A kind of Penaeus Vannmei point pool-mistake pool method
Technical field
The present invention relates to aquaculture industry field, and in particular to a kind of Penaeus Vannmei point pool-mistake pool method.
Background technology
Penaeus Vannmei is one of big shrimps of world today's cultured output highest three.Penaeus Vannmei originates in South America
Pacific rim marine site, Institute of Oceanology of the Chinese Academy of Sciences professor Zhang Weiquan takes the lead in introducing this shrimp by the U.S., and 1
Nursery pass is breached year, until promoting cultivation throughout the country from lab scale to pilot scale.At present my Guangdong, Guangxi, Fujian, Hainan,
Zhejiang, Shandong, Hebei etc. are saved or autonomous region progressively promotes cultivation, the Penaeus Vannmei of Tianjin Hangu District Yang Jiabo towns cultivation
It is world-famous, there is the laudatory title in " townshiies of Chinese fishes and shrimps ", wherein the technology for being subordinate to Penaeus Vannmei is the most ripe.
Penaeus Vannmei delicious meat, processing dressing percentage may be up to 67%, and suitable temperature range is wide, can be fitted in 18-32 DEG C of growth
Salt scope is also wide, can be grown under the conditions of salinity 1-40 ‰, is a kind of excellent desalination cultivation kind.Penaeus Vannmei grows
It hurry up, resistance against diseases is strong, has been increasingly becoming the main cultivation shrimp species of south China.The ground such as China Xiamen, the North Sea, Nanning and Guangzhou
There are shrimp seedling, shrimp nauplius or the close shrimp supply of material.
Point pool-mistake pool is exactly that the shrimp seedling on several pools is concentrated on into a pool temporarily to support a period of time, is then separately cultivated.So
The benefit of operation is reduction labor intensity, saves aerator electricity consumption, is conducive to optimization to give birth to for the conditional area that intakes in addition
Production is arranged.The pool is crossed when shrimp length is to 3-4 centimetres.Its universal mode of operation is that Jiang Zitang has entered water, then adjusts salinity and female pool one
Cause.Next reservation " draw in the net team " after sterilization, removing toxic substances, pool operation is crossed in morning one day.Spending a couple of days behind the pool does not feed feed.
Current culture of Penaeus vannamei undergoes more than 20 years, wherein be no lack of a point pool-mistakes pool operation, but it is most of with pool mistake
Lose and come to an end, cause rarely to cross pool operation in industry in recent years.The current point pool-mistake pool is generally operated is that water has been entered on the sub- pool, is adjusted
Salinity is consistent with female pool, carries out disinfection, detoxifies, and then draws in the net a point pool-mistake pool.The drawbacks of this operation is brought is as follows:(1)The sub- pool
It is only that salinity is identical with female pool, it is white that pH value, total alkalinity, hardness, dissolved oxygen, algae composition and the ratio on the sub- pool etc. are in South America
In prawn existence OK range.Keep being close between the extremely difficult control primary and secondary pool.The shrimp seedling to the sub- pool can thus be given
Generation greatly stress.(2)Concentrate on and cross the pool morning only because nice and cool, the metabolism of shrimp is relatively slow.Do not consider
Shrimp anti-stress ability problem.(3)" draw in the net team ", to draw in the net number of times charge, its is simple to operate roughly.To the mechanical damage of shrimp seedling compared with
Greatly.(4)Spending a couple of days behind the pool feeds feed shrimp seedling may be caused to be caught an illness to weak because that can not obtain enough nutrition behind the sub- pool.
(5)Under normal circumstances, the physiological development phase of " turning liver " is exactly completed when shrimp body length is in 3-4 centimetres.But due to water temperature, water quality,
Nutrition, weather etc. a variety of causes can produce " turning liver " delay, and its anti-stress ability difference was not suitable for pool operation in such cases.
The content of the invention
It is an object of the invention to overcome above-mentioned technical problem present in prior art, there is provided a kind of Penaeus Vannmei point
The pool-mistake pool method, the above method can significantly improve the survival rate on the shrimp seedling point pool-mistake pool.
The purpose of the present invention is achieved by the following technical programs:
A kind of Penaeus Vannmei point pool-mistake pool method, comprises the following steps:
The S1 pools are handled
Sub- pool water is proceeded into 100cm when the entrance of female pool shrimp seedling turns the liver phase;The salinity of regulator pool water and the salinity phase of female pool water
Together;Then every mu of water body is carried out disinfection with 5-7 kilograms of bleaching powder;The daily sodium thiosulfate removing toxic substances of sterilization time removes chlorine residue;The sub- pool
Aerator it is consistent with female pool switch all the time;Fixed water pump;
S2 changes water
The female pool-sub- pool exchanged water is carried out in four times:For the first time, the water of exchange is the 5% of female pool water volume;Second, exchange
Water is the 10% of female pool water volume;For the third time, the water of exchange is the 30% of female pool water volume;4th time, this exchanged water is opened
Two water pumps are until shrimp seedling is crossed to the sub- pool and has sloughed off shell stopping after beginning;Wherein, first three time is changed water operation and completed before shrimp shell,
4th completes for secondary 5 hours before shrimp shell;Such as occur abnormal conditions in each exchanged water, water is changed in pause, is recovered etc. shrimp seedling
Water is swapped again after normal;
S3 draws in the net a point pool-mistake pool
Shell twice is seen during 4th exchanged water all under normal circumstances, draws in the net a point pool-mistake in 5 hours before third time shell
The pool;Draw in the net to meet abnormal splash vitamin C and glucose resisting stress during a point pool-mistake pool;
S4 is fed
Divide the pool-mistake pool operation to complete, wait shrimp to enter after sub- pool shell and stop exchanged water and start to feed, first time feeding volume is shrimp
The 1% of seedling gross weight, is put in material an ancient term for silk fabrics, between the 1.5-2 hours material feeding time of control with the 2% of feeding volume always later.
A kind of Penaeus Vannmei point pool-mistakes pool method, after sub- pool processing, exchanged water in four times, fully ensured the sub- pool and
The uniformity of female pool ecological environment, reduce behind the shrimp seedling point pool-mistake pool stress phenomenon.The shrimp seedling point pool-mistake pool is complete before shrimp shell
Into, it is possible to reduce the mechanical damage being subject to during drawing in the net.Drawn in the net using new net, shrimp seedling bacteria infection can be reduced
Risk.When the above-mentioned point of pool-mistake pool method can greatly improve a point pool-mistake pool, the survival rate of shrimp seedling.
Preferably, water pump described in S1 is fixed on float, water pump is floated on 10 ~ 20 centimetres of positions under surface layer of water.
Preferably, in the step S2, the primary and secondary pool is started when the white coating on shrimp seedling liver top layer is to liver surface 60%
Between exchanged water.
Preferably, in the step S3, the vitamin C consumption is 100 grams of every mu of water bodys, and the sugared consumption of the glucose is
2500 grams of every mu of water bodys.
Preferably, in the step S3, a point pool-mistake pool is drawn in the net using new net progress.
The present invention has following technique effect compared with prior art:
The invention provides a kind of Penaeus Vannmei point pool-mistake pool method, comprise the following steps:The S1 pools are handled;S2 changes water:
The female pool-sub- pool exchanged water is carried out in four times:For the first time, the water of exchange is the 5% of female pool water volume;Second, the water of exchange
For the 10% of female pool water volume;For the third time, the water of exchange is the 30% of female pool water volume;4th time, after this time exchanged water starts
Two water pumps are until shrimp seedling is crossed to the sub- pool and has sloughed off shell stopping;Wherein, first three time is changed water operation and completed before shrimp shell, and the 4th
Complete within secondary 5 hours before shrimp shell;Such as occur abnormal conditions in each exchanged water, water is changed in pause, recovers normal etc. shrimp seedling
Swap water again afterwards;
S3 draws in the net a point pool-mistake pool;S4 is fed.After sub- pool processing, exchanged water, has fully ensured that the sub- pool and female pool are ecological in four times
The uniformity of environment, reduce behind the shrimp seedling point pool-mistake pool stress phenomenon.The shrimp seedling point pool-mistake pool is completed before shrimp shell, can be subtracted
Few mechanical damage being subject to during drawing in the net.Drawn in the net using new net, the risk of shrimp seedling bacteria infection can be reduced.It is above-mentioned
When point pool-mistake pool method can greatly improve a point pool-mistake pool, the survival rate of shrimp seedling.
Embodiment
Present disclosure is further illustrated with reference to specific embodiment, but be should not be construed as limiting the invention.
Without departing from the spirit and substance of the case in the present invention, the simple modifications or substitutions made to the inventive method, step or condition,
Belong to the scope of the present invention;Unless otherwise specified, technological means used in embodiment is well known to those skilled in the art
Conventional meanses.
3 ~ 4 centimetres of shrimp length is chosen, 1000 are tested, calculate the survival rate of shrimp seedling behind point pool-mistake pool.
Embodiment 1
A kind of Penaeus Vannmei point pool-mistake pool method, comprises the following steps:
The S1 pools are handled
In female pool shrimp seedling into when turning the liver phase(Liver reddens)Sub- pool water is proceeded into 100cm;The salinity of regulator pool water and female pool
It is identical;Then every mu of water body is carried out disinfection with 5 kilograms of bleaching powder;The daily sodium thiosulfate removing toxic substances of sterilization time removes chlorine residue;The sub- pool
Aerator it is consistent with female pool switch all the time;Immersible pump is fixed on float, it is suspended in 10-20 centimetres of model under surface layer of water
It is well placed in enclosing and changes water water pump;
S2 changes water
Observe the change of shrimp seedling liver.Its color switchs to produce white lecithin coating below the liver after brown gradually prolongs upwards
Stretch.Start exchanged water between the primary and secondary pool when the white coating on liver top layer is wrapped up to liver surface 60%.
The female pool-sub- pool exchanged water is carried out in four times:For the first time, the water of exchange is the 5% of female pool water volume;Second, hand over
The water changed is the 10% of female pool water volume;For the third time, the water of exchange is the 30% of female pool water volume;4th time, this time exchange
Two water pumps are until shrimp seedling is crossed to the sub- pool and has sloughed off shell stopping after water starts;Wherein, first three time change water operation will be before shrimp shell
Complete, the 4th completes for secondary 5 hours before shrimp shell;Such as occur abnormal conditions in each exchanged water, water is changed in pause, etc. shrimp seedling
Water is swapped again after recovering normally;
See shell twice all under normal circumstances during 4th exchanged water, drawn in the net in 5 hours before third time shell the pool-point
The pool.Such as abnormal vitamin C of splashing(100 grams of every mu of water bodys)And glucose(2500 grams of every mu of water bodys)Resisting stress.
S3 draws in the net a point pool-mistake pool
Cross the pool and draw in the net to forbid to employ " draw in the net team ", had using the net of oneself and avoid disease from infecting.Operation is soft to reduce shrimp as far as possible
Seedling mechanical damage.
S4 is fed
Divide the pool-mistake pool operation to complete, wait shrimp to enter after sub- pool shell and stop exchanged water and start to feed, first time feeding volume is shrimp
The 1% of seedling gross weight, is put in material an ancient term for silk fabrics, between the 1.5-2 hours material feeding time of control with the 2% of feeding volume always later.
The survival rate for being computed shrimp seedling behind a point pool-mistake pool is 98%.