricarinatus is facilitated; through cooperating with a superior feed and feeding time, influence on an antioxidant system of the parent cherax quadricarinatus is reduced, and gonadal development of the parents is promoted; through operationsof advance mating under dry field coercion and the like, the breeding efficiency and the contribution degree of the parent cherax quadricarinatus are increased; and besides, the superior feed can guarantee the survival rate of juvenile shrimps. Through the adoption of the method disclosed by the invention, the problems of difficult survival and late breeding parent cherax quadricarinatus are solved, besides, the survival rate of the juvenile shrimps is increased, and product gain is increased.

Description

technical field [0001] The invention relates to the field of breeding technology, in particular to a method for in situ breeding of red crayfish in a planting area of ​​a winter slack rice field. Background technique [0002] Red claw crayfish, also known as "Australian freshwater lobster", is native to Australia and looks like a lobster in the sea. It is one of the most valuable freshwater economic shrimp species in the world. The body color of this shrimp is brown-green, and there is a membranous bright red band on the top of the outer claw, which is beautiful and beautiful, so it is also known as red claw crayfish. [0003] In the existing technology, the number of parents put in is unreasonable, the temperature is too high, and the light area is too large, which leads to the low survival rate of the broodstock. The protein feed ratio and feeding time are likely to affect the antioxidant system of the broodstock and affect the gonads of the parents. The development of br...

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Problems solved by technology

[0003] In the existing technology, the number of parents put in is unreasonable, the temperature is too high, and the light area is too large, which leads to the low survival rate of the broodstock. The protein feed ratio and feeding time are likely to affect the antioxidant system of the broodstock and affect the gonads of the parents. The development of broodstock affects the breeding efficiency and contribution of broodstock. At the same time, the feed ratio is likely to cause a low survival rate of juvenile shrimp, which in turn affects the product income. Therefore, we propose a method of using the winter slack rice field planting area to grow red-clawed crayfish. The method of in situ breeding is used to solve the above problems

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