CN105900877A - Artificial spawning induction and loach fry breeding method - Google Patents

Artificial spawning induction and loach fry breeding method Download PDF

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Publication number
CN105900877A
CN105900877A CN201610257024.4A CN201610257024A CN105900877A CN 105900877 A CN105900877 A CN 105900877A CN 201610257024 A CN201610257024 A CN 201610257024A CN 105900877 A CN105900877 A CN 105900877A
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spawning
pond
water
loach
hatching
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CN105900877B (en
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王太松
王太新
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JIANYANG DAZHONG CULTIVATION CO Ltd
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JIANYANG DAZHONG CULTIVATION CO Ltd
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Abstract

The invention discloses an artificial spawning induction and loach fry breeding method and belongs to the field of breeding. The artificial spawning induction and loach fry breeding method comprises the five steps that a spawning and hatching pond is prepared, and an overflow discharging device is arranged at the bottom of the spawning and hatching pond; water is injected into the spawning and hatching pond, water temperature in the spawning and hatching pond is kept at 15-25 DEG C, the wall of the pond is flushed to be clean after disinfection is performed for 2-4 hours and the water is discharged out, a plurality of spawn and fry collecting boxes, a plurality of spawning nets and an oxygen supplanting machine are arranged in the spawning and hatching pond, and clean water is injected into the pond. The artificial spawning induction and loach fry breeding method has the advantages that the method is simple in operation, high in spawning induction efficiency and high in loach fry yield, loaches grow and develop well and are high in uniformity, and the demand for a large number of loach fries can be met through artificial breeding.

Description

A kind of method of artificial induced spawning breeding mud fish fry
Technical field
The present invention relates to a kind of cultural method, the propagation method of a kind of Misgurni anguillicaudati artificial induced spawning.
Background technology
Misgurni anguillicaudati is high protein, low-fat aquatic products, its fine and tender taste, nutritious, is delicious food, has more relatively High food therapy value, have the good reputation of " Radix Ginseng in water ".Along with wild Misgurni anguillicaudati quantity drastically reduces, artificial cultivation Misgurni anguillicaudati prospect is wide Wealthy.
But owing to Misgurni anguillicaudati natural propagation is laid eggs irregular, ovum grain incubation rate is low, and mud fish fry regularity is poor, more can not obtain in batches Obtain the measured mud fish fry of matter, take artificial induced spawning propagation method, mud fish fry can be bred in batch.But manually urging of prior art Producing inefficient, mud fish fry output is relatively low, and Misgurni anguillicaudati growth promoter situation is general, regularity is poor.
Summary of the invention
The goal of the invention of the present invention is: for the problem of above-mentioned existence, it is provided that a kind of simple to operate, efficiency of hastening parturition is high, Mud fish fry output is high, and Misgurni anguillicaudati growth promoter is good, regularity is high, it is possible to meet the artificial cultivation Misgurni anguillicaudati in a large number to the demand of mud fish fry The propagation method of artificial induced spawning.
The technical solution used in the present invention is as follows:
The method of a kind of artificial induced spawning breeding mud fish fry of the present invention, comprises the following steps,
Step one, prepares spawning and hatching pond, arranges overflowing device bottom spawning and hatching pond;
Step 2, by water filling in spawning and hatching pond, by constant for water temperature in spawning and hatching pond at 15 ~ 25 DEG C, after sterilization 2 ~ 4h, bleeds off After water, pool wall is rinsed well, some collection ovum collection seedling box, some net and aerators of laying eggs are set in spawning and hatching pond, in pond Note clean water;
Step 3, selects the close loach of gonadal maturation, prepares appropriate odinagogue, lays eggs putting into after parent loach injection odinagogue In net, open aerator;
Step 4, controls water temperature according to Effect time, is all pulled out by parent loach after having laid eggs, and holding net of laying eggs is incubated laying eggs Change in pond;
Step 5, control water temperature is at 12 ~ 25 DEG C, and hatching is emerged, and when mud fish fry can freely be moved about, carries out opening and throws something and feeds, suitable Time collect mud fish fry cultivate.
The method of a kind of artificial induced spawning breeding mud fish fry of the present invention, described spawning and hatching pond is provided with osculum, lays eggs and incubate Change to tilt to osculum direction at the bottom of the pond in pond;Described overflowing device includes drain pipe and the water-level control apparatus being connected, described Water-level control apparatus includes height of water level regulation portion and the gap being connected, described height of water level regulation portion and drain pipe phase Even, described height of water level regulation portion is arranged at around osculum, and the bottom in described height of water level conciliation portion is equal with at the bottom of pond.
Owing to have employed technique scheme, after the depth of water of water has exceeded the predetermined suitable depth of water, water can be certainly Dynamic spilling, it is to avoid the depth of water is too high, is unfavorable for breeding and the growth of Misgurni anguillicaudati.Simultaneously during sterilization waits, it is possible to the most smooth Draining water, sterilization does not remains with material in pond.
The method of a kind of artificial induced spawning breeding mud fish fry of the present invention, the specification in described spawning and hatching pond is long 8 meters, width 2.5 meters, high 0.5 meter, the area in every mouthful of spawning and hatching pond is 20 square metres;Described drain pipe length is more than pool wall thickness 10cm, Caliber is 7.5cm;Height 40cm at the bottom of described gap distance pond;It is 40cm that described height of water level conciliation portion arranges height of water level.
Owing to have employed technique scheme, the size in spawning and hatching pond is the most reasonable, in most cost-saving scope, Ensure suitable breeding area.
A kind of method of the artificial induced spawning breeding mud fish fry of the present invention, described collection ovum collection seedling box length 3.8 meters, wide by 2.4, height 0.5 meter, the opening part tether of described collection ovum collection seedling box corner and collection ovum collection seedling box is tightened, every mouthful of spawning and hatching pond be provided with two mouthfuls close Eye net cage, described collection ovum collection seedling box is made up of 80 mesh sieve silks.
Owing to have employed technique scheme, collection ovum collection seedling box can use close eye net cage to make, and uses close eye net cage permissible Improving the incubation rate of Misgurni anguillicaudati ovum grain, mud fish fry is collected when transferring to pond, only need to slowly mention collection ovum collection seedling box from one, by mud Loach Seedling focuses on a jiao of ovum collection seedling box, scoops out with little basin, collects that mud fish fry is convenient and swift and no seedling injury, reduces warp Ji loss.
A kind of method of the artificial induced spawning breeding mud fish fry of the present invention, described in net of laying eggs long 4.2 meters, wide 2.8 meters, by 8 mesh Nylon mesh sheet make, every mouthful of spawning and hatching pond is provided with two nets of laying eggs.
Owing to have employed technique scheme, the close loach after hastening parturition is put into and lays eggs in net, and parent's laid eggs grain of loach can be from laying eggs Mesh drain in close eye net cage, it is to avoid close loach eats the phenomenon of ovum grain, improves the output capacity of mud fish fry.
A kind of method of the artificial induced spawning breeding mud fish fry of the present invention, the oxygenation of aerator in described every mouthful of spawning and hatching pond Power >=40W.
Owing to have employed technique scheme, spawning and hatching pond is according to the quantity optional electricity taste formula air pump oxygen supplement of hatching Machine, or vortex air pump aerator, to improve spawning and hatching water body dissolved oxygen, improve ovum grain incubation rate, inside each pond Oxygenation pipe and Fructus Amomi 4 overlap.
The method of a kind of artificial induced spawning breeding mud fish fry of the present invention, contacts spawning and hatching pond bottom described collection ovum collection seedling box Bottom, corner and upper edge are fixed on pool wall, pool inner water bit depth 40cm, along exceeding water surface 10cm in collection ovum collection seedling box, collect ovum Collection seedling box upper surface is equipped with net of laying eggs, described in lay eggs the corner of net and edge exceeds at the bottom of the water surface, net bottom and pond interval.
Owing to have employed technique scheme, the close loach after hastening parturition is put into and lays eggs in net, and parent's laid eggs grain of loach can be from laying eggs Mesh drain in close eye net cage, it is to avoid close loach eats the phenomenon of ovum grain, improves the output capacity of mud fish fry.
The method of a kind of artificial induced spawning breeding mud fish fry of the present invention, described parent's loach average weight 27 ~ 35 grams, build are even Claiming, female-male proportion is 1:1.5, throws in parent loach 1500, the most female loach 600, male loach 900 in each spawning and hatching pond.
Owing to have employed technique scheme, the efficiency of parent's loach copulation breeding is high.
The method of a kind of artificial induced spawning breeding mud fish fry of the present invention, described odinagogue is by 170 ~ 250 parts of S-of parts by volume GnRHa, 28 ~ 40 parts of maleic acid DOMs, 10 ~ 27 parts of N-acetyl-B-D-UNAGs, 20 ~ 30 part of 17 α 20 β-bis- Hydrocarbon progesterone, 50 ~ 62 parts of sodium chloride and 55 ~ 70 parts of deionized water compositions;Every close loach injection odinagogue 0.3 milliliter.
Owing to have employed technique scheme, the spawning effect of odinagogue is good, and feritilization of ovum rate is high.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, simple to operate, efficiency of hastening parturition is high, and mud fish fry output is high, and Misgurni anguillicaudati growth promoter is good, regularity is high, it is possible to meet artificial supporting Grow a large amount of demand to mud fish fry.
2, in most cost-saving scope, it is ensured that suitable breeding area, spawning effect is good, and feritilization of ovum rate is high, effectively Avoid parent loach and eat the phenomenon of ovum grain, improve the output capacity of mud fish fry.
Detailed description of the invention
The present invention is described in detail below.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, to the present invention It is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to Limit the present invention.
Embodiment 1
The method of a kind of artificial induced spawning breeding mud fish fry, comprises the following steps,
Step one, prepares spawning and hatching pond, arranges overflowing device bottom spawning and hatching pond;
Step 2, by water filling in spawning and hatching pond, by constant for water temperature in spawning and hatching pond at 15 DEG C, after sterilization 2 ~ 4h, bleeds off water After pool wall is rinsed well, some collection ovum collection seedling box, some net and aerators of laying eggs are set in spawning and hatching pond, in pond note Clean water;
Step 3, selects the close loach of gonadal maturation, prepares appropriate odinagogue, lays eggs putting into after parent loach injection odinagogue In net, open aerator;
Step 4, controls water temperature according to Effect time, is all pulled out by parent loach after having laid eggs, and holding net of laying eggs is incubated laying eggs Change in pond;
Step 5, control water temperature is at 12 DEG C, and hatching is emerged, and when mud fish fry can freely be moved about, carries out opening and throws something and feeds, receive in good time Collection mud fish fry is cultivated.
Spawning and hatching pond is provided with osculum, tilts to osculum direction at the bottom of the pond in spawning and hatching pond;Overflowing device includes phase The drain pipe connected and water-level control apparatus, water-level control apparatus includes height of water level regulation portion and gap, the water being connected Position height adjusting part is connected with drain pipe, and height of water level regulation portion is arranged at around osculum, the bottom in height of water level conciliation portion Equal with at the bottom of pond.The specification in spawning and hatching pond is for long 8 meters, wide 2.5 meters, high 0.5 meter, and the area in every mouthful of spawning and hatching pond is 20 flat Side's rice;Drain pipe length is more than pool wall thickness 10cm, and caliber is 7.5cm;Height 40cm at the bottom of gap distance pond;Height of water level is adjusted It is 40cm that solution portion arranges height of water level.Collection ovum collection seedling box length 3.8 meters, wide by 2.4, high 0.5 meter, collection ovum collection seedling box corner and Ji Luanji The opening part tether of seedling box is tightened, and every mouthful of spawning and hatching pond is provided with two mouthfuls of close eye net cages, and collection ovum collection seedling box is by 80 mesh sieve silk systems Become.Net of laying eggs is long 4.2 meters, wide 2.8 meters, is made up of the nylon mesh sheet of 8 mesh, is provided with two nets of laying eggs in every mouthful of spawning and hatching pond. In every mouthful of spawning and hatching pond, the oxygenation power of aerator is 40W.Contact bottom spawning and hatching pond bottom collection ovum collection seedling box, corner and Upper edge is fixed on pool wall, pool inner water bit depth 40cm, along exceeding water surface 10cm in collection ovum collection seedling box, collects ovum collection seedling box upper surface Being equipped with net of laying eggs, the corner of net of laying eggs and edge exceed interval at the bottom of the water surface, net bottom and pond.Parent loach average weight 27 grams, build Well-balanced, female-male proportion is 1:1.5, throws in parent loach 1500, the most female loach 600, male loach 900 in each spawning and hatching pond. Odinagogue by 170 parts of S-GnRHa of parts by volume, 28 parts of maleic acid DOMs, 10 parts of N-acetyl-B-D-UNAGs, 20 Part 17 α 20 β-bis-hydrocarbon progesterone, 50 parts of sodium chloride and 55 parts of deionized waters compositions;Every close loach injection odinagogue 0.3 milliliter.
This batch output mud fish fry about 2,700,000, brooding time 6 days, mud fish fry is thrown and is educated survival rate 99%.
Embodiment 2
The method of a kind of artificial induced spawning breeding mud fish fry, comprises the following steps,
Step one, prepares spawning and hatching pond, arranges overflowing device bottom spawning and hatching pond;
Step 2, by water filling in spawning and hatching pond, by constant for water temperature in spawning and hatching pond at 25 DEG C, after sterilization 2 ~ 4h, bleeds off water After pool wall is rinsed well, some collection ovum collection seedling box, some net and aerators of laying eggs are set in spawning and hatching pond, in pond note Clean water;
Step 3, selects the close loach of gonadal maturation, prepares appropriate odinagogue, lays eggs putting into after parent loach injection odinagogue In net, open aerator;
Step 4, controls water temperature according to Effect time, is all pulled out by parent loach after having laid eggs, and holding net of laying eggs is incubated laying eggs Change in pond;
Step 5, control water temperature is at 25 DEG C, and hatching is emerged, and when mud fish fry can freely be moved about, carries out opening and throws something and feeds, receive in good time Collection mud fish fry is cultivated.
Spawning and hatching pond is provided with osculum, tilts to osculum direction at the bottom of the pond in spawning and hatching pond;Overflowing device includes phase The drain pipe connected and water-level control apparatus, water-level control apparatus includes height of water level regulation portion and gap, the water being connected Position height adjusting part is connected with drain pipe, and height of water level regulation portion is arranged at around osculum, the bottom in height of water level conciliation portion Equal with at the bottom of pond.The specification in spawning and hatching pond is for long 8 meters, wide 2.5 meters, high 0.5 meter, and the area in every mouthful of spawning and hatching pond is 20 flat Side's rice;Drain pipe length is more than pool wall thickness 10cm, and caliber is 7.5cm;Height 40cm at the bottom of gap distance pond;Height of water level is adjusted It is 40cm that solution portion arranges height of water level.Collection ovum collection seedling box length 3.8 meters, wide by 2.4, high 0.5 meter, collection ovum collection seedling box corner and Ji Luanji The opening part tether of seedling box is tightened, and every mouthful of spawning and hatching pond is provided with two mouthfuls of close eye net cages, and collection ovum collection seedling box is by 80 mesh sieve silk systems Become.Net of laying eggs is long 4.2 meters, wide 2.8 meters, is made up of the nylon mesh sheet of 8 mesh, is provided with two nets of laying eggs in every mouthful of spawning and hatching pond. In every mouthful of spawning and hatching pond, the oxygenation power of aerator is 50W.Contact bottom spawning and hatching pond bottom collection ovum collection seedling box, corner and Upper edge is fixed on pool wall, pool inner water bit depth 40cm, along exceeding water surface 10cm in collection ovum collection seedling box, collects ovum collection seedling box upper surface Being equipped with net of laying eggs, the corner of net of laying eggs and edge exceed interval at the bottom of the water surface, net bottom and pond.Parent loach average weight 35 grams, build Well-balanced, female-male proportion is 1:1.5, throws in parent loach 1500, the most female loach 600, male loach 900 in each spawning and hatching pond. Odinagogue by 250 parts of S-GnRHa of parts by volume, 40 parts of maleic acid DOMs, 27 parts of N-acetyl-B-D-UNAGs, 30 part of 17 α 20 β-bis-hydrocarbon progesterone, 62 parts of sodium chloride and 70 parts of deionized water compositions;Every close loach injection odinagogue 0.3 milliliter.
This batch output mud fish fry about 2,300,000, brooding time 7 days, mud fish fry is thrown and is educated survival rate 99%.
Embodiment 3
The method of a kind of artificial induced spawning breeding mud fish fry, comprises the following steps,
Step one, prepares spawning and hatching pond, arranges overflowing device bottom spawning and hatching pond;
Step 2, by water filling in spawning and hatching pond, by constant for water temperature in spawning and hatching pond at 18 DEG C, after sterilization 2 ~ 4h, bleeds off water After pool wall is rinsed well, some collection ovum collection seedling box, some net and aerators of laying eggs are set in spawning and hatching pond, in pond note Clean water;
Step 3, selects the close loach of gonadal maturation, prepares appropriate odinagogue, lays eggs putting into after parent loach injection odinagogue In net, open aerator;
Step 4, controls water temperature according to Effect time, is all pulled out by parent loach after having laid eggs, and holding net of laying eggs is incubated laying eggs Change in pond;
Step 5, control water temperature is at 20 DEG C, and hatching is emerged, and when mud fish fry can freely be moved about, carries out opening and throws something and feeds, receive in good time Collection mud fish fry is cultivated.
Spawning and hatching pond is provided with osculum, tilts to osculum direction at the bottom of the pond in spawning and hatching pond;Overflowing device includes phase The drain pipe connected and water-level control apparatus, water-level control apparatus includes height of water level regulation portion and gap, the water being connected Position height adjusting part is connected with drain pipe, and height of water level regulation portion is arranged at around osculum, the bottom in height of water level conciliation portion Equal with at the bottom of pond.The specification in spawning and hatching pond is for long 8 meters, wide 2.5 meters, high 0.5 meter, and the area in every mouthful of spawning and hatching pond is 20 flat Side's rice;Drain pipe length is more than pool wall thickness 10cm, and caliber is 7.5cm;Height 40cm at the bottom of gap distance pond;Height of water level is adjusted It is 40cm that solution portion arranges height of water level.Collection ovum collection seedling box length 3.8 meters, wide by 2.4, high 0.5 meter, collection ovum collection seedling box corner and Ji Luanji The opening part tether of seedling box is tightened, and every mouthful of spawning and hatching pond is provided with two mouthfuls of close eye net cages, and collection ovum collection seedling box is by 80 mesh sieve silk systems Become.Net of laying eggs is long 4.2 meters, wide 2.8 meters, is made up of the nylon mesh sheet of 8 mesh, is provided with two nets of laying eggs in every mouthful of spawning and hatching pond. Oxygenation power >=the 40W of aerator in every mouthful of spawning and hatching pond.Contact bottom spawning and hatching pond bottom collection ovum collection seedling box, corner and Upper edge is fixed on pool wall, pool inner water bit depth 40cm, along exceeding water surface 10cm in collection ovum collection seedling box, collects ovum collection seedling box upper surface Being equipped with net of laying eggs, the corner of net of laying eggs and edge exceed interval at the bottom of the water surface, net bottom and pond.Parent's loach average weight 27 ~ 35 grams, Being well-proportioned, female-male proportion is 1:1.5, throws in parent loach 1500, the most female loach 600, male loach 900 in each spawning and hatching pond Bar.Odinagogue is by 200 parts of S-GnRHa of parts by volume, 38 parts of maleic acid DOMs, 15 parts of N-acetyl-B-D-UNAGs , 27 part of 17 α 20 β-bis-hydrocarbon progesterone, 54 parts of sodium chloride and 59 parts of deionized water compositions;Every close loach injection odinagogue 0.3 milliliter.
This batch output mud fish fry about 2,600,000, brooding time 6 days, mud fish fry is thrown and is educated survival rate 99%.
Embodiment 4
Spawning and hatching pond is cement pit, disposes overflowing water pipe bottom cement pit one end, intercepts a joint length than pool wall thickness many 10 Centimetre, the PVC plastic pipe of a diameter of 7.5 centimetres, in its pond, the elbow of a same specification is set up in one end, is installed in draining At hole, make elbow mouth upwards and equal with at the bottom of pond, elbow is inserted the pvc pipe of a segment length 40 centimetres, so when cement pit water depth More than 40 centimetres, water just can overflow automatically, if desired drains water, only need to be pulled out by the water pipe of insertion.At the bottom of cement pit And pool wall cement smears real the most floating, slightly tilt to osculum direction at the bottom of pond, in order to draining water during clear pond smoothly.
Use 80 mesh sieve silks to make collection ovum collection Seedling close eye net cage, use 8 mesh nylon mesh sheets to make net of laying eggs.
Spring gos up when temperature, and water temperature stability, when 18 DEG C, can start Misgurni anguillicaudati and hasten parturition propagation production.
Hasten parturition and the previous day " iodine health " after cement pit topped up with water (Chengdu three sun Industrial Co., Ltd. produces) is sterilized, flatly Cement pit use " iodine health " 10 milliliters of 20 square metres.Close eye is disposed after being bled off by water and rinse well with clear water after sterilizing 2 hours Net cage, 20 square metres of ponds dispose two mouthfuls of close eye net cages flatly, be affixed at the bottom of cement pit and push down with pebble in case net cage at the bottom of net cage The end, floats, then is fixed in net cage corner and upper edge, it is desirable to net cage is paved and stretched, and is subsequently adding clean water, water level depth 40 lis Rice, along exceeding the water surface 10 centimetres on the closeest eye net cage, the water of addition is cleaning subsoil water.Osculum is inserted with one section 40 centimetres high Pvc pipe, if water level is more than 40 centimetres, can automatically overflow.
Then on close eye net cage, spread a net of laying eggs, it is desirable to lay eggs net corner and edge exceed the water surface, net bottom can not Patch pond at the bottom of, so throw into lay eggs net in close loach lay eggs after, ovum grain can drain in close eye net cage from mesh of laying eggs.Last in pond Four oxygenation Fructus Amomi of middle input.
The close loach of breeding selects gonad fully-developed parent loach, and the most female loach abdominal part expands prominent, and gonopore turns up, in fresh Redness, light pressure abdominal part has water white ovum grain to flow out;Male loach abdominal part is soft, the long and narrow depression of gonopore, pinkiness, some energy Extrusion fubai color seminal fluid.Using continuous injector to hasten parturition to the injection of loach injection odinagogue, per injection dosage is more accurate, and Inhaling odinagogue without special messenger, can a people independently operate, injection operation speed is fast, improves efficiency 10 than tradition disposable syringe More than Bei.
Hasten parturition and carry out general afternoon preferably, in order to the next morning can observe the situation of laying eggs.First hero parent loach is pulled out and put In absorbent towels, sop up parent's loach body surface excessive moisture, then put on cotton gloves in order to grasping parent loach and carry out injection operation, injection Position is the parent front 1 centimetre of both sides of loach abdominal part cloacal aperture, and syringe needle is 45 degree of angles towards cephalad direction and loach body, contact pin degree of depth 0.2- 0.3 centimetre, every close loach injects solution 0.3 milliliter of hastening parturition, and the male parent loach after injection is i.e. put in and lays eggs in net, lays eggs in net for every Throw in 450;Then pressing same method injection dam loach, the dam loach after injection is put into equally and lays eggs in net, lays eggs by every Net is thrown in dam loach 300.Male and female parent loach is thrown in complete, opens aerator, and the oxygen supplement time is set as starting shooting 20 minutes, shuts down Circulation work in 10 minutes.
Parent's loach injection odinagogue to time of the climax that reaches to lay eggs be referred to as laying eggs effect time, the length of Effect time with plant loach Maturity closely related with water temperature, parent loach hasten parturition after Effect time be shown in Table 1
Table 1
Water temperature (DEG C) 20 23-25 26-27 28-32
Effect time (hour) 18-20 12-14 10 6-8
Afternoon on the previous day hastens parturition, and the next morning parent loach lays eggs successively, observes visible laid eggs grain and drains to from the mesh of net of laying eggs In the close eye net cage of face, substantially terminating to laying eggs, mesh sheet of laying eggs is lifted and is all pulled out by parent loach, and then mesh sheet is still put into pond In, mesh sheet of laying eggs again after hatching is emerged is taken out.
The brooding time of ovum grain is relevant to water temperature, when water temperature reaches 25 DEG C, within 24 hours, can hatch and emerge.Mud fish fry is just hatched Shi Quanchang about 3.5 millimeters, kiss end tool sticks together device, at the bottom of now mud fish fry is all attached to close eye net cage and on net cage wall.After hatching, 8 is little Time about, Seedling is about 4 millimeters, and schistostoma occurs, bicker has 1 pair of bastem;The gill filament exposes outside the gill cover, forms external gill;Pectoral fin is gradually Expand, whole body occur sparse melanin at this moment mud fish fry by " pox point " shape transparent when just hatching to body colour gradually blackening , to hatch latter 33 hours, Seedling length 4.5 millimeters, mouth lower jaw can be movable, and bicker occurs 2 to palpus;Yolk sac reduces;External gill continues Zhongchang: pectoral fin can be instigated back and forth, body surface melanin increases.Hatch about 60 hours, Seedling length 5.5 millimeters, can make simple travelling; When mud fish fry can freely be moved about, just should carry out opening and throw something and feed, collect mud fish fry after opening in good time and render to pond rearing.Raise Expect by 37 parts of protein of mass parts, 16 parts of lysines, 18 parts of crude fat, 4 parts of calcium carbonate compositions, 1.3 parts of vitamin A, 0.5 part of phosphorus Acid is ferrous and 2.4 parts of zinc phosphates form, and feedstuff is the expanded pellet feed of particle diameter 1mm.
After spawning and hatching pond often goes out a collection of mud fish fry, all should carry out disinfection cleaning, then proceedes to arrange next group breeding to incubate Change.
This batch output mud fish fry about 2,700,000, brooding time 7 days, mud fish fry is thrown and is educated survival rate 99%.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and Any amendment, equivalent and the improvement etc. made within principle, should be included within the scope of the present invention.

Claims (9)

1. the method for an artificial induced spawning breeding mud fish fry, it is characterised in that comprise the following steps,
Step one, prepares spawning and hatching pond, arranges overflowing device bottom spawning and hatching pond;
Step 2, by water filling in spawning and hatching pond, by constant for water temperature in spawning and hatching pond at 15 ~ 25 DEG C, after sterilization 2 ~ 4h, bleeds off After water, pool wall is rinsed well, some collection ovum collection seedling box, some net and aerators of laying eggs are set in spawning and hatching pond, in pond Note clean water;
Step 3, selects the close loach of gonadal maturation, prepares appropriate odinagogue, lays eggs putting into after parent loach injection odinagogue In net, open aerator;
Step 4, controls water temperature according to Effect time, is all pulled out by parent loach after having laid eggs, and holding net of laying eggs is incubated laying eggs Change in pond;
Step 5, control water temperature is at 12 ~ 25 DEG C, and hatching is emerged, and when mud fish fry can freely be moved about, carries out opening and throws something and feeds, suitable Time collect mud fish fry cultivate.
The method of a kind of artificial induced spawning the most as claimed in claim 1 breeding mud fish fry, it is characterised in that:, described spawning and hatching Pond is provided with osculum, tilts to osculum direction at the bottom of the pond in spawning and hatching pond;Described overflowing device includes the drain pipe being connected And water-level control apparatus, described water-level control apparatus includes height of water level regulation portion and the gap being connected, and described water level is high Degree regulation portion is connected with drain pipe, and described height of water level regulation portion is arranged at around osculum, described height of water level conciliation portion Bottom is equal with at the bottom of pond.
The method of a kind of artificial induced spawning the most as claimed in claim 2 breeding mud fish fry, it is characterised in that: described spawning and hatching pond Specification for long 8 meters, wide 2.5 meters, high 0.5 meter, the area in every mouthful of spawning and hatching pond is 20 square metres;Described drain pipe length is big In pool wall thickness 10cm, caliber is 7.5cm;Height 40cm at the bottom of described gap distance pond;Described height of water level conciliation portion is arranged Height of water level is 40cm.
4. the method for a kind of artificial induced spawning breeding mud fish fry as described in claim 1 or 2 or 3, it is characterised in that: described collection ovum Collection seedling box length 3.8 meters, wide by 2.4, high 0.5 meter, the opening part tether of described collection ovum collection seedling box corner and collection ovum collection seedling box is tightened, often Mouth spawning and hatching pond is provided with two mouthfuls of close eye net cages, and described collection ovum collection seedling box is made up of 80 mesh sieve silks.
The method of a kind of artificial induced spawning the most as claimed in claim 4 breeding mud fish fry, it is characterised in that net of laying eggs described in: is long 4.2 meters, wide 2.8 meters, be made up of the nylon mesh sheet of 8 mesh, every mouthful of spawning and hatching pond be provided with two nets of laying eggs.
6. the method for a kind of artificial induced spawning breeding mud fish fry as described in claim 1 or 2 or 5, it is characterised in that: described every mouthful Oxygenation power >=the 40W of aerator in spawning and hatching pond.
The method of a kind of artificial induced spawning the most as claimed in claim 6 breeding mud fish fry, it is characterised in that: described collection ovum collection seedling box Bottom contact spawning and hatching pond, bottom, corner and upper edge are fixed on pool wall, pool inner water bit depth 40cm, edge in collection ovum collection seedling box Exceeding water surface 10cm, collection ovum collection seedling box upper surface is equipped with net of laying eggs, described in lay eggs the corner of net and edge exceeds the water surface, net bottom And it is spaced at the bottom of pond.
8. the method for a kind of artificial induced spawning breeding mud fish fry as described in claim 1 or 2 or 7, it is characterised in that: described parent loach Average weight 27 ~ 35 grams, being well-proportioned, female-male proportion is 1:1.5, throws in parent loach 1500, wherein in each spawning and hatching pond Female loach 600, male loach 900.
The method of a kind of artificial induced spawning the most as claimed in claim 8 breeding mud fish fry, it is characterised in that: described odinagogue is by body Long-pending 170 ~ 250 parts of S-GnRHa of part, 28 ~ 40 parts of maleic acid DOMs, 10 ~ 27 parts of N-acetyl-B-D-UNAGs, 20 ~ 30 part of 17 α 20 β-bis-hydrocarbon progesterone, 50 ~ 62 parts of sodium chloride and 55 ~ 70 parts of deionized water compositions;Every close loach injection odinagogue 0.3 Milliliter.
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