CN103875551A

CN103875551A - Loach industrial breeding method

Info

Publication number: CN103875551A
Application number: CN201210554129.8A
Authority: CN
Inventors: 张述智; 夏伟; 朱绍辉; 张�浩; 王晓丽; 徐权汗; 李之详; 许团辉
Original assignee: Qingdao Zhongren Pharmaceutical Coltd
Current assignee: Qingdao Zhongren Pharmaceutical Coltd
Priority date: 2012-12-19
Filing date: 2012-12-19
Publication date: 2014-06-25

Abstract

The invention discloses a loach industrial breeding method. The loach industrial breeding method includes temporary rearing of parent loaches, artificial stimulation for spawning, artificial breeding and advanced fry culturing. By means of the method, early fry emerging can be achieved, commercial scale can be achieved in the current year, the fry forming rate and the survival rate are high, and advanced fries are sound.

Description

Loach factorial seedling-culturing method

Technical field

The invention belongs to loach breeding technical field, be specifically related to loach factorial seedling-culturing method.

Background technology

Loach is a kind of small-sized benthic fishes, and in mid-term in last century, loach is low value fish that can not enter desktop, but since this century, due to loach fine and tender taste, delicious flavour, particularly nutritious and liked by consumers in general, and be the hard-to-get commodity of international market, be one of exported product of China's aquatic products, therefore, market price increases, approximately 40 yuans of existing market price per kilograms, are almost equivalent to the market price of prawn.

Because loach breeding is relatively easy, can singlely cultivate, also can raise together with, also can paddy field aquaculture, the cultivation such as lotus rhizome pond, disease is less, and bait requires more extensive, and numerous raisers are increased for loach breeding interest.

But loach seedling fostering, still in relative backward state, generally takes local method naturally to grow seedlings at present, semi-natural growing seedlings, spawning rate is low, and incubation rate is low, and planting percent is low, seedling-growing time evening, is difficult to meet the demand of producing.

Summary of the invention

The above-mentioned defect existing in order to overcome prior art field, the object of the invention is to, and a kind of loach factorial seedling-culturing method is provided, and solves prior art spawning rate low, and incubation rate is low, and planting percent is low, seedling-growing time evening, is difficult to meet the demand of producing.

Loach factorial seedling-culturing method provided by the invention, comprises the following steps:

(1) artificial induced spawning, about at 10 o'clock in the morning, in the pond of brown sheet, put into being placed with the close loach of supporting temporarily taking female-male proportion as 1:2, the sodium chloride solution dipping bath that parent loach is 30% through concentration 5 minutes, is warming up to 25 DEG C, and washes by water, parent loach stimulates through the opposite sex, thermal stimulus, current stimulate, and within second day, get final product nature synchronous spawning; Gather with the brown sheet of fertilized egg, proceed to hatchery, hatch for 25 DEG C, 24 hours membranes, can move about after three days;

(2) artificial breeding, had inoculated to 50 centimetres of the depth of waters in the nursery pond of wheel animalcule and put into seedling, gently oxygenation with every square metre of 50,000 tails left and right the previous day, again water is progressively added and is deep to 1 meter, except wheel animalcule, also will supplement artitificial food every day, throw something and feed every day 2-3 times, and change water every day;

(3) postlarva is cultivated, and while growing to 1 centimetre through cultivating seedling, the mode that can adopt pond net box to cultivate is cultivated, and the net cage of 4 40 order left and right is put in every mu of pond, and 50 centimetres of the depth of waters are put seedling with the quantity of every square metre of 2000 tails in net cage;

It is further comprising the steps of: close loach is supported temporarily, when water temperature reaches 10 DEG C of left and right, when loach comes into play, selects physically fitly, anosis, and without wound, the loach more than heavy 50g of single urosome, as close loach; The sodium chloride solution dipping bath that the close loach of choosing is 25% by concentration, after 5 minutes, is put into cement pit, 1 meter of the pond depth of water, and pond is rectangle, approximately 20 cubic metres, water body is put 30 tail left and right, is put brown sheet and make things concealed in pond for every square metre; Parent loach enters behind pond, carry out fortification, the soft pellet diet that fish gruel, egg white, dregs of beans, wheat bran etc. are made of can throwing something and feeding every day, respectively throw something and feed 1 time every day sooner or later, till observation is eaten up, prevent residual bait, according to circumstances change continuously water, water temperature is from Natural Water temperature, heat up 0.5 DEG C initial 5 day every day, heat up 1 DEG C every day later, be warming up to 23 DEG C, check sexual gland developmental state; Described close loach divides pond to support temporarily taking female-male proportion as 1:2; Carrying out preparing spawning pond before described artificial induced spawning, spawning pond is cement pit, at the bottom of sterilization after-bay, lays the brown sheet through disinfecting, and injects 30 cm of water; Carrying out preparing nursery pond before artificial breeding, nursery pond cleans putting seedling for first 3 days, and sterilization, injects clear water, first day inoculation chlorella, second day inoculating rotifer.

Loach factorial seedling-culturing method provided by the invention, its beneficial effect is, can early emerge, and can form then commodity scale; Planting percent is high; Seedling is physically fit, and while forming, survival rate is high.

Embodiment

Below in conjunction with an embodiment, loach factorial seedling-culturing method provided by the invention is described in detail.

Embodiment

The loach factorial seedling-culturing method of the present embodiment, comprises the following steps:

(1) close loach is supported temporarily, when water temperature reaches 10 DEG C of left and right, when loach comes into play, selects physically fitly, anosis, and without wound, the loach more than heavy 50g of single urosome, as close loach; The sodium chloride solution dipping bath that the close loach of choosing is 25% by concentration, after 5 minutes, is put into cement pit, 1 meter of the pond depth of water, and pond is rectangle, approximately 20 cubic metres, water body is put 30 tail left and right, is put brown sheet and make things concealed in pond for every square metre; Parent loach enters behind pond, carries out fortification, the soft pellet diet that fish gruel, egg white, dregs of beans, wheat bran etc. are made of can throwing something and feeding every day, sooner or later respectively throw something and feed 1 time every day, and observation prevents residual bait till eating up, according to circumstances change continuously water, water temperature is from Natural Water temperature, and heat up 0.5 DEG C initial 5 day every day, heats up later every day 1 DEG C, be warming up to 23 DEG C, check sexual gland developmental state, egg development is full, when dispersion, can carry out artificial induced spawning;

(2) artificial induced spawning, prepares spawning pond, and spawning pond is cement pit, at the bottom of sterilization after-bay, lay the brown sheet through disinfecting, inject 30 cm of water, about at 10 o'clock in the morning, in the pond of brown sheet, put into being placed with the close loach of supporting temporarily taking female-male proportion as 1:2, the sodium chloride solution dipping bath that parent loach is 30% through concentration 5 minutes, is warming up to 25 DEG C, and washes by water, parent loach stimulates through the opposite sex, thermal stimulus, current stimulate, and within second day, get final product nature synchronous spawning; Gather with the brown sheet of fertilized egg, proceed to hatchery, hatch for 25 DEG C, 24 hours membranes, can move about after three days;

(3) artificial breeding, prepares nursery pond, and nursery pond cleans putting seedling for first 3 days, sterilization, injects clear water, first day inoculation chlorella, second day inoculating rotifer, within the 3rd day, in the nursery pond of 50 centimetres of the depth of waters, put into seedling with every square metre of 50,000 tail left and right, oxygenation gently, then water is progressively added and is deep to 1 meter, every day is except wheel animalcule, also to supplement artitificial food, throw something and feed every day 2-3 times, and change water every day;

(4) postlarva is cultivated, and while growing to 1 centimetre through cultivating seedling, the mode that can adopt pond net box to cultivate is cultivated, and the net cage of 4 40 order left and right is put in every mu of pond, and 50 centimetres of the depth of waters are put seedling with the quantity of every square metre of 2000 tails in net cage.

Claims

1. a loach factorial seedling-culturing method, is characterized in that: comprise the following steps:

One, artificial induced spawning, about at 10 o'clock in the morning, in the pond of brown sheet, put into being placed with the close loach of supporting temporarily taking female-male proportion as 1:2, the sodium chloride solution dipping bath that parent loach is 30% through concentration 5 minutes, is warming up to 25 DEG C, and washes by water, parent loach stimulates through the opposite sex, thermal stimulus, current stimulate, and within second day, get final product nature synchronous spawning; Gather with the brown sheet of fertilized egg, proceed to hatchery, hatch for 25 DEG C, 24 hours membranes, can move about after three days;

Two, artificial breeding, had inoculated to 50 centimetres of the depth of waters in the nursery pond of wheel animalcule and put into seedling, gently oxygenation with every square metre of 50,000 tails left and right the previous day, again water is progressively added and is deep to 1 meter, except wheel animalcule, also will supplement artitificial food every day, throw something and feed every day 2-3 times, and change water every day;

Three, postlarva is cultivated, and while growing to 1 centimetre through cultivating seedling, the mode that can adopt pond net box to cultivate is cultivated, and the net cage of 4 40 order left and right is put in every mu of pond, and 50 centimetres of the depth of waters are put seedling with the quantity of every square metre of 2000 tails in net cage.

2. loach factorial seedling-culturing method according to claim 1, is characterized in that: it is further comprising the steps of: close loach is supported temporarily, when water temperature reaches 10 DEG C of left and right, when loach comes into play, select physically fit, anosis, without wound, the loach more than heavy 50g of single urosome, as close loach; The sodium chloride solution dipping bath that the close loach of choosing is 25% by concentration, after 5 minutes, is put into cement pit, 1 meter of the pond depth of water, and pond is rectangle, approximately 20 cubic metres, water body is put 30 tail left and right, is put brown sheet and make things concealed in pond for every square metre; Parent loach enters behind pond, carry out fortification, the soft pellet diet that fish gruel, egg white, dregs of beans, wheat bran etc. are made of can throwing something and feeding every day, respectively throw something and feed 1 time every day sooner or later, till observation is eaten up, prevent residual bait, according to circumstances change continuously water, water temperature is from Natural Water temperature, heat up 0.5 DEG C initial 5 day every day, heat up 1 DEG C every day later, be warming up to 23 DEG C, check sexual gland developmental state.

3. loach factorial seedling-culturing method according to claim 2, is characterized in that: described close loach is supported in point pond temporarily taking female-male proportion as 1:2.

4. loach factorial seedling-culturing method according to claim 1, is characterized in that: carrying out preparing spawning pond before described artificial induced spawning, spawning pond is cement pit, at the bottom of sterilization after-bay, lays the brown sheet through disinfecting, and injects 30 cm of water.

5. loach factorial seedling-culturing method according to claim 1, is characterized in that: carrying out preparing nursery pond before artificial breeding, nursery pond cleans putting seedling for first 3 days, and sterilization, injects clear water, first day inoculation chlorella, second day inoculating rotifer.