CN107455293A - A kind of quick cultural method for obtaining high-quality large yellow croaker - Google Patents
A kind of quick cultural method for obtaining high-quality large yellow croaker Download PDFInfo
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- CN107455293A CN107455293A CN201710762236.2A CN201710762236A CN107455293A CN 107455293 A CN107455293 A CN 107455293A CN 201710762236 A CN201710762236 A CN 201710762236A CN 107455293 A CN107455293 A CN 107455293A
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- yellow croaker
- large yellow
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
A kind of quick cultural method for obtaining high-quality large yellow croaker, belongs to technical field of aquaculture.This method carries out discontinuity to large yellow croaker in large yellow croaker cultivation stages and fed and Nature enemy, is specially:1)Continuously fed 32 days after large yellow croaker juvenile fish is hungry 8 days, once drawn in the net to train when hungry 4 days, and by this circulate operation and fed;2)Large yellow croaker adult fish is listing advance behavior phase 40d Nature enemy, is once drawn in the net to train every 10 days during Nature enemy.Beneficial effects of the present invention:The intermittent starvation for implementing appropriateness to large yellow croaker juvenile fish is coerced, and excites its compensatory growth potential, and its survival rate, Feeding Velocity and bait utilization ratio are improved to a certain extent, and the speed of growth of fish body is accelerated.Appropriate Nature enemy is carried out to two age large yellow croaker adult fishes before listing so that large yellow croaker build and meat quality be improved significantly, increase its market value.
Description
Technical field
The invention belongs to technical field of aquaculture, and in particular to a kind of quick cultivation side for obtaining high-quality large yellow croaker
Method.
Background technology
Large yellow croaker(Pseudosciaena crocea), Perciformes, Sciaenidae, yellow croaker category.It is also known as yellow croaker, big fresh, big
Yellow croaker.It is traditional " four big marine products " to occupy China(Large yellow croaker, little yellow croaker, hairtail, inkfish)First of, it is that the important seawater of south China is supported
Breeding fish.With developing rapidly for large yellow croaker aquaculture, the artificial propagation and breeding way blindly fallen behind causes cultured large yellow croaker
Quality deterioration phenomenon is further obvious, be mainly shown as cultured large yellow croaker compared with Wild Rhubarb fish show body colour is greyish white, build is too fat to move,
Meat is soft, fat content is high, not delicious etc. enough defective mode of taste, causes cultured large yellow croaker market economy benefit to fall sharply.This
Outside, a large amount of mixed feeds are used in large yellow croaker breeding process, routinely feed mode, juvenile fish robs food phenomenon unobvious, therefore meeting
The feed for causing to feed can not be ingested in time, cause greatly to waste, while the feed not being ingested dissolves it in water body
After ruin water quality, destroy breeding environment.In order to improve efficiency of feed utilization, its destruction to breeding environment is reduced, is improved big
The speed of growth and meat quality of yellow croaker, it is necessary to that takes science feeds mode, reduces the consumption of bait, reduce cultivation into
This.
Intermittent bait throwing in pattern reasonable in design can reach this effect, and reason is that fish generally have compensatory growth
Feature, i.e., after by hungry, subalimentation or other unsuitable environmental conditions stress, if stress disappears, fish in a period of time
Class can be by accelerating Feeding Velocity, improving feed efficiency and grazing rate to obtain the life more than unscared normal individual
Long speed.For the large yellow croaker adult fish that will be listed, by appropriate Nature enemy, its meat and build can be improved, because,
Under starvation conditions, large yellow croaker needs to decompose own fat to maintain needed for physiological activity, and fish body fat content is remarkably decreased, reachable
To the purpose of increase meat quality and improvement build.
The content of the invention
The problem of existing for prior art, it is an object of the invention to design to provide a kind of quick acquisition high-quality rheum officinale
The technical scheme of the cultural method of fish.
Described a kind of quick cultural method for obtaining high-quality large yellow croaker, it is characterised in that large yellow croaker cultivation stages are to big
Yellow croaker progress discontinuity is fed and Nature enemy, is specially:
1)Continuously fed 32 days after large yellow croaker juvenile fish is hungry 8 days, once drawn in the net to train when hungry 4 days, and by this circulation behaviour
Make and feed;
2)Large yellow croaker adult fish is listing advance behavior phase 40d Nature enemy, is once drawn every 10 days during Nature enemy
Net training.
A kind of described quick cultural method for obtaining high-quality large yellow croaker, it is characterised in that large yellow croaker juvenile fish cultivation stages
It is divided into two stages of indoor cement pit and cage culture, water is in ring by adjusting water inlet angle in cement pit cultivation stages
Stream mode, possess certain water velocity.
Described a kind of quick cultural method for obtaining high-quality large yellow croaker, it is characterised in that 3 monthly age juvenile fish carry out indoor
Cement is pool cultivated, and cement pit water inlet connects pvc pipe, is continuously fed 32 days after what is used feed frequency as hungry 8 days, hungry 4 days
Shi Jinhang is once drawn in the net to train, and circulate operation and feeds according to this, and pvc pipe angle is adjusted in breeding process, promotes the pool inner water bodily form
Into circulation, possess certain water velocity;Juvenile fish is transferred in the net cage of coastal waters before surviving the winter and cultivated, is connected after same progress is hungry 8 days
It is continuous to feed 32 days, once drawn in the net to train when hungry 4 days, according to this circulate operation with feed.
The present invention rheum officinale fish culture early stage using prescribe a time limit feed by the way of promote fish speed and food conversion
The intermittent Sinl'Perca chuatsT that efficiency improves is fed, and reduces feed coefficient, and growth is accelerated, when large yellow croaker reaches listing specification,
The Nature enemy of certain time is carried out, improves large yellow croaker external morphology, increase muscles of Pseudosciaena crocea quality, lifting rheum officinale fish market is competing
Power and market value are striven, to obtain more preferable economic well-being of workers and staff.
Beneficial effects of the present invention:The intermittent starvation for implementing appropriateness to large yellow croaker juvenile fish is coerced, and excites its compensatory growth
Potential, its survival rate, Feeding Velocity and bait utilization ratio are improved to a certain extent, and the speed of growth of fish body is accelerated.
Two age large yellow croaker adult fishes before listing are carried out with appropriate Nature enemy so that large yellow croaker build and meat quality are substantially changed
It is kind, increase its market value.
Embodiment
Further illustrate the present invention with reference to embodiments.
The present invention changes original mode continuously fed daily, and fish are implemented at intermittent starvation during cultivation
Reason, that is, change it is existing feed frequency, make full use of fish compensatory growth mechanism, constantly excite its compensatory growth potential, make children
The survival rate and bait utilization ratio of fish are all improved, and the speed of growth of fish body is accelerated.It is right before adult fish reaches listing specification
Marketable fish carries out Nature enemy, reduces fat content in muscle, improves its build and meat quality.The intensity of starvation stress is foster
Key in growing, starvation time is long, and very little, large yellow croaker juvenile fish ingests deficiency for bait throwing in, will suppress to grow, constitution is reduced and is also easy to
It is ill;Starvation time is too short, then can not fully excite compensatory growth potentiality.Therefore, it is crucial to search out suitable hungry intensity.
In addition, Nature enemy time setting completely is reasonable, starvation time is oversize, and fish body resistance reduces, and may cause mortality.
The most preferably complete starvation time of mode and adult fish is fed in order to obtain the optimal of large yellow croaker juvenile fish cultivation, the present invention devises following examination
Test embodiment.
Specifically implementation is the present invention:
Large yellow croaker progress discontinuity is fed large yellow croaker cultivation stages and Nature enemy, are specially:
1)Continuously fed 32 days after large yellow croaker juvenile fish is hungry 8 days, once drawn in the net to train when hungry 4 days, and by this circulation behaviour
Make and feed, wherein large yellow croaker juvenile fish cultivation stages are divided into two stages of indoor cement pit and cage culture, enter in 3 monthly age juvenile fish
Row indoor cement pit cultivation, cement pit water inlet connect pvc pipe, are continuously fed 32 days after what is used feed frequency to be hungry 8 days, famine
Once drawn in the net to train when starving 4 days, circulate operation and fed according to this, regulation pvc pipe angle, promotes pool inner water in breeding process
Body forms circulation, possesses certain flow velocity;Juvenile fish is transferred in the net cage of coastal waters before surviving the winter and cultivated, is connected after same progress is hungry 8 days
It is continuous to feed 32 days, once drawn in the net to train when hungry 4 days, according to this circulate operation with feed;
2)Large yellow croaker adult fish is listing advance behavior phase 40d Nature enemy, is once drawn every 10 days during Nature enemy
Net training.
Embodiment one
Experiment is divided into 2 groups, and every group 3 are parallel, and each parallel 30 tail, feeding facility is that 6 single volumes are basal diameter 1.5m,
Water body volume 0.5m3Circular glass steel wire bucket.Cultivated using perennial draingage, every barrel of streamflow is about 50L/h.Water body dissolved oxygen>
5.5mgO2/ L, pH 7.6-8.2.Natural lighting, water temperature(26-28)℃.Large yellow croaker is artificial propagation fingerling then, is derived from Zhejiang
River Zhoushan Deng Bu islands, 7 d are temporarily supported with mixed feed in experiment bucket.
Before on-test, grab sample after fish starvation 12h is weighed, original body mass is shown in Table 1, without significant difference.Experiment
It is uninterrupted during continuously feeding mixed feed, whole experiment if 1 control group.Experimental group is by changing experiment bucket water inlet side
Position, water body in experiment bucket is formed circulation, feed after strategy is hungry 8d and continuously feed 32d, entered during hungry when 4 days
Draw in the net to train in connection with fishing operations simulation cement pit of row, increase its motion activity.Continuous feed refers to daily 8:00 He
18:00, which is satiated with food, feeds mixed feed, that is, feeds in half an hour after experiment bucket and have a small amount of residual bait i.e. stopping and feed.Test duration 40
d。
From above-mentioned test examples can draw the body weight of different 2 groups of large yellow croaker juvenile fish for feeding strategy, rate of body weight gain and
Survival rate.Specific data see the table below 1.Data are shown in table, and during off-test, the whole opisthosoma weight and weight gain rate of experimental group are high
In control group, wherein rate of body weight gain is higher than control group 24.01%.Therefore, intermittent starvation is fed, and can effectively facilitate growth.
The difference of table 1 feeds tactful large yellow croaker juvenile fish body weight, rate of body weight gain and survival rate statistical result
Simultaneously to drawing in the net to train the influence to large yellow croaker juvenile fish to carry out experimental analysis.Experiment 15 days by a definite date, if control group and reality
Each 1 of group is tested, every group 3 parallel, and each parallel 30 tail, wherein control group fasting are handled, while experimental group fasting is handled, often
Operation was once arrested every 3 days, increases its amount of exercise.Carry out testing the measurement and comparative analysis of weight during off-test.
It can show that same fasting is handled 15 days from above-mentioned test examples, every 3 days arrest the experimental group of operation
The Body weight loss of large yellow croaker juvenile fish 15.38%, and the control group experiment fish Body weight loss for not carrying out arresting operation only has 8.81%,
Reduce speed and be far smaller than experimental group(Table 2).Therefore, carry out arresting operation during fasting and imitate cement pit and draw in the net to train, can
To effectively facilitate the decline of juvenile fish body weight.
Draw in the net to train the influence to weight under the starvation conditions of table 2
Embodiment two
The general seed then of cultured large yellow croaker, which is cultivated to Second Year bottom, to be started to list, and now large yellow croaker is about or so 20 monthly ages.Cause
This, selects or so 18 physical strong, disease-free and injury-free monthly ages tail of large yellow croaker 400, body weight average 391.61g at random in this experiment.
Stochastic averagina distribution is put in a suitable place to breed to be cultivated in the completely the same 3*3*3 net cages of 2 specifications, is temporarily supported 7 days, normal during this period to throw
Feeding material, experiment is proceeded by after fish to be tested is in stable condition.Experiment is divided into 2 groups, and one group is the control group normally cultivated, i.e.,
Feed artifical compound feed twice sooner or later daily, feeding volume is the 2-3% of fish body weight.Experimental group carries out complete Nature enemy, during which
Once drawn in the net to train within every 10 days, increase fish body mobility.Make an inspection tour daily, pull the experiment fish of death out in time and count,
Experiment 60 days by a definite date, sampling in every 20 days once, measurement experiment fish length, body weight, calculate coefficient of condition, in addition, taking muscle of back to enter
Row crude fat determines.
The different sexes muscles of Pseudosciaena crocea crude fat situation of change of table 3(Dry)(Mean value ± standard error)%
Note:nsRepresent that experimental group and control group difference is not notable;*Represent experimental group and control group significant difference(P<0.05)It is above-mentioned
Under the conditions of example can draw different starvation times, crude fat content and the situation of change of coefficient of condition in male and female muscles of Pseudosciaena crocea.
Table 3 is crude fat content analysis result in muscle.As a result show, it is different degrees of that Nature enemy makes the female milter of large yellow croaker occur
Fat content declines, wherein, in hungry 40d, male and female large yellow croaker crude fat content is substantially less than control group.
Large yellow croaker build measurement index represents that coefficient of condition is lower, and explanation large yellow croaker build is better with coefficient of condition, and table 4 is analysis
As a result.Data are shown in table, and starvation makes large yellow croaker coefficient of condition a certain degree of decline occur, in 40d, male and female rheum officinale fish guano
Full scale is significantly less than control group, and now the build of large yellow croaker has obtained preferable improvement.
The different sexes large yellow croaker coefficient of condition situation of change of table 4(Mean value ± standard error)%
Note:nsRepresent that experimental group and control group difference is not notable;*Represent experimental group and control group significant difference(P<0.05)
In addition, control group and each 1 of experimental group are set, each tail 350g of net cage 100 or so large yellow croakers.Control group fasting is handled, real
Test while group fasting is handled and once drawn in the net to train every 5 days, test 20 days by a definite date, sampling and measuring is tested at the end of experiment
Fish body weight and body length, calculate coefficient of condition and carry out comparative analysis, analysis result is listed in table 5.
Table 5 draws in the net to train the influence to large yellow croaker adult fish coefficient of condition
As can be seen from the table, it is all higher than not carrying out drawing in the net what is trained by the experimental group male and female coefficient of condition reduced rate for drawing in the net to train
Control group, therefore, during fasting starvation carrying out drawing in the net training is necessary.
Claims (3)
1. a kind of quick cultural method for obtaining high-quality large yellow croaker, it is characterised in that large yellow croaker cultivation stages are carried out to large yellow croaker
Discontinuity is fed and Nature enemy, is specially:
1)Continuously fed 32 days after large yellow croaker juvenile fish is hungry 8 days, once drawn in the net to train when hungry 4 days, and by this circulation behaviour
Make and feed;
2)Large yellow croaker adult fish is listing advance behavior phase 40d Nature enemy, is once drawn every 10 days during Nature enemy
Net training.
A kind of 2. quick cultural method for obtaining high-quality large yellow croaker as claimed in claim 1, it is characterised in that large yellow croaker children
The fish culture stage is divided into two stages of indoor cement pit and cage culture, is made in cement pit cultivation stages by adjusting water inlet angle
Water is in circulation state, possesses certain water velocity.
A kind of 3. quick cultural method for obtaining high-quality large yellow croaker as claimed in claim 2, it is characterised in that 3 monthly age juvenile fish
Indoor cement pit cultivation is carried out, cement pit water inlet connects pvc pipe, is continuously fed 32 days after what is used feed frequency as hungry 8 days,
Once drawn in the net to train when hungry 4 days, circulate operation and fed according to this, regulation pvc pipe angle, promotes in pond in breeding process
Water body forms circulation, possesses certain flow velocity;Juvenile fish is transferred in the net cage of coastal waters before surviving the winter and cultivated, it is same to carry out starvation after 8 days
Continuously feed 32 days, once drawn in the net to train when hungry 4 days, according to this circulate operation with feed.
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Cited By (2)
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CN109526827A (en) * | 2018-12-30 | 2019-03-29 | 盐城工学院 | A kind of method of freshwater aquiculture sea shrimp |
CN112262795A (en) * | 2020-11-06 | 2021-01-26 | 中国水产科学研究院黄海水产研究所 | Nutrition method for maintaining muscle fatty acid quality of low-fat type cultured fish |
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CN101292636A (en) * | 2008-02-14 | 2008-10-29 | 浙江海洋学院海洋与渔业研究所 | Method for cage culture of spotted maigre |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109526827A (en) * | 2018-12-30 | 2019-03-29 | 盐城工学院 | A kind of method of freshwater aquiculture sea shrimp |
CN112262795A (en) * | 2020-11-06 | 2021-01-26 | 中国水产科学研究院黄海水产研究所 | Nutrition method for maintaining muscle fatty acid quality of low-fat type cultured fish |
CN112262795B (en) * | 2020-11-06 | 2021-08-27 | 中国水产科学研究院黄海水产研究所 | Nutrition method for maintaining muscle fatty acid quality of low-fat type cultured fish |
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Application publication date: 20171212 |