Method for breeding and hatching crayfish seedlings in tropical high-temperature region

Abstract

According to the method for breeding and hatching the crayfishes in the tropical high-temperature area, the pond is divided into the breeding pond and the breeding pond, sexual mature crayfishes are transferred into the breeding pond to be cultured in the parent crayfish breeding process, the crayfishes without egg carrying are transferred back to the breeding pond after fertilization is finished, interference of the crayfishes without egg carrying on breeding is avoided, and the breeding efficiency is improved. The breeding pond and the breeding pond are connected through the ditch, transfer of sexual maturity shrimps is facilitated, the breeding environment is synchronized, the environment change in the transfer process is reduced, a site can be provided for activities of the crayfishes, then the state of female crayfishes is adjusted by conducting shading treatment in the day and conducting illumination treatment at night, hatching of young crayfishes at night is promoted, and the survival rate of the crayfishes is increased. The young shrimps gradually adapt to the high-temperature environment, the newly hatched young shrimps are prevented from directly facing sunlight in the daytime, and the seedling rate is increased.

Description

technical field

[0001] The invention relates to the technical field of crayfish seedling cultivation, in particular to a method for breeding and hatching crayfish seedlings in tropical high-temperature regions. Background technique

[0002] Crayfish (scientific name: Procambarus clarkii) is an aquatic animal of the Crustacea, Decapod order, and Crayfish family. Also known as Procambarus clarkii, red crayfish and freshwater crayfish, it is a freshwater economical shrimp. Its food range includes aquatic plants, algae, aquatic insects, animal carcasses, etc. When food is scarce, it also kills each other. It is omnivorous and has a fast growth rate. With the characteristics of fast speed and strong adaptability, it has great competitive advantages. Crayfish is widely welcomed by people because of its delicious meat taste, and has become an important economic breeding species in my country in recent years.

[0003] Tropical high-temperature areas are hot and rainy, with an annu...

Examples

Embodiment 1

[0032] A method for breeding and hatching seedlings of crayfish in tropical high temperature areas, comprising the following steps:

[0033] (1) Pond preparation: the pond includes a culture pond and a breeding pond; the pond is provided with an aerator; the selection depth is a culture pond of 2.0m, and beside the culture pond, the depth of digging is a breeding pond of 1.5m; The breeding pond and the breeding pond are connected by a ditch; the ditch is 0.6m deep and 0.9m wide; after the pond is drained, the disinfectant is sprayed at a rate of 0.35mg / m 2 , build an anti-escape wall; after the disinfectant is spilled for 10 days, water is released, and water hyacinth and duckweed are planted in the pond (water hyacinth: duckweed=2:1), and the planting area is 24% of the pond area. Plant cattail grass and / or reeds on the edge of the escape wall at a planting density of 6 plants / m 2 ; Described disinfectant is by weight, 0.5g trichloroisocyanuric acid, 0.04g ascorbic acid, 0.9...

Embodiment 2

[0040] A method for breeding and hatching seedlings of crayfish in tropical high temperature areas, comprising the following steps:

[0041] (1) Pond preparation: the pond includes a breeding pond and a breeding pond; the pond is provided with an aerator; the selection depth is a breeding pond of 1.5m, and a breeding pond of 1m is dug and built next to the breeding pond; the breeding The pond and the breeding pond are connected by a ditch; the ditch is 0.5m deep and 0.8m wide; after the pond is drained, the disinfectant is sprayed at a rate of 0.27mg / m 2, build the anti-escape wall; 9 days after the disinfectant is sprayed, water is released, water hyacinth and / or duckweed are planted in the pond, the planting area is 20% of the pond area, cattail grass is planted on the edge of the pond and the anti-escape wall, and the planting density 5 plants / m 2 ; The disinfectant is by weight, 0.6g trichloroisocyanuric acid, 0.03g ascorbic acid, 0.7g tanshinone, 4g glycerin;

[0042] (...

Embodiment 3

[0048] A method for breeding and hatching seedlings of crayfish in tropical high temperature areas, comprising the following steps:

[0049] (1) Pond preparation: the pond includes a culture pond and a breeding pond; the pond is provided with an aerator; the selection depth is a culture pond of 2.0m, and beside the culture pond, the depth of digging is a breeding pond of 1.5m; The breeding pond and the breeding pond are connected by a ditch; the ditch is 0.6m deep and 0.9m wide; after the pond is drained, the disinfectant is sprayed at a rate of 0.35mg / m 2 , build an anti-escape wall; after the disinfectant is spilled for 10 days, water is released, and water hyacinth and duckweed are planted in the pond (water hyacinth: duckweed=2:1), and the planting area is 24% of the pond area. Plant cattail grass and / or reeds on the edge of the escape wall at a planting density of 6 plants / m 2 ; Described disinfectant is by weight, 0.5g trichloroisocyanuric acid, 0.04g ascorbic acid, 0.9...

technical field

[0001] The invention relates to the technical field of crayfish seedling cultivation, in particular to a method for breeding and hatching crayfish seedlings in tropical high-temperature regions. Background technique

[0002] Crayfish (scientific name: Procambarus clarkii) is an aquatic animal of the Crustacea, Decapod order, and Crayfish family. Also known as Procambarus clarkii, red crayfish and freshwater crayfish, it is a freshwater economical shrimp. Its food range includes aquatic plants, algae, aquatic insects, animal carcasses, etc. When food is scarce, it also kills each other. It is omnivorous and has a fast growth rate. With the characteristics of fast speed and strong adaptability, it has great competitive advantages. Crayfish is widely welcomed by people because of its delicious meat taste, and has become an important economic breeding species in my country in recent years.

[0003] Tropical high-temperature areas are hot and rainy, with an annu...

Examples

Embodiment 1

[0032] A method for breeding and hatching seedlings of crayfish in tropical high temperature areas, comprising the following steps:

[0033] (1) Pond preparation: the pond includes a culture pond and a breeding pond; the pond is provided with an aerator; the selection depth is a culture pond of 2.0m, and beside the culture pond, the depth of digging is a breeding pond of 1.5m; The breeding pond and the breeding pond are connected by a ditch; the ditch is 0.6m deep and 0.9m wide; after the pond is drained, the disinfectant is sprayed at a rate of 0.35mg / m 2 , build an anti-escape wall; after the disinfectant is spilled for 10 days, water is released, and water hyacinth and duckweed are planted in the pond (water hyacinth: duckweed=2:1), and the planting area is 24% of the pond area. Plant cattail grass and / or reeds on the edge of the escape wall at a planting density of 6 plants / m 2 ; Described disinfectant is by weight, 0.5g trichloroisocyanuric acid, 0.04g ascorbic acid, 0.9...

Embodiment 2

[0040] A method for breeding and hatching seedlings of crayfish in tropical high temperature areas, comprising the following steps:

[0041] (1) Pond preparation: the pond includes a breeding pond and a breeding pond; the pond is provided with an aerator; the selection depth is a breeding pond of 1.5m, and a breeding pond of 1m is dug and built next to the breeding pond; the breeding The pond and the breeding pond are connected by a ditch; the ditch is 0.5m deep and 0.8m wide; after the pond is drained, the disinfectant is sprayed at a rate of 0.27mg / m 2, build the anti-escape wall; 9 days after the disinfectant is sprayed, water is released, water hyacinth and / or duckweed are planted in the pond, the planting area is 20% of the pond area, cattail grass is planted on the edge of the pond and the anti-escape wall, and the planting density 5 plants / m 2 ; The disinfectant is by weight, 0.6g trichloroisocyanuric acid, 0.03g ascorbic acid, 0.7g tanshinone, 4g glycerin;

[0042] (...

Embodiment 3

[0048] A method for breeding and hatching seedlings of crayfish in tropical high temperature areas, comprising the following steps:

[0049] (1) Pond preparation: the pond includes a culture pond and a breeding pond; the pond is provided with an aerator; the selection depth is a culture pond of 2.0m, and beside the culture pond, the depth of digging is a breeding pond of 1.5m; The breeding pond and the breeding pond are connected by a ditch; the ditch is 0.6m deep and 0.9m wide; after the pond is drained, the disinfectant is sprayed at a rate of 0.35mg / m 2 , build an anti-escape wall; after the disinfectant is spilled for 10 days, water is released, and water hyacinth and duckweed are planted in the pond (water hyacinth: duckweed=2:1), and the planting area is 24% of the pond area. Plant cattail grass and / or reeds on the edge of the escape wall at a planting density of 6 plants / m 2 ; Described disinfectant is by weight, 0.5g trichloroisocyanuric acid, 0.04g ascorbic acid, 0.9...

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