CN103918592A - Crucian fry cultivation method - Google Patents

Abstract

The invention belongs to the field of cultivation, in particular to a crucian fry cultivation method. The method comprises the following steps that (1) breeding and egg laying are carried out; (2) eggs are put into a hatching pond to carry out even hatching, oxygenation bars are arranged on the edge of the hatching pond, the oxygenation bars are arranged on the bottom of the hatching pond after crucian fry come out of membranes, and the crucian fry are cultivated; (3) pond cleaning is carried out by using pond cleaning chemicals, water injection and fertilizing are carried out three days later, and the crucian fry are put into the pond when the color of the pond water is cultivated into yellow green; (4) the crucian fry are contained in oxygen bags before being put into the pond, the crucian fry are put in the pond water for carrying out buffering, and then the crucian fry are put into net cages; (5) milk powder and yolk are used as bait to carry out breeding; (6) pulverized fodder is started to be supplied after twelve days. Through the crucian fry cultivation method, the density of the eggs is adjusted through the positions of the oxygenation bars, the amount of labor is reduced, fry cultivation cost is lowered, and economic benefit is increased.

Description

A kind of crucian seedling-cultivating method

Technical field

The invention belongs to cultivation field, be specifically related to a kind of crucian seedling-cultivating method.

Background technology

Its delicious flavour of crucian, fine and tender taste, nutritious.According to one's analysis, in every hectogram crucian meat, containing 18.4 grams, protein, 2.9 grams, fat, vitamin B1, A, C content are all higher than other fish.In addition, crucian property is flat, taste is sweet, enter liver spleen kidney, pharmaceutically also has higher value, and therefore, crucian export trade amount increases year by year in recent years, and the consumption figure of domestic crucian is also in rising trend.

Because natural crucian resource far can not meet people's consumption demand, therefore crucian cultivation industry also starts to have entered the fast-developing phase.Existing crucian hatching, cultivating method is: crucian parent population is positioned in prior cement pit of sterilizing and is laid eggs, the fertilized egg of giving birth to continuation hatches into carp fry in cement pit, after the flat trip of fry, cultivate in the pond that fry is transferred to after prior rich water; But existing method, in the time laying eggs, due to the accumulation of ovum, causes the seedling rate of hatching low, it is low in juvenile fish opening stage survival rate that crucian is grown seedlings.

Summary of the invention

For solving the low problem of survival rate in present crucian seedling raising process, the invention provides a kind of crucian seedling-cultivating method, improve the survival rate in seedling raising process.

The present invention is achieved through the following technical solutions: a kind of crucian seedling-cultivating method, comprises the following steps:

(1) breeding is laid eggs, and to select healthy male and female crucian ratio be 3:1, starts to hasten parturition when sexual maturity, after injection human chorionic gonadtropin, puts obstetric table into, makes it carry out mate and oviposit;

(2) ovum is put into hatchery and evenly hatch, oxygenating rod is placed on pool side, at the bottom of oxygenating rod is placed on pond after membrane, cultivates crucian seedling;

(3) clean up the pond with the medicine of cleaning up the pond, after 3 days, start water filling, depth of water 100cm, then carries out rich water with amino acid, and when pond water color is cultivated yellow green, crucian seedling starts the lower pool, throws in seedling 10-12 ten thousand tails for every mu;

(4) under crucian seedling, before the pool, be first placed in oxygen bag, put in pool water within and cushion 10-20min, be then placed in net cage;

(5) feed as bait with milk powder and yolk, every 100,000 tail crucian seedling are used 8-10 yolk and milk powder 300g;

After (6) 12 days, start the powder of throwing something and feeding, powder is milk powder, every day 2-3 time, the 1.5kg/ mu of at every turn throwing something and feeding.

For preventing ovum pile-up, evenly to hatch in hatchery, oxygenating rod is placed on pool side, at the bottom of being placed on pond, has increased ovum amount of oxygen around, and can make ovum disperse after membrane, reduces the density of ovum, significantly improves the membrane rate of carp fry.

The described medicine of cleaning up the pond is at least one in quicklime and bleaching powder.

For preventing high temperature, with cistern, to water filling in pool, each 1-2cm, reaches the object of cooling oxygenation.

Beneficial effect of the present invention: carry out crucian by this method and grow seedlings, seedling percent, more than 40%, has improved the survival rate of seedling, regulate the density of ovum by the position adjustments of oxygenating rod, reduce the amount of labour, and reduced seedling cost, increased economic benefit.

Embodiment

A kind of crucian seedling-cultivating method, comprises the following steps:

(1) breeding is laid eggs, and to select healthy male and female crucian ratio be 3:1, starts to hasten parturition when sexual maturity, after injection human chorionic gonadtropin, puts obstetric table into, makes it carry out mate and oviposit;

(2) ovum is put into hatchery and evenly hatch, oxygenating rod is placed on pool side, at the bottom of oxygenating rod is placed on pond after membrane, cultivates crucian seedling;

(3) clean up the pond with the medicine of cleaning up the pond, after 3 days, start water filling, depth of water 100cm, then carries out rich water with amino acid, and when pond water color is cultivated yellow green, crucian seedling starts the lower pool, throws in seedling 10-12 ten thousand tails for every mu;

(4) under crucian seedling, before the pool, be first placed in oxygen bag, put in pool water within and cushion 10-20min, be then placed in net cage;

(5) feed as bait with milk powder and yolk, every 100,000 tail crucian seedling are used 8-10 yolk and milk powder 300g;

After (6) 12 days, start the powder of throwing something and feeding, powder is milk powder, every day 2-3 time, the 1.5kg/ mu of at every turn throwing something and feeding.

Claims (1)

1. a crucian seedling-cultivating method, is characterized in that, comprises the following steps:

(1) breeding is laid eggs, and to select healthy male and female crucian ratio be 3:1, starts to hasten parturition when sexual maturity, after injection human chorionic gonadtropin, puts obstetric table into, makes it carry out mate and oviposit;

(2) ovum is put into hatchery and evenly hatch, oxygenating rod is placed on pool side, at the bottom of oxygenating rod is placed on pond after membrane, cultivates crucian seedling;

(3) clean up the pond with the medicine of cleaning up the pond, after 3 days, start water filling, depth of water 100cm, then carries out rich water with amino acid, and when pond water color is cultivated yellow green, crucian seedling starts the lower pool, throws in seedling 10-12 ten thousand tails for every mu;

(4) under crucian seedling, before the pool, be first placed in oxygen bag, put in pool water within and cushion 10-20min, be then placed in net cage;

(5) feed as bait with milk powder and yolk, every 100,000 tail crucian seedling are used 8-10 yolk and milk powder 300g;

After (6) 12 days, start the powder of throwing something and feeding, powder is milk powder, every day 2-3 time, the 1.5kg/ mu of at every turn throwing something and feeding.