CN102187837A - Industrially breeding method of macrobrachium nipponense - Google Patents

Abstract

The invention provides an industrially breeding method of macrobrachium nipponense, comprising the steps of: selection of parent macrobrachium of macrobrachium nipponense, cultivation of fingerlings, treatment of fingerling cultivation water quality, daily cultivation management in the breeding period and the like. By use of the industrially breeding method of macrobrachium nipponense, provided by the invention, the cultured macrobrachium nipponense fingerlings have high survival rate and stable quality. According to the industrially breeding method disclosed by the invention, the problems of low survival rate and unstable quality in the conventional macrobrachium nipponense breeding process can be solved, and the economic loss of the macrobrachium culturists can be reduced.

Description

A kind of Japanese macrobrachium supernbum factorial seedling-culturing method

Technical field

The present invention relates generally to the method for shrimps genetic breeding., particularly relate to a kind of a kind of method of Japanese macrobrachium supernbum factorial seedling growth.

Background technology:

Japanese macrobrachium supernbum has another name called freshwater shrimp, it is the main fresh water shrimp veriety that present China cultures, because the freshwater shrimp natural resources reduces day by day, the market price rises year by year, and the seedling great majority of freshwater shrimp are that Tu Chi cultivates at present, cause the seedling emergence rate low, the quality instability survives rate variance in the process of growth, problem that growth rate is slow or the like, therefore, press for a kind of new freshwater shrimp factorial seedling growth mode.

Summary of the invention:

The invention provides a kind of a kind of method of Japanese macrobrachium supernbum factorial seedling growth, it is low that the inventive method has overcome the seedling emergence rate that exists in the existing breeding method, the quality instability, and survival rate is not high in the process of growth, the defective that growth rate is slow.

The present invention adopts following technical scheme for achieving the above object:

A kind of Japanese macrobrachium supernbum factorial seedling-culturing method is characterized in that may further comprise the steps:

(1) selection of close shrimp storage pond, holding pond and processing: selecting a plurality of areas is 250-350m ², the dark 1.5-1.8m in pond Tu Chi as close shrimp storage pond, holding pond, will put into the pond through the water that 70-80 mesh sieve thin,tough silk is crossed filtration, pond depth of water 1.5m, one in aerator is joined in each pond, four jiaos of the pond waters surface are placed the screen cloth that water peanut and bamboo bar pricked and are made things concealed;

(2) close shrimp is chosen: the size of selecting in the different water systems is even, and energetic, healthy female, male shrimp is as close shrimp, more than the long 3.5cm of female shrimp body; More than the long 4cm of male shrimp body;

(3) the raising preliminary treatment of close shrimp: female, the male shrimp of the same water system that step (2) is chosen separately then, with the female shrimp and the male shrimp of different water systems, is put into same close shrimp storage pond, holding pond and raises;

(4) close shrimp is raised: every morning and afternoon respectively throw something and feed once, and the manufactured feed of throwing something and feeding the morning accounts for the 2-3% that raises close shrimp body weight, and the fresh small fish of throwing something and feeding afternoon accounts for the 3-4% that raises close shrimp body weight; Add fresh water 30-55m every day in the pond ³

(5) nursery pond requires: the indoor cement pit of selecting 3m * 4m * 1.2m is laid gas stone as nursery pond in the pond, gas stone density is 8-10/m2, and the nursery pond top covers movably puggaree, is used to regulate illumination;

(6) nursery pond water quality is handled: before the beginning of growing seedlings, need nursery pond is sterilized completely, will pass through fine sand again through behind the 80 order nets, the water behind the activated carbon filtration enters the nursery pond of sterilizing, and water level is used 30 milliliters/meter after reaching requirement again ³Formalin was handled water for larval nursing 22-26 hour, and then aeration 2-3 days, added chitin at last, made that concentration reaches 0.8-1 gram/rice in its pool water within ³

(7) observe the mating of close shrimp: the mating situation of routine observation parent shrimp storage pond, holding pond Prawn, behind female shrimp oogenesis, check ovum grain developmental state, when ovum grain bleach, move into nursery pond, close shrimp goes into before the pond with 20 milliliters/meter ³Betagen Solution soaked 1-2 minute;

(8) larval culture: after the female shrimp ovulation, shift out nursery pond, the hatching density of ovum should not be too high, is generally 30 * 10 ⁴Grain～80 * 10 ⁴Grain/rice ³, when the young during at I～III phase zoea, based on the unit cell algae; When the young grows into IV～VII during the phase, based on wheel animalcule, every tail prawn young is thrown something and fed 20～100/day, and throw something and feed 7-9 every day;

(9) daily management of nursery pond: change water 2-5m every day ³, keep water body pH 7.8～8.6, more than dissolved oxygen 4 mg/litre, below chemical oxygen consumption (COC) 5 mg/litre, below total ammonia nitrogen 0.5 mg/litre, below nitrite 0.1 mg/litre, use effective microorganism preparation to make water quality keep good.

Beneficial effect of the present invention:

Adopt Japanese macrobrachium supernbum factorial seedling-culturing method of the present invention to grow seedlings, shrimp survival rate of seedling height, cultivate shrimp seed steady quality, it is low to have overcome in the present Japanese macrobrachium supernbum seedling raising process survival rate, the unsettled difficult problem of quality, solve the nonsynchronous problem of growth of the freshwater shrimp young in the seedling rearing in earth ponds simultaneously, reduced the economic loss of foster shrimp dealer.

Embodiment

A kind of Japanese macrobrachium supernbum factorial seedling-culturing method may further comprise the steps:

(1) selection of close shrimp storage pond, holding pond and processing: selecting a plurality of areas is 300m ², the dark 1.5m in pond Tu Chi as close shrimp storage pond, holding pond, will put into the pond through the water that 80 mesh sieve thin,tough silk are crossed filtration, one in aerator is joined in each pond, four jiaos of the pond waters surface are placed the screen cloth that water peanut and bamboo bar pricked and are made things concealed;

(2) close shrimp is chosen: the size of selecting in the different water systems is even, and energetic, healthy female, male shrimp is as close shrimp, more than the long 3.5cm of female shrimp body; More than the long 4cm of male shrimp body;

(3) the raising preliminary treatment of close shrimp: female, the male shrimp of the same water system that step (2) is chosen separately then, with the female shrimp and the male shrimp of different water systems, is put into same close shrimp storage pond, holding pond and raises;

(4) close shrimp is raised: every morning and afternoon respectively throw something and feed once, and the manufactured feed of throwing something and feeding the morning accounts for raises 2% of close shrimp body weight, and the fresh small fish of throwing something and feeding afternoon accounts for raises 4% of close shrimp body weight; Add fresh water 35m every day in the pond ³:

(5) nursery pond requires: the indoor cement pit of selecting 3m * 4m * 1.2m is laid gas stone as nursery pond in the pond, gas stone density is 9/m2, and the nursery pond top covers movably puggaree, is used to regulate illumination;

(6) nursery pond water quality is handled: before the beginning of growing seedlings, need nursery pond is sterilized completely, will pass through fine sand again through behind the 80 order nets, the water behind the activated carbon filtration enters the nursery pond of sterilizing, and water level is used 30 milliliters/meter after reaching requirement again ³Formalin was handled water for larval nursing 24 hours, and then aeration 2 days, added chitin at last, made that concentration reaches 0.8-1 gram/rice in its pool water within ³

(7) observe the mating of close shrimp: the mating situation of routine observation parent shrimp storage pond, holding pond Prawn, behind female shrimp oogenesis, check ovum grain developmental state, when ovum grain bleach, move into nursery pond, close shrimp goes into before the pond with 20 milliliters/meter ³Betagen Solution soaked 1 minute;

(8) larval culture: after the female shrimp ovulation, shift out nursery pond, the hatching density of ovum should not be too high, is generally 30 * 10 ⁴Grain～80 * 10 ⁴Grain/rice ³, when the young during at I～III phase zoea, based on the unit cell algae; When the young grows into IV～VII during the phase, based on wheel animalcule, every tail prawn young is thrown something and fed 20～100/day, throws something and feeds every day 8 times;

(9) daily management of nursery pond: change water 3m every day ³, keep water body pH 7.8～8.6, more than dissolved oxygen 4 mg/litre, below chemical oxygen consumption (COC) 5 mg/litre, below total ammonia nitrogen 0.5 mg/litre, below nitrite 0.1 mg/litre, use effective microorganism preparation to make water quality keep good.

Employing the inventive method is grown seedlings, and the survival rate of shrimp seedling brings up to 37% by 10% of traditional seedling rearing in earth ponds, has solved the nonsynchronous problem of growth of the freshwater shrimp young in the seedling rearing in earth ponds simultaneously.

Claims (1)

1. Japanese macrobrachium supernbum factorial seedling-culturing method is characterized in that may further comprise the steps:

(1) selection of close shrimp storage pond, holding pond and processing: selecting a plurality of areas is 250-350m ², the dark 1.5-1.8m in pond Tu Chi as close shrimp storage pond, holding pond, will put into the pond through the water that 70-80 mesh sieve thin,tough silk is crossed filtration, pond depth of water 1.5m, one in aerator is joined in each pond, four jiaos of the pond waters surface are placed the screen cloth that water peanut and bamboo bar pricked and are made things concealed;

(2) close shrimp is chosen: the size of selecting in the different water systems is even, and energetic, healthy female, male shrimp is as close shrimp, more than the long 3.5cm of female shrimp body, more than the long 4cm of male shrimp body;

(3) the raising preliminary treatment of close shrimp: female, the male shrimp of the same water system that will choose separately then, with the female shrimp and the male shrimp of different water systems, is put into same close shrimp storage pond, holding pond and raises;

(4) close shrimp is raised: every morning and afternoon respectively throw something and feed once, and the manufactured feed of throwing something and feeding the morning accounts for the 2-3% that raises close shrimp body weight, and the fresh small fish of throwing something and feeding afternoon accounts for the 3-4% that raises close shrimp body weight; Add fresh water 30-55m every day in the pond ³

(5) nursery pond requires: the indoor cement pit of selecting 3m * 4m * 1.2m is laid gas stone as nursery pond in the pond, gas stone density is 8-10/m2, and the nursery pond top covers movably puggaree, is used to regulate illumination;

(6) nursery pond water quality is handled: before the beginning of growing seedlings, need nursery pond is sterilized completely, will pass through fine sand again through behind the 80 order nets, the water behind the activated carbon filtration enters the nursery pond of sterilizing, and water level is used 30 milliliters/meter after reaching requirement again ³Formalin was handled water for larval nursing 22-26 hour, and then aeration 2-3 days, added chitin at last, made that concentration reaches 0.8-1 gram/rice in its pool water within ³

(7) observe the mating of close shrimp: the mating situation of routine observation parent shrimp storage pond, holding pond Prawn, behind female shrimp oogenesis, check ovum grain developmental state, when ovum grain bleach, move into nursery pond, close shrimp goes into before the pond with 20 milliliters/meter ³Betagen Solution soaked 1-2 minute;

(8) larval culture: after the female shrimp ovulation, shift out nursery pond, the hatching density of ovum should not be too high, is generally 30 * 10 ⁴Grain～80 * 10 ⁴Grain/rice ³, when the young during at I～III phase zoea, based on the unit cell algae; When the young grows into IV～VII during the phase, based on wheel animalcule, every tail prawn young is thrown something and fed 20～100/day, and throw something and feed 7-9 every day;

(9) daily management of nursery pond: change water 2-5m every day ³, keep water body pH 7.8～8.6, more than dissolved oxygen 4 mg/litre, below chemical oxygen consumption (COC) 5 mg/litre, below total ammonia nitrogen 0.5 mg/litre, below nitrite 0.1 mg/litre, use effective microorganism preparation to make water quality keep good.