A kind of golden cuttlefish parent is raised and train and germination method in advance
Technical field
The present invention relates to a kind of cultivation of the parent of aquatic livestock and offspring breeding method, especially a kind of parents of golden cuttlefish
It raises and train and germination method in advance.
Background technique
Golden cuttlefish artificial breeding has just started in the northern province such as Liaoning, Shandong and Jiangsu, and the supply of golden cuttlefish seed is very big
Limit golden cuttlefish cultivation go on smoothly.Northern province winter is cold, often meets with irregular or/and prolonged low
Temperature, ocean temperature can be down to 0 DEG C or so, often be difficult successfully the golden cuttlefish of cultivation overwintering.As can taking measures to ensure its peace
Complete overwintering, until emerging in advance around the Spring Festival, profit is rich.Under normal circumstances, golden cuttlefish seed can catch greatly for 6 ~ July, arrive
The period of pond culture only has 3 months, and golden cuttlefish is long less than ideal specification.If the golden cuttlefish of pond culture can be made in room
Interior overwintering, seed needed for being obtained with artificial breeding in 3 ~ April of next year, the golden cuttlefish pond culture period is 6 months.
Golden cuttlefish adult and the young like live bait of ingesting, and incubating oosperm water must be limpid, significantly limit the popularization of the kind,
The golden cuttlefish parent that a kind of high-yield, efficient, environmentally friendly is badly in need of in society, which is raised and train with seed breeding mode, to be solved golden cuttlefish parent and raises and train
And bait and quality problem during seed breeding.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of golden cuttlefish parent raise and train and
Germination method in advance, this method carry out parent using the integrated ecosystem of golden cuttlefish parent and exopalaemon carinicauda, children crow and oppossum shrimp and tame and docile
It supports and children crow is cultivated, hatchery can satisfy requirement of the incubating oosperm to water quality, easy to operate.
The technical problem to be solved by the present invention is to what is realized by technical solution below.The present invention is a kind of Golden Crow
Crafty parent is raised and train and germination method in advance, its main feature is that, its step are as follows:
(1) pond selection and transformation are raised and train;The described pond of raising and train selects to raise and train pond as common Tu Chi with transforming as, area 100 ~ 200
m2, Double layer thermal insulation greenhouse is built above the depth of water 2 ~ 3 m, Tu Chi, bottom of pond is laid with stainless steel heating pipe and micro-pore oxygenation pipeline.
(2) hatchery selection and transformation;The hatchery selects the shrimp crab idle for autumn and winter with hatchery is transform as
Nursery workshop, 20 ~ 60 m of cement pool area2, the fine sand of bottom of pond one layer of 5 ~ 10 cm thickness of laying, 0.1 ~ 1.0 mm of fine sand granularity.
(3) exopalaemon carinicauda is voluntarily bred;Raise and train for 9 ~ October pond put in a suitable place to breed weight be 2 ~ 3.5 g exopalaemon carinicauda, density 3 ~
5 tails/m2, make it be used as golden cuttlefish parent to raise and train bait from numerous, during which feed exopalaemon carinicauda and strengthen bait, bait composition is as follows:
15 ~ 30 % miscella of fish slurry albumen powder, 4 ~ 8 %
Russian 10 ~ 20 % of white fish meal strengthens 2 ~ 4 % of fish oil
10 ~ 20 % shrimp of fermented bean dregs, 2 ~ 4 % of compound vitamin
5 ~ 10 % complex enzyme formulation of squid powder, 2 ~ 4 %
5 ~ 10 % Vitamin C Polyphosphate of Se-enriched yeast, 0.5 ~ 1 %
5 ~ 10 % Vitwas E of wheat-middlings, 0.5 ~ 1 %
5 ~ 10 % antibacterial peptide of fermented maize, 0.5 ~ 1 %
4 ~ 8 % probiotic lactobacillus of soybean lecithin, 0.1 ~ 0.2 %;
(4) parent is selected and is put in a suitable place to breed;It collects artificial breeding 10 ~ November or wild golden cuttlefish health parent is put into and raises and train pond and educate
Fertilizer enters before pond with 2 × 10-5~5×10-5Povidone iodine impregnate 5 ~ 10 min, 1 ~ 3/m of breeding density2, 14 ~ 20 DEG C of water temperature;
(5) collect ovum;Parent is raising and train pond suspension mesh sheet collection ovum after 90 ~ 120 d are raised and train, and the mesh sheet for being filled with ovum is immersed in 0.5 ×
10-5~1×10-5Betagen Solution in sterilize 5 ~ 10 min, then move on to hatchery concentrate hatching;
(6) hatching is temporarily supported and concentrated to fertilized eggs;Fertilized eggs temporarily support 17 ~ 20 DEG C of water temperature, and mesh sheet ovum grain number amount reaches 100 in hatchery
~ 200/m2Concentration hatching is carried out, 24 ~ 27 DEG C of water temperature of hatching, 15 ~ 20 d emergence are concentrated;
(7) oppossum shrimp voluntarily breeds;3 ~ 5 d before emergence, using raising and train pond from numerous oppossum shrimp, oppossum shrimp breeding density 100 ~ 200/
m2, it 21 ~ 24 DEG C of water temperature, during which feeds oppossum shrimp and strengthens bait, bait composition is as follows:
15 ~ 30 % of cod meal fermentation, 3 ~ 6 % of vinasse
10 ~ 20 % of domestic fish meal strengthens 2 ~ 4 % of fish oil
10 ~ 20 % shrimp of fermented bean dregs, 2 ~ 4 % of compound vitamin
10 ~ 20 % complex enzyme formulation of fermenting wheat bran, 2 ~ 4 %
5 ~ 10 % shrimp of wheat-middlings, 1 ~ 2 % of composite polymineral
5 ~ 10 % antibacterial peptide of fermented maize, 0.5 ~ 1 %
4 ~ 8 % probiotic lactobacillus of soybean lecithin, 0.1 ~ 0.2 %;
(8) children crow is cultivated;Young crow passes directly to raise and train pond cultivation after hatching, and cultivates 21 ~ 24 DEG C of water temperature, completes children after 30 ~ 40 d
Crow is cultivated, and pond is sold out.
A kind of golden cuttlefish parent of the present invention is raised and train and germination method in advance, is into lower preferred technical solution:
The described pond of raising and train selects to raise and train pond as common Tu Chi with transforming as, 150 m of area2, build above the depth of water 2.5 m, Tu Chi double
Layer insulation greenhouse, bottom of pond are laid with stainless steel heating pipe and micro-pore oxygenation pipeline.
A kind of golden cuttlefish parent of the present invention is raised and train and germination method in advance, is into lower preferred technical solution:
The hatchery selects the shrimp crab nursery workshop idle for autumn and winter with hatchery is transform as, 40 m of cement pool area2, bottom of pond
It is laid with the fine sand of one layer of 8cm thickness, fine sand granularity 0.5mm.
A kind of golden cuttlefish parent of the present invention is raised and train and germination method in advance, is into lower preferred technical solution:
It is to raise and train pond 9 ~ October to put the exopalaemon carinicauda that weight is 2.5 ~ 3.0 g in a suitable place to breed that the exopalaemon carinicauda, which is voluntarily bred, 4 tail of density/
m2, make it be used as golden cuttlefish parent to raise and train bait from numerous, during which feed exopalaemon carinicauda and strengthen bait, bait composition is as follows:
20.6 % miscella of fish slurry albumen powder, 6 %
Russian white fish meal 15% strengthens 3 % of fish oil
13 % shrimp compound vitamin 3% of fermented bean dregs
8 % complex enzyme formulation of squid powder, 3 %
6 % Vitamin C Polyphosphate 0.7% of Se-enriched yeast
8% Vitwas E of wheat-middlings, 0.8 %
7 % antibacterial peptide of fermented maize, 0.8 %
5% probiotic lactobacillus of soybean lecithin, 0.1 %.
A kind of golden cuttlefish parent of the present invention is raised and train and germination method in advance, is into lower preferred technical solution:
The parent selects to be put into collect artificial breeding or wild golden cuttlefish health parent 10 ~ November with putting in a suitable place to breed and raise and train pond and educate
Fertilizer enters before pond with 3 × 10-5Povidone iodine impregnate 6 min, 2/m of breeding density2, 16 DEG C of water temperature.
A kind of golden cuttlefish parent of the present invention is raised and train and germination method in advance, is into lower preferred technical solution:
The ovum that integrates is parent after 105d is raised and train, and is raising and train pond suspension mesh sheet collection ovum, the mesh sheet for being filled with ovum is immersed in 0.8 × 10-5
Betagen Solution in sterilize 7min, then move on to hatchery concentrate hatching.
A kind of golden cuttlefish parent of the present invention is raised and train and germination method in advance, is into lower preferred technical solution:
The fertilized eggs temporarily support and concentrate hatching be fertilized eggs temporarily support 18 DEG C of water temperature, in hatchery mesh sheet ovum grain number amount reach 150/
m2Concentration hatching is carried out, 25 DEG C of water temperature of hatching, 18 d emergence are concentrated.
A kind of golden cuttlefish parent of the present invention is raised and train and germination method in advance, is into lower preferred technical solution:
The oppossum shrimp voluntarily breeds as 4 d before emergence, using raising and train pond from numerous oppossum shrimp, 150/m of oppossum shrimp breeding density2, water temperature
It 23 DEG C, during which feeds oppossum shrimp and strengthens bait, bait composition is as follows:
18.8 % of cod meal fermentation, 4 % of vinasse
15 % of domestic fish meal strengthens 3 % of fish oil
15 % shrimp of fermented bean dregs, 3 % of compound vitamin
15 % complex enzyme formulation 3% of fermenting wheat bran
8 % shrimp composite polymineral 2% of wheat-middlings
7% antibacterial peptide of fermented maize, 1 %
6 % probiotic lactobacillus of soybean lecithin, 0.2 %.
A kind of golden cuttlefish parent of the present invention is raised and train and germination method in advance, is into lower preferred technical solution:
It is to pass directly to raise and train pond cultivation after young crow hatches that the children crow, which is cultivated, cultivates 22 DEG C of water temperature, pond is gone out after 35d and is sold.
The method of the present invention carries out parent and raises and train using golden cuttlefish parent and exopalaemon carinicauda, children crow and the integrated ecosystem of oppossum shrimp
And children crow is cultivated, hatchery can satisfy requirement of the incubating oosperm to water quality.Golden cuttlefish parent can ingest during raising and train
Exopalaemon carinicauda, and exopalaemon carinicauda breeding and growth ability are very strong, can continuously breed within 1 year, can complete one within 2 ~ 3 months
Life cycle meets demand of the golden cuttlefish parent to live bait;Equally, the breeding of oppossum shrimp and growth ability are also very strong, and 1 year
Can continuously breed, a life cycle can be completed within 1 ~ 2 month, meet demand of the young crow to live bait, thus realize high yield,
Efficiently, environmentally friendly target is raised and train and the demand of germination method in advance with meeting existing golden cuttlefish parent.
(1) exopalaemon carinicauda is the bait that golden cuttlefish is fond of, and exopalaemon carinicauda breeding and growth ability are very strong, pass through bait
Strengthen, sufficient nutrition is provided for golden cuttlefish parent, is conducive to cuttlefish and regains one's strength, enhances cold-resistant, disease resistance, solve to raise and train
In the process golden cuttlefish bait it is insufficient or excessive and thus the ink-jet of bring golden cuttlefish and fattening water quality deterioration the problems such as, facilitate
Parent is overwintering and lays eggs.
(2) by raising and train pond transformation, deepen the depth of water, build Double layer thermal insulation greenhouse, it is ensured that raise and train water temperature, facilitate
Parent raises and train, exopalaemon carinicauda and oppossum shrimp are cultivated from numerous, young crow etc..
(3) oppossum shrimp is the bait that young crow is fond of, and oppossum shrimp breeding and growth ability are very strong, are strengthened by bait, for children
Crow provides sufficient nutrition, facilitates the growth and survival of young crow.
(4) golden cuttlefish has latent husky habit, and hatchery bottom is laid with one layer of fine sand, helps to purify water, just to incubate young crow
Quiet habitat is provided and conceals space, improves its disease resistance.
(5) by cultivating and strengthen live bait exopalaemon carinicauda and oppossum shrimp, it ensure that the freshness of parent and young bait and not
Water quality is polluted, can freely be ingested, remaining bait can voluntarily be bred, and be ensure that the stability and sustainability of bait, avoided
The influence that weather etc. supplies bait.
(6) by cultivating oppossum shrimp and children crow, the secondary use that parent raises and train pond is realized, while hatchery can be vacateed and be used for
Shrimp waste spring seed breeding, provides new growth point for enterprise.
(7) strengthen oppossum shrimp feeding technology, preferably solve bottom of pond sand bed nigrescence in hatchery is smelly and cultivation water deteriorates etc.
Problem.
(8) golden cuttlefish indoor wintering is carried out using the shrimp crab nursery workshop that autumn and winter leaves unused, next year realization is emerged in advance, can
To make full use of idle shrimp crab nursery workshop.
(9) 14 ~ 20 DEG C of water temperature ranges are very suitable to that golden cuttlefish is overwintering and ingest, and lower than 14 DEG C golden cuttlefishes are hardly taken the photograph
Food, and it is higher than 20 DEG C of susceptible disease death.
(10) by each sterilizing part, parent is raised and train, incubating oosperm and larval culture environment are excellent.
Specific embodiment
The specific technical solution of the present invention described further below, in order to which those skilled in the art is further understood that
The present invention, without constituting the limitation to its right.
Embodiment 1, a kind of golden cuttlefish parent is raised and train and germination method in advance, and its step are as follows: (1) raising and train pond selection and change
It makes;The described pond of raising and train selects to raise and train pond as common Tu Chi with transforming as, 100 m of area2, build above the depth of water 2m, Tu Chi double
Layer insulation greenhouse, bottom of pond are laid with stainless steel heating pipe and micro-pore oxygenation pipeline.
(2) hatchery selection and transformation;The hatchery selects the shrimp crab idle for autumn and winter with hatchery is transform as
Nursery workshop, cement pool area 20m2, the fine sand of bottom of pond one layer of 5 cm thickness of laying, fine sand granularity 0.1mm.
(3) exopalaemon carinicauda is voluntarily bred;Raise and train for 9 ~ October pond put in a suitable place to breed weight be 2 g exopalaemon carinicauda, 3 tail of density/
m2, make it be used as golden cuttlefish parent to raise and train bait from numerous, during which feed exopalaemon carinicauda and strengthen bait, bait composition is as follows:
17.8 % miscella of fish slurry albumen powder, 4 %
Russian white fish meal 10% strengthens 2 % of fish oil
20 % shrimp of fermented bean dregs, 2 % of compound vitamin
7 % complex enzyme formulation of squid powder, 4 %
8 % Vitamin C Polyphosphate of Se-enriched yeast, 0.5 %
5 % Vitwas E 0.5% of wheat-middlings
10 % antibacterial peptide of fermented maize, 1 %
8 % probiotic lactobacillus of soybean lecithin, 0.2 %;
(4) parent is selected and is put in a suitable place to breed;It collects artificial breeding 10 ~ November or wild golden cuttlefish health parent is put into and raises and train pond and educate
Fertilizer enters before pond with 2 × 10-5Povidone iodine impregnate 5 min, 1/m of breeding density2, 14 DEG C of water temperature;
(5) collect ovum;Parent is raising and train pond suspension mesh sheet collection ovum, the mesh sheet for being filled with ovum is immersed in 0.5 × 10 after 90 d are raised and train-5
Betagen Solution in sterilize 5 min, then move on to hatchery concentrate hatching;
(6) hatching is temporarily supported and concentrated to fertilized eggs;Fertilized eggs temporarily support 17 DEG C of water temperature, in hatchery mesh sheet ovum grain number amount reach 100/
m2Concentration hatching is carried out, 24 DEG C of water temperature of hatching, 15 d emergence are concentrated;
(7) oppossum shrimp voluntarily breeds;The 3d before emergence, using raising and train pond from numerous oppossum shrimp, 100/m of oppossum shrimp breeding density2, water temperature 21
DEG C, it during which feeds oppossum shrimp and strengthens bait, bait composition is as follows:
The fermentation of cod meal 24.4% 3 % of vinasse
10 % of domestic fish meal strengthens 4 % of fish oil
10 % shrimp of fermented bean dregs, 4 % of compound vitamin
10 % complex enzyme formulation of fermenting wheat bran, 4 %
10 % shrimp of wheat-middlings, 2 % of composite polymineral
10 % antibacterial peptide 0.5% of fermented maize
8 % probiotic lactobacillus 0.1% of soybean lecithin;
(8) children crow is cultivated;Young crow passes directly to raise and train pond cultivation after hatching, and cultivates 21 DEG C of water temperature, and children crow is completed after 30 d and is cultivated,
Pond is sold out.
Embodiment 2, a kind of golden cuttlefish parent is raised and train and germination method in advance, and its step are as follows:
(1) pond selection and transformation are raised and train;The described pond of raising and train selects to raise and train pond as common Tu Chi with transforming as, 200 m of area2,
Double layer thermal insulation greenhouse is built above the depth of water 3 m, Tu Chi, bottom of pond is laid with stainless steel heating pipe and micro-pore oxygenation pipeline.
(2) hatchery selection and transformation;The hatchery selects the shrimp crab idle for autumn and winter with hatchery is transform as
Nursery workshop, 60 m of cement pool area2, the fine sand of bottom of pond one layer of 10 cm thickness of laying, 1.0 mm of fine sand granularity.
(3) exopalaemon carinicauda is voluntarily bred;Raise and train for 9 ~ October pond put in a suitable place to breed weight be 3.5 g exopalaemon carinicauda, 5 tail of density/
m2, make it be used as golden cuttlefish parent to raise and train bait from numerous, during which feed exopalaemon carinicauda and strengthen bait, bait composition is as follows:
20.6 % miscella of fish slurry albumen powder, 6 %
Russian white fish meal 15% strengthens 3 % of fish oil
13 % shrimp compound vitamin 3% of fermented bean dregs
8 % complex enzyme formulation of squid powder, 3 %
6 % Vitamin C Polyphosphate 0.7% of Se-enriched yeast
8% Vitwas E of wheat-middlings, 0.8 %
7 % antibacterial peptide of fermented maize, 0.8 %
5% probiotic lactobacillus of soybean lecithin, 0.1 %;
(4) parent is selected and is put in a suitable place to breed;It collects artificial breeding 10 ~ November or wild golden cuttlefish health parent is put into and raises and train pond and educate
Fertilizer enters before pond with 5 × 10-5Povidone iodine impregnate 10 min, 3/m of breeding density2, 20 DEG C of water temperature;
(5) collect ovum;Parent is raising and train pond suspension mesh sheet collection ovum, the mesh sheet for being filled with ovum is immersed in 1 × 10 after 120 d are raised and train-5
Betagen Solution in sterilize 10 min, then move on to hatchery concentrate hatching;
(6) hatching is temporarily supported and concentrated to fertilized eggs;Fertilized eggs temporarily support 20 DEG C of water temperature, in hatchery mesh sheet ovum grain number amount reach 200/
m2Concentration hatching is carried out, 27 DEG C of water temperature of hatching, 20 d emergence are concentrated;
(7) oppossum shrimp voluntarily breeds;5 d before emergence, using raising and train pond from numerous oppossum shrimp, 200/m of oppossum shrimp breeding density2, water temperature
It 24 DEG C, during which feeds oppossum shrimp and strengthens bait, bait composition is as follows:
18.8 % of cod meal fermentation, 4 % of vinasse
15 % of domestic fish meal strengthens 3 % of fish oil
15 % shrimp of fermented bean dregs, 3 % of compound vitamin
15 % complex enzyme formulation 3% of fermenting wheat bran
8 % shrimp composite polymineral 2% of wheat-middlings
7% antibacterial peptide of fermented maize, 1 %
6 % probiotic lactobacillus of soybean lecithin, 0.2 %;
(8) children crow is cultivated;Young crow passes directly to raise and train pond cultivation after hatching, and cultivates 24 DEG C of water temperature, and children crow is completed after 40 d and is cultivated,
Pond is sold out.
Embodiment 3, a kind of golden cuttlefish parent is raised and train and germination method is tested in advance:
Experimental period address: 2017 ~ 2018 years in the big slab bridge Tu Chi in Lianyun District and indoor raising of seedling workshop.
Experimentation: it raises and train on September 15th, 2017 pond and puts the exopalaemon carinicauda that weight is 2.5 ~ 3.5 g, 4 tails of density/m in a suitable place to breed2,
Make it be used as golden cuttlefish parent to raise and train bait from numerous, during which feed exopalaemon carinicauda and strengthen bait, bait composition is as follows:
17.9 % miscella of fish slurry albumen powder, 5 %
Russian 15 % of white fish meal strengthens 3 % of fish oil
15 % shrimp of fermented bean dregs, 3 % of compound vitamin
8 % complex enzyme formulation of squid powder, 3 %
8 % Vitamin C Polyphosphate of Se-enriched yeast, 0.5 %
10 % Vitwas E of wheat-middlings, 1 %
5 % antibacterial peptide of fermented maize, 0.5 %
5 % probiotic lactobacillus of soybean lecithin, 0.1 %.
Main nutrient composition (dry weight) analysis of bait of the present invention see the table below:
Crude protein/% |
Crude fat/% |
Carbohydrate/% |
58.49 |
15.54 |
14.06 |
The wild golden cuttlefish health parent in collection on 16 ~ October 21 October coastal waters, which is put into, raises and train pond fattening, enters before pond with 3 × 10-5
Povidone iodine impregnate 6 min, 2/m of breeding density2, totally 300 parents, (associated temperature refers generally to morning to 14 ~ 20 DEG C of water temperature
The water temperature of upper 10:00 measurement).Parent is after 106 d are raised and train, i.e., on 2 2nd, 2018, is raising and train pond suspension mesh sheet collection ovum, collection
The mesh sheet of full ovum is immersed in 0.7 × 10-5Betagen Solution in sterilize 8 min, then move on to hatchery concentrate hatching.Hatchery
The bottom of pond sand bed depth of water maintains 200 cm, and 5 ~ 10 cm are laid with stainless steel heating pipe and micro-pore oxygenation pipeline, fertilization above fine sand
Ovum temporarily supports 17 ~ 20 DEG C of water temperature, and mesh sheet ovum grain number amount reaches 150 ~ 160/m in hatchery2Carry out concentration hatching.
On 2 8th, 2018, hatchery started to concentrate hatching, 24 ~ 27 DEG C of water temperature, emerged within i.e. 26 days 2 months after 18 d.Going out
4 d before seedling, i.e., 22 days 2 months, using raising and train pond from numerous oppossum shrimp, 150 ~ 160/m of oppossum shrimp breeding density2, 21 ~ 24 DEG C of water temperature, the phase
Between feed oppossum shrimp strengthen bait, bait composition it is as follows:
24.4 % of cod meal fermentation, 4 % of vinasse
15 % of domestic fish meal strengthens 3 % of fish oil
15 % shrimp of fermented bean dregs, 3 % of compound vitamin
15 % complex enzyme formulation of fermenting wheat bran, 3 %
5 % shrimp of wheat-middlings, 1 % of composite polymineral
5 % antibacterial peptide of fermented maize, 0.5 %
6 % probiotic lactobacillus of soybean lecithin, 0.1 %
Main nutrient composition (dry weight) analysis of bait of the present invention see the table below:
Crude protein/% |
Crude fat/% |
Carbohydrate/% |
38.42 |
11.15 |
31.13 |
Young crow passes directly to raise and train pond cultivation after hatching, and cultivates 21 ~ 24 DEG C of water temperature, went out pond sale on April 2 after 35 d.
The wild golden cuttlefish health parent in collection on 16 ~ October 21 October coastal waters, which is put into, raises and train pond fattening, parent weight 150
~ 175 g/ only, parent stock 300, are raised and train, dead 46, parent raises and train survival rate 84.67%, average weight by 106 d
(315 ± 37) g/ only, is realized and is successfully laid eggs.Hatch 210 m of pool area2, fertilized eggs quantity about 3.2 ten thousand, hatch about 2.5 ten thousand
Young crow, domestication pool are bred as about 1.7 ten thousand tails children crow.
This experiment carries out the overwintering and idle shrimp crab nursery pond of golden cuttlefish using idle shrimp soil pond greenhouse and is fertilized
Hatching is temporarily supported and concentrated to ovum, carries out feeding for parent and the young using from numerous exopalaemon carinicauda and oppossum shrimp, solves Tu Chi and blacks hair
The seed of golden cuttlefish carrys out source problem in smelly, cultivation water deterioration and golden cuttlefish breeding process, to solve limitation golden cuttlefish
The bottleneck problem in pond culture seed source, and artificially extend 3 months golden cuttlefish pond culture periods, it is suitably applied golden cuttlefish
The large scale cultivating of parent and the young during artificial seedling rearing.