Method for cultivating cold-tolerant fry of Australia freshwater lobsters

Abstract

The invention belongs to the technical field of freshwater prawn cultivation, and discloses a method for cultivating cold-tolerant fry of Australia freshwater lobsters. The method includes the steps of performing seed lobster fattening in an outside pond, performing temperature control when seed lobsters enter a greenhouse in winter, and inducing synchronous mating with a light after the seed lobsters enter the greenhouse, wherein elodea canadensis is planted in the pond for cultivating the seed lobsters mainly to supplement calcium, phosphorus, crude fibers and various trace elements requiredfor the Australian freshwater lobsters; the temperature when the seed lobsters are transferred to the greenhouse in winter is reduced year by year; when the seed lobsters are transferred to the greenhouse, the temperature of the local environment where the seed lobsters are located is lowered by ice cubes, and then gradually raised until it is consistent with the temperature of the greenhouse; batch simultaneous mating is induced with the specific light. By adopting the method for continuously breeding the Australian freshwater lobsters, the Australian freshwater lobsters which have cold resistance and can overwinter under natural conditions in temperate regions can be selected and cultivated. By cultivating the cold-tolerant fry of the Australia freshwater lobsters cultivated by the method, the overwintering cost in winter can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of lobster culture, and in particular relates to a method for cultivating cold-resistant seedlings of Australian freshwater lobster. Background technique [0002] Australian freshwater lobster, native to Australia, can survive winter naturally in tropical regions, subtropical and temperate regions, and requires facilities to survive winter. The shrimp has been introduced and tested in Guangdong Province in recent years and has been successfully artificially propagated and farmed outside the city. At present, the domestic breeding scale is expanding day by day, and it has a good breeding prospect. [0003] However, in the subtropical and temperate regions, the artificial propagation and seed cultivation of the shrimp need a greenhouse to survive the winter, and the cost is relatively high. In order to fundamentally solve this problem, it is necessary to breed a cold-resistant Australian freshwater lobster. T...

AI Technical Summary

Problems solved by technology

[0007] (2) In the existing technology, Australian freshwater lobsters are not subjected to low-temperature stimulation cultivation in an outer pond environment lower than 5°C. Instead, they are transferred to a greenhouse when the water temperature in the outer pond is lower than 20°C. The environment for shrimp breeding is cooled

[0008] (3) In the existing technology, it is impossible to achieve simultaneous mating of shrimp species

[0010] Farmers cannot create effective conditions to induce simultaneous mating and reproduction of breeding shrimp

Even if you know how to control the simultaneous mating and reproduction of breeding shrimp, there is no professional technical means to ensure the survival rate of breeding shrimp in each link

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