Industrial circulating-water larva breeding method for freshwater shrimps in freshwater

Abstract

The invention discloses an industrial circulating-water larva breeding method for freshwater shrimps in freshwater. The industrial circulating-water larva breeding method adopts a parent breeding, larva hatching and larva breeding sectional type breeding mode and comprises the following steps: breeding parent freshwater shrimps in a system capable of realizing circulation of an aquaculture water body, wherein male parent freshwater shrimps and female parent freshwater shrimps are mixed and bred together until egg-carrying freshwater shrimps are formed after copulation and egg laying of the male parent freshwater shrimps and the female parent freshwater shrimps; screening the egg-carrying freshwater shrimps in different embryonic development periods, and placing the egg-carrying freshwatershrimps in the same or similar embryonic development periods together for breeding and hatching so as to obtain larvae, wherein the whole larva hatching stage is carried out in a system capable of realizing circulation of the aquaculture water body; when the larvae are in a floating state in 3-5 days after being hatched, stocking the larvae into a treated aquaculture pond for breeding with nutrients and water, wherein submerged plants are planted at the bottom part of the aquaculture pond for the larvae to inhabit and avoid enemies; and when the larvae are 1.5-2.0 cm long, separating the larvae into different ponds. The industrial circulating-water larva breeding method provided by the invention can improve the larva breeding quality of the freshwater shrimps; and the freshwater shrimps can appear on the market 2 months earlier.

Description

technical field

[0001] The invention relates to a method for cultivating seedlings of freshwater freshwater freshwater prawns in industrialized circulating water, and belongs to the technical field of macrobrachium seedling breeding. Background technique

[0002] Freshwater freshwater freshwater shrimp, also known as green shrimp, scientific name: Macrobrachium nipponense, is popular among consumers because of its delicious meat and rich nutrition, and is a traditional freshwater aquatic product in my country. Since the 1980s, the artificial breeding and breeding techniques of freshwater shrimp have been promoted in a large area, and it has become one of the main species of freshwater aquaculture in my country. As of 2017, the national freshwater shrimp farming output was 240,700 tons, and the direct sales output value was about 24 billion yuan. The annual output of Jiangsu Province is 113,900 tons (accounting for 47.32%), 49,400 tons (accounting for 20.52%) of Anhui Provin...

Examples

Embodiment 1

[0038] A kind of freshwater freshwater freshwater freshwater shrimp (Taihu Lake freshwater shrimp) industrialized circulating water seed cultivation method comprises the following steps:

[0039] (1) Parental cultivation: The broodstock cultivation stage is carried out in the industrialized circulating water system; the male broodstock and the female broodstock are mixed and cultivated until the two mate and lay eggs to form broodstock shrimp; the ratio of broodstock to be stocked is male: Female=1:3, the stocking amount is 110 / 100L water body; the volume of water body in each culture unit is 2 cubic meters, the average water depth is 1 meter, the system maintains the DO>4mg / L of the water body, and the water temperature is 23-25°C. The water circulates 13 times a day; the intelligent automatic bait feeding machine feeds high-quality feed, and the total feed amount is 5% of the total weight of the broodstock, and is fed twice a day, once in the morning and once in the evening, ...

Embodiment 2

[0043] A kind of freshwater freshwater freshwater freshwater shrimp (Taihu Lake freshwater shrimp) industrialized circulating water seed cultivation method comprises the following steps:

[0044] (1) Parental cultivation: The broodstock cultivation stage is carried out in the industrialized circulating water system; the male broodstock and the female broodstock are mixed and cultivated until the two mate and lay eggs to form broodstock shrimp; the ratio of broodstock to be stocked is male: Female=1:3, the stocking amount is 110 / 100L water body; the volume of water body in each culture unit is 1 cubic meter, the average water depth is 0.8 meter, the system maintains the DO>4mg / L of the water body, and the water temperature is 24-26°C. The water circulates 13 times a day; the intelligent automatic bait feeding machine feeds high-quality feed, and the total feed amount is 5% of the total weight of the broodstock, and is fed twice a day, once in the morning and once in the evening,...

Embodiment 3

[0048] A kind of freshwater freshwater freshwater freshwater shrimp (Taihu Lake freshwater shrimp) industrialized circulating water seed cultivation method comprises the following steps:

[0049] (1) Parental cultivation: The broodstock cultivation stage is carried out in the industrialized circulating water system; the male broodstock and the female broodstock are mixed and cultivated until the two mate and lay eggs to form broodstock shrimp; the ratio of broodstock to be stocked is male: Female=1:3, the stocking quantity is 110 / 100L water body; the volume of water body in each culture unit is 3 cubic meters, the average water depth is 1.2 meters, the system maintains the DO>4mg / L of the water body, and the water temperature is 20-25°C. The water circulates 11 times a day; the intelligent automatic bait feeding machine feeds high-quality feed, the total feed amount is 5% of the total weight of the broodstock, and the feed is fed twice a day, once in the morning and once in the...

technical field

[0001] The invention relates to a method for cultivating seedlings of freshwater freshwater freshwater prawns in industrialized circulating water, and belongs to the technical field of macrobrachium seedling breeding. Background technique

[0002] Freshwater freshwater freshwater shrimp, also known as green shrimp, scientific name: Macrobrachium nipponense, is popular among consumers because of its delicious meat and rich nutrition, and is a traditional freshwater aquatic product in my country. Since the 1980s, the artificial breeding and breeding techniques of freshwater shrimp have been promoted in a large area, and it has become one of the main species of freshwater aquaculture in my country. As of 2017, the national freshwater shrimp farming output was 240,700 tons, and the direct sales output value was about 24 billion yuan. The annual output of Jiangsu Province is 113,900 tons (accounting for 47.32%), 49,400 tons (accounting for 20.52%) of Anhui Provin...

Examples

Embodiment 1

[0038] A kind of freshwater freshwater freshwater freshwater shrimp (Taihu Lake freshwater shrimp) industrialized circulating water seed cultivation method comprises the following steps:

[0039] (1) Parental cultivation: The broodstock cultivation stage is carried out in the industrialized circulating water system; the male broodstock and the female broodstock are mixed and cultivated until the two mate and lay eggs to form broodstock shrimp; the ratio of broodstock to be stocked is male: Female=1:3, the stocking amount is 110 / 100L water body; the volume of water body in each culture unit is 2 cubic meters, the average water depth is 1 meter, the system maintains the DO>4mg / L of the water body, and the water temperature is 23-25°C. The water circulates 13 times a day; the intelligent automatic bait feeding machine feeds high-quality feed, and the total feed amount is 5% of the total weight of the broodstock, and is fed twice a day, once in the morning and once in the evening, ...

Embodiment 2

[0043] A kind of freshwater freshwater freshwater freshwater shrimp (Taihu Lake freshwater shrimp) industrialized circulating water seed cultivation method comprises the following steps:

[0044] (1) Parental cultivation: The broodstock cultivation stage is carried out in the industrialized circulating water system; the male broodstock and the female broodstock are mixed and cultivated until the two mate and lay eggs to form broodstock shrimp; the ratio of broodstock to be stocked is male: Female=1:3, the stocking amount is 110 / 100L water body; the volume of water body in each culture unit is 1 cubic meter, the average water depth is 0.8 meter, the system maintains the DO>4mg / L of the water body, and the water temperature is 24-26°C. The water circulates 13 times a day; the intelligent automatic bait feeding machine feeds high-quality feed, and the total feed amount is 5% of the total weight of the broodstock, and is fed twice a day, once in the morning and once in the evening,...

Embodiment 3

[0048] A kind of freshwater freshwater freshwater freshwater shrimp (Taihu Lake freshwater shrimp) industrialized circulating water seed cultivation method comprises the following steps:

[0049] (1) Parental cultivation: The broodstock cultivation stage is carried out in the industrialized circulating water system; the male broodstock and the female broodstock are mixed and cultivated until the two mate and lay eggs to form broodstock shrimp; the ratio of broodstock to be stocked is male: Female=1:3, the stocking quantity is 110 / 100L water body; the volume of water body in each culture unit is 3 cubic meters, the average water depth is 1.2 meters, the system maintains the DO>4mg / L of the water body, and the water temperature is 20-25°C. The water circulates 11 times a day; the intelligent automatic bait feeding machine feeds high-quality feed, the total feed amount is 5% of the total weight of the broodstock, and the feed is fed twice a day, once in the morning and once in the...

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