CN107211934A - Tilapia mossambica cage culture - Google Patents
Tilapia mossambica cage culture Download PDFInfo
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- CN107211934A CN107211934A CN201710429215.9A CN201710429215A CN107211934A CN 107211934 A CN107211934 A CN 107211934A CN 201710429215 A CN201710429215 A CN 201710429215A CN 107211934 A CN107211934 A CN 107211934A
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- tilapia mossambica
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- net cage
- cage culture
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Fodder In General (AREA)
Abstract
The invention discloses a kind of Tilapia mossambica cage culture, including procedure below：(1), net cage：Area is used for 20~50m2Square buoyancy tank, mesh be 1.8~2.0cm；(2), fingerling is cultivated：Put into long more than 8cm year fry into net cage, interval feeds intake feeding 2~3 days；(3), feed：Feed no less than 5 times, feed 5~6 months daily.It is of the invention that committed step in Tilapia mossambica breeding process is regulated and controled so that whole cultivation turns into can scale operation, survival rate height, yield height.
Description
Technical field
The present invention relates to Tilapia mossambica cultural technique field, especially a kind of Tilapia mossambica cage culture.
Background technology
Tilapia mossambica belongs to tropical fish, and with wide adaptability, fertility is strong, feeding habits are miscellaneous, premunition is strong, efficiency of feed utilization
The advantages of height, fast growth and fresh meat, it has also become the extensive freshwater fish of cultivation.Especially Sarotherodon sp (the big profit of Australia
Sub- Tilapia mossambica ♂ × bolti ♀), because its male ratio is high, population growth is fast, and yield is high and is welcome by culturist.Rofe
Fish culture develops very fast, inland provice in the southern province such as Guangdong, Hainan, Fujian, Guangxi using its advantage in geography and natural conditions
Part utilizes underground heat, and residual heat resources also have cultivation, and Tilapia mossambica, because without perverse between flesh, being easy to processing, is also that China's freshwater aquiculture is main
Export varieties.But at present for cage culture, the method without science, it is difficult to form large-scale cultivation mode.
The content of the invention
The present invention in view of the shortcomings of the prior art, proposes a kind of Tilapia mossambica cage culture, operate it is ingenious, can scale support
Grow.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：A kind of Tilapia mossambica cage culture, including with
Lower process：
(1), net cage：Area is used for 20~50m2Square buoyancy tank, mesh be 1.8~2.0cm；
(2), fingerling is cultivated：Put into long more than 8cm year fry into net cage, interval feeds intake feeding 2~3 days；
(3), feed：Feed no less than 5 times, feed 5~6 months daily.
Further, (1) net cage is surrounded by polyethylene screen cloth, the water surface and accounts for 10cm step, and underwater accounts for 30cm.
Further, the net cage is from water-bed more than 2~3 meters.
Further, (1) net cage is carried out disinfection processing step with 2~3% salt.
Further, in addition to controlling disease：Ich, hemorrhage, scales upright and streptococcosis.
Further, the prevention and controls of the ich, are embathed with 15ppm-25ppm formalin, 1 time a day,
2-3 times is a course for the treatment of.
Further, the prevention and controls of the hemorrhage, with bleaching powder hanging bag or splash, and are used in conjunction 2-3 days, or with rheum officinale etc.
Pharmaceutical chemistry is made in Chinese medicine, is fed 3-5 days by 0.3% addition.
Further, the prevention and controls of the scales upright, add 3% sodium bicarbonate mixed solution to embathe 10 points of disease fish with 2% salt
Clock.
Further, the prevention and controls of the streptococcosis, reduction feeds or used antibiotic.
Compared with prior art, the present invention has advantages below：Committed step in Tilapia mossambica breeding process is adjusted
Control so that whole cultivation turns into can scale operation, survival rate height, yield height.
Embodiment
With reference to embodiment, the present invention will be described in detail, the description of this part be only it is exemplary and explanatory, no
Reply protection scope of the present invention has any restriction effect.
A kind of Tilapia mossambica cage culture, including procedure below：
First, the making and setting of net cage
Using cage culture Tilapia mossambica, efficiency of feed utilization is greatly improved, aquaculture cost is reduced, increases economic benefit, net cage knot
Structure, specification, setting and conventional fish culture in net pen are essentially identical, and cultivation scale is according to actual production level, economic strength, market sale
Situation determines that setting for net cage will carry out science addressing and rational deployment according to the Biological characteristics of Tilapia mossambica.
1st, the making of net cage
(1) net cage material net cage is general is made up of framework, etting, float, the major part of sinker four, and making the material of etting has poly-
Ethene, polypropylene, nylon and metal mesh sheet.Web pre fetching is made at present is mainly polyethylene.The material of float has bamboo, old oil
Bucket, old Plastic Drum, foam plastic float, and armored concrete pontoon.Frame material bamboo (and float) China fir, the material system such as steel pipe
Make.Sinker has lead button, a stone (brick), and concrete falls system etc..Net cage frame will make firmly, can resist stormy waves and be easy to daily
Management operation, sinker is positioned to consolidate, it is impossible to drifted about with stormy waves, positioning rope will be tensed and allowed some leeway, when being easy to fluctuation of water table
Lifting can be adjusted in time.
(2) net cage shape net cage various shapes, there is rectangle, square, polygon, circle etc., no matter which kind of shape used
Shape, requires to be easy to manage and increase the exchange capacity of water body in principle.It was verified that Dongjiang Lake net cage preferably uses square or rectangular
Shape is preferably.
(3) cage size should cultivate scale according to Cultivated water, and the factor such as frame material is determined.Casing is excessive, spirit
Mobility living is poor, is classified, prevents and cures diseases, and outlet operation inconvenience, the face ratio with water body contact ac is small, and water body exchanges poor, case
Internal dissolved oxygen is relative to be reduced.Casing is too small, and counter investment cost is high, and bait is easily lost in, and increases production cost.Practice card
Bright, Tilapia mossambica net cage area is appropriate with 20~50m2 scopes.
(4) cage culture of net cage mesh size Tilapia mossambica, it is necessary to assure business is reached within the culture-cycle of current year
Product specification, and outlet sale, although may realize on safe overwintering, scheduling of production in the winter time, accomplish not in high volume as far as possible
Case is deposited to survive the winter.Therefore, during breeding production, it is desirable to large size fingerling inlet.In production practices, Tilapia mossambica inlet minimum gauge
8cm should be not less than, corresponding net cage mesh should can use general 3cm meshes in 1.8-2.0cm, adult fish net cage.Simultaneously as sieve
Non- fish fast growth, should be by the production schedule, reasonably combined fingerling case and the ratio into fish box.
(5) assembling of the assembling etting of net cage it is general with wearing, around and 3 kinds of methods, look as far as one's eyes can see and use, bottom corner fragment of brick
Or the string bag loads big grain cobble and hung again, it is ensured that mesh obtains the strength degree of maximum in water, improves set using net cage to greatest extent
Count volume.Polyethylene screen cloth is enclosed in the 10cm on net cage surrounding saltwater, underwater 30cm scopes laying one, it is to avoid feed is lost in.
2nd, the setting Tilapia mossambica aquaculture net cage of net cage typically uses closed floating structure, and casing is suspended on framework,
Water quality is pure and fresh from more than water-bed 2-3 meters, keeping in case for bottom, and water body volume is constant in case, and is lifted and mobile with SEA LEVEL VARIATION,
2 active opens are stayed in casing Upper diagonal, passes in and out, use mixedly clearly as fingerling, usually close.
The setting of net cage is with 4,8,12,16,20,24 casings prick in a row, firm with frame material between row and row
Link, spacing is 5m or so, and north-south is controlled.The open waters setting net cage for keeping away north wind on the sunny side should be selected, expands each case as far as possible
The contact surface of body and extraneous waters, to increase dissolved oxygen amount.
2nd, fingerling inlet and management
1st, the production schedule, which formulates raiser, to formulate year production meter according to itself economic capability, product market, labour's situation
Draw, determine investment and cultivation scale, the suitable high-density breeding of Tilapia mossambica, by taking a bite 25m2 net cage as an example, single case yield can
Calculate, productive investment volume is about 16000 yuan, wherein 1000 yuan of net cage and framework, 1500 yuan of seed, raise by 2000-2500kg
13000 yuan of material, 500 yuan of personnel's wage, with reference to above-mentioned investment, determines manufacturing program of a year.
2nd, growth characteristic of the every preparation before fingerling inlet according to Tilapia mossambica is fully carried out, annual May, most
Development breeding production is proper when good Dongjiang Lake water temperature rises more than 25 DEG C, should fully carry out before fingerling inlet before this
Every preparation.
1. the net cage that the installation check of net cage is newly purchased conscientiously checks, it is no it is damaged, disconnect, broken string, and 10 days before fingerling inlet
Water is descended in advance, is allowed on etting and is covered with attachment.Old net cage will cleaning ahead of time, inspection, reinforcing, sterilization.
2. the preparation Tilapia mossambica cage culture of fingerling, depending on commercial specification requirement, it is necessary to prepare surviving the winter for big specification (more than 50g)
The spray that seedling or southern area and hot spring breeding farm are bred then reaches more than 8cm seedling then in May, is limited by above-mentioned condition
System, satisfactory seed not has everywhere, it is necessary to makes a reservation for ahead of time, otherwise, will cause to cultivate then to fail in one's scheme.While by
There is serious individual growth difference in Tilapia mossambica ♀, ♂ individual, ♂ individual growths speed is fast, and individual is big, during breeding production,
It is required that Tilapia mossambica seed ♂ rates will reach more than 98%, preferable culture efficiency could be realized, therefore, should select regular, greatly
Type, strong Seedling production enterprise of technical force orders.
3rd, the harvesting of fingerling, transport, inlet points for attention
1. stop eating in advance：It should stop eating 1-2 days before fingerling harvesting, and draw in the net to take exercise.
2. box：" box " is answered before fingerling transport 3-5 hours, is promoted it and is fully discharged excreta.
3. quick metering is counted and entrucking, makes fingerling as short as possible from the water time.
4. traffic density is rationally controlled：Traffic density should flexibly be grasped according to weather, water temperature, distance, it is ensured that in transportation not
Anoxic.5. water temperature condition is noted：Tilapia mossambica easily causes mechanical damage, 20 DEG C or so easy infections of water temperature in harvesting, transportation
Saprolegniasis causes mortality.Therefore, it should select to fish for and transport more suitable during more than 25 DEG C of fine day water temperature.It should be noted that simultaneously
Adjust live fish box water temperature and the water temperature of cage culture water body before the water temperature temperature difference, the dress preceding pond water temperature of fish and live fish box water temperature, lower fish
Must not exceed 2 DEG C, can be operated, the temperature difference answers leading temperature adjustment more than more than 2 DEG C, the temperature adjustment time also should 20 minutes with
On.
6. transported with movable net cage.Fingerling is reached after harbour, adjusts the temperature difference, you can lower fish, and lake surface transport is preferably from activity
Net cage, fish is directly arrived down in movable net cage, then slowly moves to culture zone, can so avoid Tilapia mossambica anoxic in transportation,
But it is noted that travelling speed can not be too fast, prevent hanging breaking net cage from escaping fish.
7. sterilized with salt.Conditional place, can be sterilized in live fish box with 2-3% salt, prevent the sense of mildew
Dye.
4th, food is tamed and dociled
Second day after fingerling inlet, you can feed particulate material and carry out taming and dociling food, when taming and dociling food, feeding intake should take what is be slowly spaced to feed
Method, promotes Tilapia mossambica to the water surface to rob food, can be tamed and dociled by 2-3 days, is then normally fed.Pay special attention to, fish
The mechanical damage that is caused kind fishing for, in transportation, it is necessary to the time of 7-10 days or so could recover, it is therefore not complete in wound
Before full recovery, it is impossible to branch mailbox, in order to avoid cause new wound.It should could be divided after after wound recovery according to weather water temperature condition
Case.5th, breed in grades is managed
Growth Op Tilapia speed is fast, in suitable growth temperature range (28-30 DEG C), the average reachable 8-10g of weightening daily, together
When Tilapia mossambica net cage take high-density breeding mode, such as feeding volume is not enough or feeding method not science, easily causes inequality of ingesting, individual
Body difference is big.Therefore classification work is carried out, it is ensured that the fish specification in same case is basic according to the growing state of Tilapia mossambica in time
Neat and consistent, could improve population yield, and adult fish specification is up to standard, and this is an important technology during Tilapia mossambica cage culture
Measure.3rd, net cage throws feeding tube reason
Tilapia mossambica cage culture, feed cost account for the 80% of whole aquaculture cost, therefore the quality of feeding quality, throw feeding method
Correctness, how to ensure Tilapia mossambica reached within the defined culture-cycle commercial specification and outlet sale be determine cultivate into
The key lost.
1st, requirement of the Tilapia mossambica to food quality
Tilapia feed requires crude protein content in 28-32%, and the reasonable mixture ratio of nutrition crushes thin, preferably from expanded
Material, could promote its digestion, absorb, utilize, improve the speed of growth, reduce production cost.Although Tilapia mossambica is resistance to roughage
Ominivore-fish, but should be not less than 30% puffing material from protein content in the seedling stage and feed, promote its fast-growth,
Long good skeleton.
2nd, the points for attention of process is fed
1. adhere to " four determine ", i.e., regularly, determine matter, quantitative, positioning.
2. the principle having many meals but little food at eath is adhered to：Tilapia mossambica enteron aisle is tiny, can eat, it is gluttonous, draw when eating, growth is fast, therefore diligent to throw,
The general number of times that feeds daily should be no less than 5 times.
3. throw feeding rate and should be higher than that other cultured fishes.Tilapia mossambica is that 5-10 month the suitable growth periods are in the culture-cycle of Dongjiang Lake
In 7-9 months, preferable outlet specification is reached within the so short time, it is necessary to by feeding volume is increased, improve feeding rate.One
As fish feeding rate in 3-5%, the feeding rate of Tilapia mossambica can bring up to 6-8% in the growth busy season, by conscientious in growth practice
Ingesting for fish of observation is flexibly grasped with growing state.
4. feeding before surviving the winter is strengthened.The large-scale farming of Tilapia mossambica, mainly for the export processing of Dong Jiang fish group company,
It should be annual September-December according to the processing arrangement of company, because processing capacity is big, partly depositing the case fish outlet time can be deferred to
December, and Tilapia mossambica cage culture is after November, with the arriving of cold wave, water temperature drop, ingestion ability substantially weakens, raw
Long speed slows down, and starts the fatty winterization of heavy collection in vivo, therefore, in this stage, should strengthen feeding, particularly to catch fine
My god, temperature is high, and the opportunity that surface temperature rises is fed, it is ensured that do not move back fat before adult fish outlet.
5. feed inferior and forbidden drug are prohibitted the use of.Tilapia mossambica is mainly used in export processing, strict to product quality requirement,
During whole breeding production, the feed inferior for not conforming to symbol export standard is prohibitted the use of, during fish disease prevention and cure, is prohibitted the use of
Forbidden drugses.Meanwhile, the standard compliant water environment of water quality should be selected, it is ensured that product quality meets export standard requirement.
3rd, adult fish outlet plays the problem of water transport should be noted that Tilapia mossambica by the cultivation of 5-6 months, reaches after commercial specification, i.e.,
Can outlet sale, but after October, as cold wave arrives, the water temperature of temperature and Dongjiang Lake will appear from the larger temperature difference, therefore
It should be noted that following item in outlet transportation.
1. cold wave arrives, and sudden drop in temperature should stop outlet.Now such as by fish from higher water temperature outlet, Tilapia mossambica can freeze
Wound, or even can largely be freezed to death during outlet and entrucking, therefore fine day should be selected, carried out when temperature is high.
2. winter transports, and should use the water or spring of Dongjiang Lake, reduces the larger influence come to fish tape of the temperature difference.If necessary,
Insulation should be also taken, prevents that fish water temperature in transportation is too low, causes death.After arriving at, it should get off as early as possible
It is processed, should not stops for a long time.
4th, the overwinter management of Tilapia mossambica
Dongjiang Lake cage culture Tilapia mossambica, although have the example successfully survived the winter, but we do not advocate large-scale living through winter for tilapia,
Otherwise, survive the winter once failing, heavy economic losses will be caused.But, in breeding process, if any minority it is below standard the need for
Survived the winter in net cage, then the problem of should be noted that the following aspects.
1st, note fine day hot weather is grabbed, strengthens feeding, nutrition is accumulated, freezing tolerance is improved.As long as Tilapia mossambica eats food, then not
Pipe is when, no matter can eat how many, will bait throwing in time.
In the deep water storehouse gulf that the 2nd, net cage is preferably moved to hidding and sunny side.
3rd, net cage depth can be increased, the net cage of 3 meters of depths of normal cultivation growth, net cage of surviving the winter can be using 5-6 meters of deep nets
Case.
4th, it is capped snow protection net.Snow protection net can be capped on the square for net cage of surviving the winter, it is to avoid fall snow and be directly entered caged-culture waters.
The 5th, straw can be lashed to sinking in net cage bottom.
5th, disease control
It has been recognized that, the resistivity of Tilapia mossambica is strong, and few diseases occur, and this conception of species is incorrect, with foster
Density increase is grown, breeding environment deteriorates, the disease of Tilapia mossambica is bound to occur, and will be increasingly severe.At present, there are several diseases
Had occurred and that in breeding process, and the incidence of disease is high, harm is serious, often results in very big loss.
1st, ich.Pathogen is the young or the cost of small melonworm.Morbidity fish body body surface has white point, intraoral also to have white point, disease
Fish does not eat food, can pandemic and outburst.It can be treated using the conventional method for the treatment of ich, it is also possible to 15ppm-
25ppm formalin embathes, 1 time a day, and 2-3 times is a course for the treatment of.
2nd, hemorrhage
The bacterial diseases of fishes caused by fish body is injured, sick fish shows as peeling off, and solely trip body surface many places are congested, and mucus increases, tail
Fin defect.Prevention and controls：With bleaching powder hanging bag or splash, be used in conjunction 2-3 days, or pharmaceutical chemistry is made with Chinese medicines such as rheum officinales, add by 0.3%
Dosage is fed 3-5 days.
3rd, scales upright
Caused by bacterium, sick flap is erect, and have rotten fin phenomenon, fin ray base portion is congested, and belly expands.Prevention and controls：Draw in the net,
When transport, branch mailbox etc. are operated, it is to avoid fish body is injured, during morbidity, adds 3% sodium bicarbonate mixed solution to embathe 10 points of disease fish with 2% salt
Clock.
4th, streptococcosis
1. cause of disease.Streptococcusagalactiae is the main pathogen of cultivating tilapia, can cause the mortality of Tilapia mossambica.
2. Clinical symptoms
Irregularities：Because streptococcus can encroach on the central nervous system of disease fish, therefore clinical manifestation is that sick fish swimming is abnormal,
It is murky, often non-directional slow travelling in the water surface, body flexing sometimes.
Ophthalmic injuries：Sick fish is often presented eye symptom such as eye sclera gonorrhoea, exophthalmos and bleeding etc., but not all
All there is eye symptom in sick fish.
Caseous abscess necrosis region：Sometimes occur 2-3 millimeters of caseous necrosis stove lesion on the both sides pregena of sick fish,
Subsequent necrosis region is ruptured to form ulcer, and the necrosis region of bigger (10-20 millimeters) is likely to occur in tail fin base portion.It is milk in necrosis region
The purulence matter of junket sample, such as rehabilitation of fruit disease fish, this focus can also retain for a long time.
Dermatorrhagia：Streptococcus often causes Tilapia mossambica body surface bleeding, shows around mouth, the petechial hemorrhage of fin ray base portion,
Sometimes blood spot is showed around anus or gonopore.
Ascites：The acute streptococcosis of Tilapia mossambica it is common it is intraperitoneal have a large amount of ascites, because ascites increases, cause anus to be dashed forward
Go out.
3. lesion is dissected
Gastrointestinal disease, the obvious enlargement of gall-bladder, the big several times of some ratio normal volumes., in acute infection, there are internal organ in septicemia
Extensive bleeding and liver,spleen,kidney, the heart, brain, the large-area hemorrhage of eye and enteron aisle, spleen and kidney enlargement.Peritonitis, is seriously feeling
During dye, sick fish, which is showed in serious peritonitis symptom, all internal organs and surrounding tissue adhesion, abdominal cavity, has a large amount of fibroids to ooze
Go out.
4. diagnostic method
Field diagnostic：According to clinical symptoms described above, careful site inspection is carried out to the sick fish of 5-10 bars, by internal organs
Smear is carried out, Gram's staining is then carried out, checks that gram-positive cocci can make a definite diagnosis the disease under the microscope.
Laboratory diagnosis：Streptococcus species can be determined by carrying out the separation of pathogen and bacteriological surveillance in laboratory.
5. prevent and treat
Reduction is fed：When streptococcosis breaks out, feeding for bait is reduced, the death rate of disease fish can be reduced.Reason is to reduce
The food-intake of fish body can reduce the infection chance of healthy fish.
Reduce stocking density：When disease occurs, and just occurs dead, it should reduce stocking density reduction stress factor and disease is passed
Chance is broadcast, helps to reduce the death of the shoal of fish, reduce loss.
Antibiotic smelting is treated：Application could effectively, because infected fish is hardly only early stage lotus coccus breaks out for antibiotic
Meeting material feeding, does not reach therapeutic effect, only those are not infected, moreover it is possible to the fish normally eaten food, can just play prevention effect.
Immune protection：Efficient commercially available vaccine there is no to prevent the outburst of Tilapia mossambica streptococcosis at present, still, soon
In the future, vaccine control is by as the Main Means for preventing Tilapia mossambica streptococcosis.
Described above is only the preferred embodiment of the present invention, it is noted that come for those skilled in the art
Say, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (9)
1. a kind of Tilapia mossambica cage culture, including procedure below：
(1), net cage：Area is used for 20~50m2Square buoyancy tank, mesh be 1.8~2.0cm；
(2), fingerling is cultivated：Put into long more than 8cm year fry into net cage, interval feeds intake feeding 2~3 days；
(3), feed：Feed no less than 5 times, feed 5~6 months daily.
2. Tilapia mossambica cage culture as claimed in claim 1, it is characterised in that：(1) net cage is surrounded by polyethylene screen cloth to step,
10cm is accounted on the water surface, underwater accounts for 30cm.
3. Tilapia mossambica cage culture as claimed in claim 1 or 2, it is characterised in that：The net cage is from water-bed more than 2~3 meters.
4. Tilapia mossambica cage culture as claimed in claim 1, it is characterised in that：(1) net cage is disappeared step with 2~3% salt
Poison processing.
5. Tilapia mossambica cage culture as claimed in claim 1, it is characterised in that：Also include controlling disease：Ich, bleeding
Disease, scales upright and streptococcosis.
6. Tilapia mossambica cage culture as claimed in claim 5, it is characterised in that：The prevention and controls of the ich, are used
15ppm-25ppm formalin embathes, 1 time a day, and 2-3 times is a course for the treatment of.
7. Tilapia mossambica cage culture as claimed in claim 5, it is characterised in that：The prevention and controls of the hemorrhage, use bleaching powder
Hanging bag is splashed, and is used in conjunction 2-3 days, or pharmaceutical chemistry is made with Chinese medicines such as rheum officinales, is fed 3-5 days by 0.3% addition.
8. Tilapia mossambica cage culture as claimed in claim 5, it is characterised in that：The prevention and controls of the scales upright, use 2% salt
Plus 3% sodium bicarbonate mixed solution embathe disease fish 10 minutes.
9. Tilapia mossambica cage culture as claimed in claim 5, it is characterised in that：The prevention and controls of the streptococcosis, reduce and throw
Feed or use antibiotic.
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| CN110352879A (en) * | 2019-08-07 | 2019-10-22 | 广西壮族自治区水产科学研究院 | A kind of method for breeding tilapia of prevention and control Tilapia mossambica streptococcosis |
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