Method for rearing parent fishes of ictalurus punctatus

Abstract

The invention discloses a method for rearing parent fishes of ictalurus punctatus. The method comprises the following steps of (1) selecting high-quality parent fishes and putting the high-quality parent fishes into a breeding pond; (2) after the parent fishes are stocked for 5-10 days, starting breeding and feeding, and using fresh fish blocks for feeding from 30 days before spawning of the parent fishes to the breeding period; (3) during the breeding period of the parent fishes, inspecting the activity conditions of the parent fishes late night every day, and when it is found that the parent fishes have chasing reactions on the water surface, putting artificial fish nests into the pond for the parent fishes to lay eggs; and (4) taking out egg masses in the artificial fish nests, putting the egg masses into a water basin filled with pond water, and feeding the egg masses into a hatching room for hatching under the condition of avoiding direct sunlight. The technology for rearing the parent fishes of the ictalurus punctatus is simple and easy to operate, has good promotion effects on optimizing the breeding process, reducing the labor amount and improving the survival and reproductive capacity of the parent fishes, and has good economic benefits and social benefits.

Description

technical field

[0001] The invention belongs to the technical field of aquaculture, in particular to a method for cultivating channel catfish broodstock. Background technique

[0002] Aquaculture is one of the important pillar industries in my country's fishery field. At present, most economic fish in my country are mainly cultivated in ponds, but they are already facing the pressure of structural optimization and technological upgrading. In terms of production efficiency, resource utilization, and environmental Protection and other aspects need to be improved urgently, and the active promotion of factory farming systems meets the requirements for intensification and sustainable development of the aquaculture industry.

[0003] Channel catfish is a high-quality freshwater fish that is easy to breed, high in yield, good in profit, delicious in meat, free of intermuscular spines, and easy to process. It has the characteristics of fast growth, wide temperature range, and strong ...

Examples

Embodiment 1

[0026] A method for cultivating channel catfish broodstock, comprising the following steps:

[0027] (1) Select channel catfish with well-developed gonads and a weight of 1.5-2kg as broodstock, and put them in the breeding pond. The ratio of male to female of the broodstock is adjusted according to the breeding method. If natural reproduction is used, the ratio of male to female is 1:1. The way of artificial aphrodisiac and artificial insemination is to raise male and female separately. The pond where broodstock is raised controls the density of broodstock to be 4 square meters and puts 1 tail. The total amount of stocking is controlled at 230-240 kg / mu. After 10 days, after testing the water to be non-toxic, the broodstock can be stocked after being soaked in 50g / L salt water for 5 minutes. When the broodstock is stocked, 40 silver carp and bighead carp can be mixed at the same time;

[0028] (2) Cultivate and feed the parent fish after 7 days of stocking. The average daily f...

Embodiment 2

[0032] A method for cultivating channel catfish broodstock, comprising the following steps:

[0033] (1) Select channel catfish with well-developed gonads and a weight of 1.5-2kg as broodstock, and put them in the breeding pond. The ratio of male to female of the broodstock is adjusted according to the breeding method. If natural reproduction is used, the ratio of male to female is 1:1. The way of artificial aphrodisiac and artificial insemination is to raise male and female separately. The pond where broodstock is raised controls the density of broodstock to be 4 square meters and puts 1 tail. The total amount of stocking is controlled at 225-240 kg / mu. After 10 days, after testing the water to be non-toxic, the broodstock can be stocked after being soaked in 50g / L salt water for 5 minutes. When the broodstock is stocked, 30 silver carp and bighead carp can be mixed at the same time;

[0034] (2) Cultivate and feed the parent fish after 5 days of stocking. The average daily f...

Embodiment 3

[0038] A method for cultivating channel catfish broodstock, comprising the following steps:

[0039] (1) Select channel catfish with well-developed gonads and a weight of 1.5-2kg as broodstock, and put them in the breeding pond. The ratio of male to female of the broodstock is adjusted according to the breeding method. If natural reproduction is used, the ratio of male to female is 1:1. The way of artificial aphrodisiac and artificial insemination is to raise male and female separately. The pond where broodstock is raised controls the density of broodstock to be 5 square meters and puts 1 tail. The total amount of stocking is controlled at 240-250 kg / mu. After 10 days, after testing the water to be non-toxic, the broodstock can be stocked after being soaked in 50g / L salt water for 5 minutes. When the broodstock is stocked, 50 silver carp and bighead carp can be mixed at the same time;

[0040](2) After 10 days of stocking, the broodstock will be cultivated and fed. The average...

technical field

[0001] The invention belongs to the technical field of aquaculture, in particular to a method for cultivating channel catfish broodstock. Background technique

[0002] Aquaculture is one of the important pillar industries in my country's fishery field. At present, most economic fish in my country are mainly cultivated in ponds, but they are already facing the pressure of structural optimization and technological upgrading. In terms of production efficiency, resource utilization, and environmental Protection and other aspects need to be improved urgently, and the active promotion of factory farming systems meets the requirements for intensification and sustainable development of the aquaculture industry.

[0003] Channel catfish is a high-quality freshwater fish that is easy to breed, high in yield, good in profit, delicious in meat, free of intermuscular spines, and easy to process. It has the characteristics of fast growth, wide temperature range, and strong ...

Examples

Embodiment 1

[0026] A method for cultivating channel catfish broodstock, comprising the following steps:

[0027] (1) Select channel catfish with well-developed gonads and a weight of 1.5-2kg as broodstock, and put them in the breeding pond. The ratio of male to female of the broodstock is adjusted according to the breeding method. If natural reproduction is used, the ratio of male to female is 1:1. The way of artificial aphrodisiac and artificial insemination is to raise male and female separately. The pond where broodstock is raised controls the density of broodstock to be 4 square meters and puts 1 tail. The total amount of stocking is controlled at 230-240 kg / mu. After 10 days, after testing the water to be non-toxic, the broodstock can be stocked after being soaked in 50g / L salt water for 5 minutes. When the broodstock is stocked, 40 silver carp and bighead carp can be mixed at the same time;

[0028] (2) Cultivate and feed the parent fish after 7 days of stocking. The average daily f...

Embodiment 2

[0032] A method for cultivating channel catfish broodstock, comprising the following steps:

[0033] (1) Select channel catfish with well-developed gonads and a weight of 1.5-2kg as broodstock, and put them in the breeding pond. The ratio of male to female of the broodstock is adjusted according to the breeding method. If natural reproduction is used, the ratio of male to female is 1:1. The way of artificial aphrodisiac and artificial insemination is to raise male and female separately. The pond where broodstock is raised controls the density of broodstock to be 4 square meters and puts 1 tail. The total amount of stocking is controlled at 225-240 kg / mu. After 10 days, after testing the water to be non-toxic, the broodstock can be stocked after being soaked in 50g / L salt water for 5 minutes. When the broodstock is stocked, 30 silver carp and bighead carp can be mixed at the same time;

[0034] (2) Cultivate and feed the parent fish after 5 days of stocking. The average daily f...

Embodiment 3

[0038] A method for cultivating channel catfish broodstock, comprising the following steps:

[0039] (1) Select channel catfish with well-developed gonads and a weight of 1.5-2kg as broodstock, and put them in the breeding pond. The ratio of male to female of the broodstock is adjusted according to the breeding method. If natural reproduction is used, the ratio of male to female is 1:1. The way of artificial aphrodisiac and artificial insemination is to raise male and female separately. The pond where broodstock is raised controls the density of broodstock to be 5 square meters and puts 1 tail. The total amount of stocking is controlled at 240-250 kg / mu. After 10 days, after testing the water to be non-toxic, the broodstock can be stocked after being soaked in 50g / L salt water for 5 minutes. When the broodstock is stocked, 50 silver carp and bighead carp can be mixed at the same time;

[0040](2) After 10 days of stocking, the broodstock will be cultivated and fed. The average...