CN104082194A - Two-step loach fry culturing method - Google Patents
Two-step loach fry culturing method Download PDFInfo
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- CN104082194A CN104082194A CN201410176458.2A CN201410176458A CN104082194A CN 104082194 A CN104082194 A CN 104082194A CN 201410176458 A CN201410176458 A CN 201410176458A CN 104082194 A CN104082194 A CN 104082194A
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Abstract
The invention discloses a two-step loach fry culturing method. Through the adoption of the two-step loach culturing method, the survival rate of loach fry reaches about 30%, the physique of the loach fry in the culture period is improved, the disease resistance is improved, the growth speed is accelerated, the economic efficiency is significantly improved, and adequate loach fry can be supplied for large-scale development of artificial loach culture.
Description
Technical field
The present invention relates generally to cultivation field, relates in particular to the training seedling-growing method of a kind of two step flow process loach.
Background technology
Loach artificial propagation, training shoot survival percent is quite low, become the bottleneck that large area is propagated artificially, we are through repetition test for many years, explore " two step flow processs " loach training seedling method, not only make loach survival rate of seedling reach 30% left and right, but also increased loach physique in seedling stage, improve premunition, accelerate growth rate, remarkable in economical benefits improves, and for large face development loach, propagates the seedling supply that provides sufficient artificially, and technique is fully verified in Ye Ji test region and periphery counties and districts loach breeding family at present.
Summary of the invention
The object of the invention is just to provide the training seedling-growing method of a kind of two step flow process loach.
The present invention is achieved by the following technical solutions:
A training seedling-growing method for two step flow process loach, comprises the following steps:
One, convenient controlled miniflow ability of swimming loach hatching method:
(1), build hatchery
Hatchery requires: long 5-7 rice, wide 1-1.5 rice, high 0.5-0.8 rice, and at the bottom of pond, one end is provided with discharge outlet, is provided with into water halter above the other end, and too smoothless at the bottom of pond, pool wall requires more smooth;
(2), incubator box is made
With round steel, be welded into cuboid framework, in base of frame, with round steel welding, do stull, round steel outside all encases with insulating tape, with polyethylene screen cloth except directly over surrounding and bottom seal, and strain;
(3), hatching water quality requirement
Spawning water is wanted precipitation twice, and way is as follows:
Be about to for the first time Ku Huo river course, pool water suction the first sedimentation basin, the little shape pond of the first described sedimentation basin for holding 1 kilostere; The second sedimentation basin is built in higher than near the place 1 meter of hatchery, and the second described sedimentation basin is for can hold 150m
3the cement pit of water, one jiao of cement pit is provided with gravity flow inlet channel and a pvc pipe road, this pvc pipe road pipeline is used for later rinse water mud sump, the emptying whole Chi Shui of energy is set, gravity flow inlet channel is located at the place higher than cement bottom layer 3-4cm, be connected with hatchery tap, in order to later stage hatching and miniflow water, use;
(4), water treatment
By water suction the first sedimentation basin, self-purification 4-5 days, then reaches 130-140m by first sedimentation basin water suction the second sedimentation basin
3after, with water purification peptide bacterium or sewage precious wait medicament all can, package insert usage amount increase 15-20% is pressed in medication metering, evenly splashes, and within after medication 22-25 hour, can be used as Spawning water;
(5), hatchery water level requires:
1. the hatchery depth of water requires high at 0.3-0.5 rice;
2. incubator box is inserted in hatchery, incubator box props up high 0.1-0.15 rice with brick;
(6), throw in quantity and the technical finesse of kind of loach:
1. the maternal individuality with 10-20 bar/kg, and bosom ovum feature is obvious; Obvious and the blue or green loach more than two ages of the sexual maturity of public this use 15-20 bar/kg, the maternal 250-350 tail that injects the medicament of hastening parturition is put in each hatchery, public this 500-700 tail, public this loach requires to complete and inject the medicament of hastening parturition at-17 o'clock at 15 o'clock in the afternoon same day, about 17 o'clock, put into hatchery, all kinds of loach will be rinsed once with clear water before putting into hatchery;
(7), the technical finesse of miniflow water and oxygenation:
1. when kind of a loach, put into hatchery after two hours, open the artesian water tap linking with the second sedimentation basin, be connected to a flexible pipe communicating with hatchery on tap, flexible pipe is placed in 10cm left and right in the water body of hatchery, makes water level remain on 4 ℃ of m left and right, keeps fine bourn amount 0.3m
3/ hour;
2. oxygenation
The aerator of capacity 40L/mm for oxygenation, two oxygenation heads are put in each hatchery, and 24 hours do not stop;
3. mating time with play kind of a loach time
Mate and oviposit is determined according to water temperature with playing kind of the loach time, and general 10 o'clock the next mornings or at 15 o'clock in afternoon, water temperature, between 20-32 ℃, plays kind of loach about at 10 o'clock in the morning; Water temperature is between 18-25 ℃, and kind of a loach about 15 o'clock, then removes kind of a loach in the afternoon, separately deals with, and incubator box is lifted into next hatchery, carries out next step operation;
4. miniflow water arrheas the time
Miniflow water arrheas the time, from kind of a loach, carries away hatchery Time Calculation, keeps water level in 30cm left and right, and miniflow water will keep 5-8 hour, according to the concentration adjustment of water quality in hatchery;
5. the hatching of ovum grain
In above-mentioned situation, ovum grain basic loose portion in hatchery is even, can not pile up, and membrane speed is relevant with water temperature, and general water temperature is at 25 ℃ when upper and lower, and ovum grain 32 hours is membrane substantially;
(8), oxygenation rule, seedling opening, lifting time
1. in general 250 ℃ of situations of water temperature, after 32 hours full membranes, if fine day, at 8 o'clock in the morning was taken out oxygenation head, and at 6 o'clock in afternoon put into, cloudy round-the-clock oxygenation;
2. opening is very important, generally, daytime can not opening, because if be fine day, the dead ovum that has egg membrane in the water of hatchery and do not hatch completely, to water body, cause certain pollution, pass through direct sunlight, in hatchery, can produce a lot of micro-bubbles, if after morning opening, seedling is uninterruptedly taken food, mistake is eaten down bubble as food, and generation bubble illness, be preferably in the lifting upper shed evening before yesterday, the 4th day morning of full membrane can lifting, that is to say opening in the 3rd day evening, opening time is 19 o'clock or 22 o'clock or during m seq 6, about at 7 o'clock in morning lifting time, overcast and rainy can the time period in the morning,
Lifting can be copied formula with water absorption type and net, and during lifting, seedling can not dewater;
Two, flow process race formula cultivating method
(1), nursery pond organic water is cultivated
1. preferably First Year was used the breeding of mature loach pond, became loach harvesting complete in year, pass the winter and freeze solarization, and mud is few, and area is at 1-1.5 mu;
2. not breeding loach first 20 days, add the new water of 10cm in pond, then full pond adds the live pig excrement of 5-8 ton, loosely sprinkles evenly, after three days, then adds the new water of 30cm, after 2 days placed separately, by worm for fishing speed, goes out, and goes up to specifications 3-5 and doubly measures full pool spilling head, for future use;
(2), cultivate the requirement of opening seedling hanging net cage pool inner water matter
1. opening seedling calculates for 15 days from the lifting of hatchery, with 1-1.5 mu culturing pool, draining is cleaned up the pond, at the bottom of pond, there is no mud as far as possible, fine day shines 4-5 days, then add the new water in 10cm left and right, 50 kilograms of change slurries of available quicklime, full pool spilling head, or by metering, increase by 30% full pool spilling head after 4-5 days with chlorine dioxide, from cultivating in organic pond suction 25cm organic water to nursery pond, add again the new water in 15cm left and right, general fine day completed two water inlets before at 10 o'clock in the morning, the next morning is observed water quality situation, if water quality reaches tea green, transparency reaches 10-15cm, the overall average 45cm of the depth of water, next by worm for fishing speed, go out by using metering to add 30% full pool spilling head, 3-5 days stand-by, calculated the lifting time, during lifting 17-18 noon before that day, seedling net cage is hung, seedling net cage is to be made with 60 order screen cloths, each net cage is decontroled mouthful seedling 4-5 ten thousand tails, by the opening seedling quantity hatching, calculate the quantity that net cage hangs, can drop into net cage morning next day the opening seedling in hatchery,
2. the special-purpose yolk powder of aquatic products for seedling opening material, 1,000,000 10-20 gram of left and right yolk powders tail seedling for, encase with 100 order screen cloths, and then use 1-2 premium on currency dissolves, and is spilled into hatchery, and the lifting time must complete in 2 hours;
3. under seedling after net cage, at 18 o'clock in afternoon will feed, feed feeds utilized very important, feed self-control feed, the soyabean protein powder that described self-control feed is is 10:5-6:2-3:1-2 by weight ratio, fly maggot powder, peanut powder, corn flour forms, by 80 order screen cloth processing, sift out and form, one barrel of water is made a call in former pond, do not want overfill, with about 40 grams self-control feeds of 60 order screen cloth bag, in bucket, shake for several times, until feed is dissolved, in the whole network case, splash, twice of every day, early 7 o'clock, 18 o'clock evenings, will observe water quality situation and transparency every day, water body overrich, easily there is bubble illness in seedling, at this moment add appropriate new water, water body is excessively light, seedling poor growth should be taken out the appropriate organic water of note in organic pond,
4. seedling, by the growth of 8-10 days in net cage, reaches 1cm left and right, turns pond;
(3), 1cm seedling turns pond, pool inner water matter and specification requirement
1. the culturing pool of crossing with solarization pond, clear pond, idle 1.2 mu of left and right of area, from suction 30-40cm organic water in organic pond, then adds the new water of 10-12cm, then with the worm for fishing speed by specification that goes out, measures full pool spilling head;
2. the 1cm seedling in net cage will turn pond from net cage in 8-10 days, it is to incubate stone and pick up being pressed in net cage body four angle bricks or goose that net cage turns seedling-growing method, then two people mention net cage slowly to walking on one side, seedling are risen to one jiao, net cage, gently to entering in larger basin, put into another nursery pond, put into quantity 20-30 ten thousand tail/mus, according to net cage seedling nursery time order and function, as the seedling that box is educated in 3-5 days, can, with putting a pond, surpass the seedling of educating for 5 days and will turn the concentrated training of next nursery pond seedling;
3. the requirement after putting into
Put into the nursery pond of 1cm seedling, in pond, must have a small amount of assorted pasture and water or manually place a small amount of water peanut;
4. secondary is grown seedlings water quality requirement and feeding method
1cm seedling is put into after secondary nursery pond one week without feeding, observe water body color, water body color is dark tea green, transparency is not too important, after second week, to add the pig manure 280-320 kilogram fermenting, pig manure after fermentation can not be too dry, stack location, after the 3rd week, start to feed feed, feed protein feed, the soyabean protein powder that described protein feed is is 10:4-6:2-3 by weight ratio, fly maggot powder, peanut powder forms, the granules processing with 40 order screen cloth sievings, sooner or later respectively feed once, method is to add 500 grams of left and right granules with 1 barrel of water, stirringization slurry in bucket, full pool spilling head, examine water quality, as water quality overfertilization can be fed once at interval for one day, loach has certain lethality when proceeding to intestinal respiration, water quality and feeding capacity to be controlled, to regularly rise and copy a small amount of seedling, observe physique, whether there is saprolegniasis, whether belly is rubescent, if there is saprolegniasis symptom, available 0.04% salt and 0.04% sodium bicarbonate mixture full pool spilling head, if belly is rubescent, food-intake is excessive, while turning intestinal respiration, cause death, the new water of appropriate filling, reduce feeding amount, the seedling of feeding through 35-40 days 70% proceeds to intestinal respiration, start turk, after changing into enteron aisle breathing, start by normal the breeding of mature loach procedure operation.
Advantage of the present invention is:
Loach training seedling method of the present invention, not only makes loach survival rate of seedling reach 30% left and right, but also has increased loach physique in seedling stage, improves premunition, accelerates growth rate, and remarkable in economical benefits improves, for large face development loach is propagated the seedling supply that provides sufficient artificially.
Embodiment
Embodiment 1
One, convenient controlled miniflow ability of swimming loach hatching method
1, build hatchery
Hatchery requires: 6 meters of length, wide 1.2 meters, high 0.6 meter (pressing internal volume), at the bottom of pond, one end is provided with discharge outlet (diameter 50cmPVC pipe), above the other end, be provided with into water halter (running water cage gets final product diameter 3cm), too smoothless at the bottom of pond, too smooth ovum grain is easily piled up, and pool wall requires more smooth;
2, incubator box is made
With diameter, be 14mm round steel, long 5 meters, wide 1 meter, high 0.4 meter, be welded into cuboid framework, in base of frame, with 2-3 root diameter, be that stull is done in the welding of 14mm round steel, round steel outside all encases with insulating tape.With 7 order polyethylene screen cloths except directly over surrounding and bottom seal, and strain;
3, hatching water quality requirement
Spawning water is wanted precipitation twice, and way is as follows:
For the first time both by Ku Huo river course, pool water suction the first sedimentation basin the little shape pond of molten 1 kilostere (can); The second sedimentation basin is built in higher than local near 1 meter of hatchery, can molten 150m
3the cement pit of water, one jiao of cement pit is provided with gravity flow inlet channel and diameter 110cmPVC pipeline, and this pipeline is later rinse water mud sump use, and arranging can emptying whole Chi Shui.Gravity flow water supply pipe is located at the place higher than cement bottom layer 3-4cm, is connected with hatchery tap, in order to later stage hatching and miniflow water, uses.
4, water treatment
By water suction the first sedimentation basin, self-purification 4-5 days, object is in order to clarify water quality and to remove impurity, then first sedimentation basin water suction the second sedimentation basin being reached to 140m
3behind left and right, with water purification peptide bacterium or sewage treasured or the excellent medicament of substrate all can, package insert usage amount increase by 20% press in medication metering, evenly splashes; Within after medication 24 hours, can be used as Spawning water;
5, hatchery water level requires:
1. the hatchery depth of water requires high at 0.4 meter.
2. incubator box is inserted in hatchery, incubator box props up high 0.12 meter with brick.
6, throw in quantity and the technical finesse of kind of loach:
1. the maternal individuality with 15/kg left and right, and bosom ovum feature is obvious; 20/kg of public this use left and right sexual maturity obviously and blue or green loach more than two ages (note: as made male and female with plate loach, physique requirement is greater than blue or green loach 20% left and right).Maternal and public ratio is originally 1:2.Female parent 300 tails that inject the medicament of hastening parturition are put in each hatchery, public these 600 tails, and public this loach requires to complete and inject the medicament of hastening parturition at-17 o'clock at 15 o'clock in the afternoon same day, about 17 o'clock, puts into hatchery.All kinds of loach will be rinsed once with clear water before putting into hatchery.
2. the practical technique standard of hastening parturition
Oxytocic adds DOM with HLRHA4, maternal every injection dose 0.3ml, and public this 0.2ml, in order effectively to control the degree of depth into pin (No. 4 syringe needles), can put at the base portion of syringe needle sebific duct or plastic tube.Make syringe needle expose 1-1.5mm, for not damaging loach body and injection conveniently, during injection, can encase loach with husky cloth, syringe and fish body are miter angle injection, by inserting forward below, contact pin degree of depth 1-1.5mm, injection site with muscle of back or both sides, fin front lower place, back for well.Between hatchery water temperature requires 18-30 ℃.
7, the technical finesse of miniflow water and oxygenation
1. when planting a loach, put into hatchery after two hours, unlatching is leading with the artesian water of No. two pond links, is connected to a flexible pipe communicating with hatchery on tap, and flexible pipe is placed in about the interior 10cm of hatchery water body, makes water level remain on 40cm left and right, maintenance fine bourn amount 0.3m
3/ hour.
2. oxygenation
220VAC/50HZ capacity 40L/mm aerator for oxygenation, two oxygenation heads are put in each hatchery, and 24 hours do not stop.
3. mating time with play kind of a loach time
Mate and oviposit is determined according to water temperature with playing kind of the loach time, general 10 o'clock the next mornings or at 15 o'clock in afternoon.Water temperature, between 20 ℃-32 ℃, plays kind of loach about at 10 o'clock in the morning; Water temperature, between 18-25 ℃, plays kind of loach in the afternoon about 15 o'clock.Then remove kind of a loach, separately deal with.Incubator box is lifted into next hatchery, carried out next step operation.
4. miniflow water arrheas the time
Miniflow water arrheas the time, from kind of a loach, carries away hatchery Time Calculation, keeps water level in 30cm left and right.Miniflow water will keep 5-8 hour, according to the concentration adjustment of water quality in hatchery.
5. the hatching of ovum grain
In above-mentioned situation, ovum grain basic loose portion in hatchery is even, can not pile up, and membrane speed is relevant with water temperature, and general water temperature is at 25 ℃ when upper and lower, and ovum grain 32 hours is membrane substantially, and membrane rate can reach 95%.
8, oxygenation rule, seedling opening, lifting time
1. in general 25 ℃ of situations of water temperature, after 32 hours full membranes, if fine day, at 8 o'clock in the morning was taken out oxygenation head, and at 6 o'clock in afternoon put into, cloudy round-the-clock oxygenation.
2. opening is very important, and generally, daytime can not opening, because if be fine day, the dead ovum that has egg membrane in the water of hatchery and do not hatch completely, causes certain pollution to water body, pass through direct sunlight, in hatchery, can produce a lot of micro-bubbles, if after morning opening, seedling is uninterruptedly taken food, mistake is eaten down bubble as food, and generation bubble illness (if any this sick generation, can treat with appropriate salt solution, but seedling is had compared with major injury).Be preferably in the lifting upper shed evening before yesterday, the 4th day morning of full membrane can lifting, that is to say opening in the 3rd day evening, and opening time is 19 o'clock or 22 o'clock or during m seq 6, and about at 7 o'clock in morning lifting time, overcast and rainy can the time period in the morning.
Lifting can be copied formula with water absorption type and net, and article net is copied formula, and the net formula of copying is to do triangularity diddle-net just with 80 order screen cloths, and seedling is generally in hatchery surrounding, and very simple by diddle-net, during lifting, seedling can not dewater.
Two, flow process race formula cultivating method
1, nursery pond organic water is cultivated
1. preferably First Year was used the breeding of mature loach pond, became loach harvesting complete in year, pass the winter and freeze solarization, and mud is few, and area is 1.2 mu of left and right.
2. not breeding loach first 20 days, add the new water of 10cm in pond, then full pond adds the live pig excrement of 5-8 ton, loosely sprinkles evenly, after three days, then adds the new water of 30cm, after 2 days placed separately, by worm for fishing speed, goes out, and on specification, 3-5 doubly measures full pool spilling head, for future use.
2, cultivate the requirement of opening seedling hanging net cage pool inner water matter
1. opening seedling calculates for 15 days from the lifting of hatchery, with 1.2 mu of left and right culturing pools, draining is cleaned up the pond, at the bottom of pond, there is no mud as far as possible, fine day shines 4-5 days, then adds the new water in 10cm left and right (delivery port will with 9 order screen packs), and 50 kilograms of available quicklimes are changed and starched, full pool spilling head, or by metering, increase by 30% full pool spilling head with chlorine dioxide.After 4-5 days, from cultivating in organic pond suction 25cm organic water to nursery pond (9 order screen packs for delivery port), then add the new water of 15cm (will add equally 9 order screen packs).General fine day completed two water inlets before at 10 o'clock in the morning, and the next morning is observed water quality situation, if water quality reaches tea green, transparency reaches 10-15cm, the overall average 45cm of the depth of water, next goes out by using metering to add 30% full pool spilling head by worm for fishing speed, and 3-5 days stand-by.Calculated the lifting time, during lifting 17-18 noon before that day, seedling net cage has been hung, seedling net cage is to be made with 60 order screen cloths, long 3 meters, wide 2 meters, high 1 meter.Each net cage is decontroled mouthful seedling 4-5 ten thousand tails, by the opening seedling quantity hatching, calculates the quantity that net cage hangs.Can drop into net cage morning next day the opening seedling in hatchery.
2. the special-purpose yolk powder of aquatic products for seedling opening material, 15 grams of left and right yolk powders for 1,000,000 tail seedlings.With 100 order screen cloths, encase, then with 1.5 premium on currency, dissolve, be spilled into hatchery.Feed number of times with above-mentioned.The lifting time must complete in 2 hours.
3. under seedling after net cage, at 18 o'clock in afternoon will feed, feed feeds utilized very important, feed self-control feed, soyabean protein powder, fly maggot powder, peanut powder, corn flour that described self-control feed is 10:5-6:2-3:1-2 by weight ratio form, by 80 order screen cloth processing, sifted out and formed, one barrel of water is made a call in former pond, not overfill.With about 40 grams self-control material of 60 order screen cloth bag shake several in bucket, until feed is dissolved, splash in the whole network case (note: can feed about 10 casees for a barrel), every day twice, early 7 o'clock, late 18 o'clock.Will observe water quality situation and transparency every day, water body overrich, and easily there is bubble illness in seedling, at this moment adds appropriate new water, and water body is excessively light, and seedling poor growth should be taken out the appropriate organic water of note in organic pond.
4. seedling, by the growth of 8-10 days in net cage, can reach 1cm left and right, so seedling only can Fast Growth in net cage, Here it is and natural enemy race and the common result of artificial feeding.Because, the organic water of extracting out from organic pond does not also have to produce in the situation of assorted worm by drug treating, be drawn into again net cage seedling nursery pond, and inlet port has screen pack, at nursery pond, carried out twice medication again, there is no assorted worm and so on deposits yields, seedling can be smoothly applicable under the organic water environment that its grows and the good to eat bait healthy growth of artificial feeding, even if having without going into it deeply, lay eggs, output young baby makes and does not become very large injury it.
3,1cm seedling turns pond, pool inner water matter and specification requirement
1. the culturing pool of crossing with solarization pond, clear pond, idle 1.2 mu of left and right of area, from suction 35cm organic water in organic pond, then adds the new water of 10cm (water inlet is used 9 order screen packs equally), then with the worm for fishing speed by specification that goes out, measures full pool spilling head, and 5 days available.
2. the 1cm seedling in net cage will turn pond from net cage in 8-10 days, 8-10 days seedlings survival rate in net cage is 50% left and right, it is to incubate stone and pick up being pressed in net cage body four angle bricks or goose that net cage turns seedling-growing method, then two people mention net cage slowly to walking on one side, seedling is risen to one jiao, net cage, gently to entering in larger basin, put into another nursery pond, put into quantity 20-30 ten thousand tail/mus, according to net cage seedling nursery time order and function, as the seedling that box is educated in 3-5 days, can, with putting a pond, surpass the seedling of educating for 5 days and will turn the concentrated training of next nursery pond seedling.
3. the requirement after putting into
Put into the nursery pond of 1cm seedling, in pond, must have 5% assorted pasture and water or manually place a small amount of water peanut.
4. secondary is grown seedlings water quality requirement and feeding method
1cm seedling is put into after secondary nursery pond one week without feeding, observes water body color, and water body color is dark tea green, and transparency is not too important, will add 300 kilograms of the pig manures that ferment after second week, and the pig manure after fermentation can not be too dry, and stack location.After the 3rd week, start to feed feed, feed protein feed, the soyabean protein powder that described protein feed is 10:4-6:2-3 by weight ratio, fly maggot powder, peanut powder form, and the granules processing with 40 order screen cloth sievings is respectively fed once sooner or later.Method is to add 500 grams of left and right granules with 1 barrel of water, stirringization slurry in bucket, full pool spilling head, examine water quality, as water quality overfertilization, can within one day, feed once at interval, because seedling also proceeds to enteron aisle, do not breathe, as you know, loach has three kinds of breathing patterns, and the cheek is breathed, skin is breathed, intestinal respiration.Loach has certain lethality when proceeding to intestinal respiration, water quality and feeding capacity to be controlled, regularly rise and copy a small amount of seedling, observe physique, whether there is saprolegniasis, whether belly is rubescent, if there is saprolegniasis symptom, and available 0.04% salt and 0.04% sodium bicarbonate mixture full pool spilling head, if belly is rubescent, food-intake is excessive, while turning intestinal respiration, cause death, the new water of annotating in right amount, reduces feeding amount.The seedling of feeding through 35-40 days 70% proceeds to intestinal respiration, starts turk, and lethality, between 15-20%, changes into enteron aisle breathing and starts by normal the breeding of mature loach procedure operation afterwards.Have ready conditions and can turn pond by the cage harvesting of certainly doing 7 order screen cloths again, effect is better, and feed ratio 0.75-1 kilogram grows one jin of loach containing 32% protein feed.When seedling turns intestinal respiration, calculate, through 4 months, feed and can reach per kilogram 120 tail left and right.
Claims (1)
1. a training seedling-growing method for two step flow process loach, is characterized in that comprising the following steps:
One, convenient controlled miniflow ability of swimming loach hatching method:
(1), build hatchery
Hatchery requires: long 5-7 rice, wide 1-1.5 rice, high 0.5-0.8 rice, and at the bottom of pond, one end is provided with discharge outlet, is provided with into water halter above the other end, and too smoothless at the bottom of pond, pool wall requires more smooth;
(2), incubator box is made
With round steel, be welded into cuboid framework, in base of frame, with round steel welding, do stull, round steel outside all encases with insulating tape, with polyethylene screen cloth except directly over surrounding and bottom seal, and strain;
(3), hatching water quality requirement
Spawning water is wanted precipitation twice, and way is as follows:
Be about to for the first time Ku Huo river course, pool water suction the first sedimentation basin, the little shape pond of the first described sedimentation basin for holding 1 kilostere; The second sedimentation basin is built in higher than near the place 1 meter of hatchery, and the second described sedimentation basin is for can hold 150m
3the cement pit of water, one jiao of cement pit is provided with gravity flow inlet channel and a pvc pipe road, this pvc pipe road pipeline is used for later rinse water mud sump, the emptying whole Chi Shui of energy is set, gravity flow inlet channel is located at the place higher than cement bottom layer 3-4cm, be connected with hatchery tap, in order to later stage hatching and miniflow water, use;
(4), water treatment
By water suction the first sedimentation basin, self-purification 4-5 days, then reaches 130-140m by first sedimentation basin water suction the second sedimentation basin
3after, with water purification peptide bacterium or sewage precious wait medicament all can, package insert usage amount increase 15-20% is pressed in medication metering, evenly splashes, and within after medication 22-25 hour, can be used as Spawning water;
(5), hatchery water level requires:
1. the hatchery depth of water requires high at 0.3-0.5 rice;
2. incubator box is inserted in hatchery, incubator box props up high 0.1-0.15 rice with brick;
(6), throw in quantity and the technical finesse of kind of loach:
1. the maternal individuality with 10-20 bar/kg, and bosom ovum feature is obvious; Obvious and the blue or green loach more than two ages of the sexual maturity of public this use 15-20 bar/kg, the maternal 250-350 tail that injects the medicament of hastening parturition is put in each hatchery, public this 500-700 tail, public this loach requires to complete and inject the medicament of hastening parturition at-17 o'clock at 15 o'clock in the afternoon same day, about 17 o'clock, put into hatchery, all kinds of loach will be rinsed once with clear water before putting into hatchery;
(7), the technical finesse of miniflow water and oxygenation:
1. when kind of a loach, put into hatchery after two hours, open the artesian water tap linking with the second sedimentation basin, be connected to a flexible pipe communicating with hatchery on tap, flexible pipe is placed in 10cm left and right in the water body of hatchery, makes water level remain on 4 ℃ of m left and right, keeps fine bourn amount 0.3m
3/ hour;
2. oxygenation
The aerator of capacity 40L/mm for oxygenation, two oxygenation heads are put in each hatchery, and 24 hours do not stop;
3. mating time with play kind of a loach time
Mate and oviposit is determined according to water temperature with playing kind of the loach time, and general 10 o'clock the next mornings or at 15 o'clock in afternoon, water temperature, between 20-32 ℃, plays kind of loach about at 10 o'clock in the morning; Water temperature is between 18-25 ℃, and kind of a loach about 15 o'clock, then removes kind of a loach in the afternoon, separately deals with, and incubator box is lifted into next hatchery, carries out next step operation;
4. miniflow water arrheas the time
Miniflow water arrheas the time, from kind of a loach, carries away hatchery Time Calculation, keeps water level in 30cm left and right, and miniflow water will keep 5-8 hour, according to the concentration adjustment of water quality in hatchery;
5. the hatching of ovum grain
In above-mentioned situation, ovum grain basic loose portion in hatchery is even, can not pile up, and membrane speed is relevant with water temperature, and general water temperature is at 25 ℃ when upper and lower, and ovum grain 32 hours is membrane substantially;
(8), oxygenation rule, seedling opening, lifting time
1. in general 25 ℃ of situations of water temperature, after 32 hours full membranes, if fine day, at 8 o'clock in the morning was taken out oxygenation head, and at 6 o'clock in afternoon put into, cloudy round-the-clock oxygenation;
2. opening is very important, generally, daytime can not opening, because if be fine day, the dead ovum that has egg membrane in the water of hatchery and do not hatch completely, to water body, cause certain pollution, pass through direct sunlight, in hatchery, can produce a lot of micro-bubbles, if after morning opening, seedling is uninterruptedly taken food, mistake is eaten down bubble as food, and generation bubble illness, be preferably in the lifting upper shed evening before yesterday, the 4th day morning of full membrane can lifting, that is to say opening in the 3rd day evening, opening time is 19 o'clock or 22 o'clock or during m seq 6, about at 7 o'clock in morning lifting time, overcast and rainy can the time period in the morning,
Lifting can be copied formula with water absorption type and net, and during lifting, seedling can not dewater;
Two, flow process race formula cultivating method
(1), nursery pond organic water is cultivated
1. preferably First Year was used the breeding of mature loach pond, became loach harvesting complete in year, pass the winter and freeze solarization, and mud is few, and area is at 1-1.5 mu;
2. not breeding loach first 20 days, add the new water of 10cm in pond, then full pond adds the live pig excrement of 5-8 ton, loosely sprinkles evenly, after three days, then adds the new water of 30cm, after 2 days placed separately, by worm for fishing speed, goes out, and goes up to specifications 3-5 and doubly measures full pool spilling head, for future use;
(2), cultivate the requirement of opening seedling hanging net cage pool inner water matter
1. opening seedling calculates for 15 days from the lifting of hatchery, with 1-1.5 mu culturing pool, draining is cleaned up the pond, at the bottom of pond, there is no mud as far as possible, fine day shines 4-5 days, then add the new water in 10cm left and right, 50 kilograms of change slurries of available quicklime, full pool spilling head, or by metering, increase by 30% full pool spilling head after 4-5 days with chlorine dioxide, from cultivating in organic pond suction 25cm organic water to nursery pond, add again the new water in 15cm left and right, general fine day completed two water inlets before at 10 o'clock in the morning, the next morning is observed water quality situation, if water quality reaches tea green, transparency reaches 10-15cm, the overall average 45cm of the depth of water, next by worm for fishing speed, go out by using metering to add 30% full pool spilling head, 3-5 days stand-by, calculated the lifting time, during lifting 17-18 noon before that day, seedling net cage is hung, seedling net cage is to be made with 60 order screen cloths, each net cage is decontroled mouthful seedling 4-5 ten thousand tails, by the opening seedling quantity hatching, calculate the quantity that net cage hangs, can drop into net cage morning next day the opening seedling in hatchery,
2. the special-purpose yolk powder of aquatic products for seedling opening material, 1,000,000 10-20 gram of left and right yolk powders tail seedling for, encase with 100 order screen cloths, and then use 1-2 premium on currency dissolves, and is spilled into hatchery, and the lifting time must complete in 2 hours;
3. under seedling after net cage, at 18 o'clock in afternoon will feed, feed feeds utilized very important, feed self-control feed, the soyabean protein powder that described self-control feed is is 10:5-6:2-3:1-2 by weight ratio, fly maggot powder, peanut powder, corn flour forms, by 80 order screen cloth processing, sift out and form, one barrel of water is made a call in former pond, do not want overfill, with about 40 grams self-control feeds of 60 order screen cloth bag, in bucket, shake for several times, until feed is dissolved, in the whole network case, splash, twice of every day, early 7 o'clock, 18 o'clock evenings, will observe water quality situation and transparency every day, water body overrich, easily there is bubble illness in seedling, at this moment add appropriate new water, water body is excessively light, seedling poor growth should be taken out the appropriate organic water of note in organic pond,
4. seedling, by the growth of 8-10 days in net cage, reaches 1cm left and right, turns pond;
(3), 1cm seedling turns pond, pool inner water matter and specification requirement
1. the culturing pool of crossing with solarization pond, clear pond, idle 1.2 mu of left and right of area, from suction 30-40cm organic water in organic pond, then adds the new water of 10-12cm, then with the worm for fishing speed by specification that goes out, measures full pool spilling head;
2. the 1cm seedling in net cage will turn pond from net cage in 8-10 days, it is to incubate stone and pick up being pressed in net cage body four angle bricks or goose that net cage turns seedling-growing method, then two people mention net cage slowly to walking on one side, seedling are risen to one jiao, net cage, gently to entering in larger basin, put into another nursery pond, put into quantity 20-30 ten thousand tail/mus, according to net cage seedling nursery time order and function, as the seedling that box is educated in 3-5 days, can, with putting a pond, surpass the seedling of educating for 5 days and will turn the concentrated training of next nursery pond seedling;
3. the requirement after putting into
Put into the nursery pond of 1cm seedling, in pond, must have a small amount of assorted pasture and water or manually place a small amount of water peanut;
4. secondary is grown seedlings water quality requirement and feeding method
1cm seedling is put into after secondary nursery pond one week without feeding, observe water body color, water body color is dark tea green, transparency is not too important, after second week, to add the pig manure 280-320 kilogram fermenting, pig manure after fermentation can not be too dry, stack location, after the 3rd week, start to feed feed, feed protein feed, the soyabean protein powder that described protein feed is is 10:4-6:2-3 by weight ratio, fly maggot powder, peanut powder forms, the granules processing with 40 order screen cloth sievings, sooner or later respectively feed once, method is to add 500 grams of left and right granules with 1 barrel of water, stirringization slurry in bucket, full pool spilling head, examine water quality, as water quality overfertilization can be fed once at interval for one day, loach has certain lethality when proceeding to intestinal respiration, water quality and feeding capacity to be controlled, to regularly rise and copy a small amount of seedling, observe physique, whether there is saprolegniasis, whether belly is rubescent, if there is saprolegniasis symptom, available 0.04% salt and 0.04% sodium bicarbonate mixture full pool spilling head, if belly is rubescent, food-intake is excessive, while turning intestinal respiration, cause death, the new water of appropriate filling, reduce feeding amount, the seedling of feeding through 35-40 days 70% proceeds to intestinal respiration, start turk, after changing into enteron aisle breathing, start by normal the breeding of mature loach procedure operation.
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