CN104839069B - A kind of method for obtaining batch Duo Lin Xi parent populations - Google Patents
A kind of method for obtaining batch Duo Lin Xi parent populations Download PDFInfo
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- CN104839069B CN104839069B CN201510309359.1A CN201510309359A CN104839069B CN 104839069 B CN104839069 B CN 104839069B CN 201510309359 A CN201510309359 A CN 201510309359A CN 104839069 B CN104839069 B CN 104839069B
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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
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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
The present invention relates to a kind of method that batch obtains Duo Lin Xi parent populations, belong to the artificial breeding technology field of fish.In the prior art, the wild Duo Lin Xi adult fishes of seizure raise and train survival rate less than 0.1%, it is impossible to obtain batch parent population, constrain the large-scale production of the Duo Lin artificial seedlings of Xi.The present invention by the raising to the Duo Lin artificial seedlings of Xi, and cultivation turn into adult fish during by breeding environment, bait throwing in, intensity of illumination, sound, seizure, fall pond（The pool）The artificial regulatory of a series of measures, strengthens its training to breeding environment and cultivation operational suitability, reduces its stress reaction, and it is parent population that selected adult fish is raised and train in cultured population, raises and train survival rate more than 80%.The present invention can solve the problems, such as the Duo Lin full artificial breedings of Xi scales needed for batch parent population, be that the extensive seedling fostering of Duo Lin Xi lays the foundation.
Description
Technical field
The present invention relates to a kind of method that batch obtains Duo Lin Xi parent populations, belong to the artificial breeding technology field of fish.
Background technology
Duo Lin Xi Sillago sihama Forsk á l be under the jurisdiction of Perciformes Perciformes, Anabantoidei Percoidei,
Perch Superfamily Percoidea, Xi section Sillaginidae, Xi category Sillago.In Australia, India, Indonesia, Fei Lv
Guest and Japan are all distributed, and the coastal waters at China's Bohai and Yellow Seas, the East Sea and the South Sea is also all distributed, and body is long up to 300mm.Many squamas
Xi is commonly called as sand borer, ship fourth fish, the wheat head, and the fishing season fished for spring, season in summer two, as best fishing period, are the important economic fish of China coast,
Once considerable position is occupied in China coastal seas fishing operation, but due to overfishing in recent years, individuality becomes younger,
Colony becomes smallization, and yield is reduced year by year.
Duo Lin Xi finished product fish specifications are small, and aquaculture management is relatively easy to, and cultivation survival rate is high and breeding way is various, economy effect
It is beneficial preferable, with very wide industrialization breeding prospect.Realize that Duo Lin Xi industrialization is cultivated, before scale seeling industry is
Carry.But Duo Lin Xi belong to small fishes, build belongs to spindle, and frightened reaction is fierce and easily injured, bruise resistance extreme difference,
The wild Duo Lin Xi adult fishes for fishing raise and train 3 days survival rates less than 40%, raise and train 7 days survival rates less than 1%, raise and train 11 days survival rates low
In 0.1%, so in the market is based on the dead fish sale of chilled fish or dead a few hours, it is impossible to sold in fresh aquatic food mode.It is wild many
Lin Xi raise and train that survival rate is low to annoying fish reproduction expert always, how to obtain batch live fish, and then raise and train as parent population turns into
The bottleneck of Duo Lin Xi artificial breedings.Patent CN102919186B discloses a kind of artificial breeding method of Duo Lin Xi, and the method is
The wild Duo Lin Xi adult fishes of more than 100g are selected through taming as parent population, and prenatal nutrition reinforcing and parent population environment tune are carried out to it
Control, promotes its natural spawning, obtains embryonated egg.The patent mainly discloses the reinforced cultivating technology of wild Duo Lin Xi parent populations, but should
Method cannot obtain batch parent population.So far, there is not been reported for the research on batch acquisition Duo Lin Xi parent populations.
The content of the invention
It is an object of the invention to provide a kind of method that batch obtains Duo Lin Xi parent populations, specifically in Duo Lin Xi hatchery juveniles
Cultivation and adult fish pass through bait throwing in, intensity of illumination, sound, seizure, pond during raising and train（The pool）The artificial regulatory of a series of measures,
Strengthen its training to breeding environment and cultivation operational suitability, reduce its stress reaction, and the selected adult fish in cultured population
It is parent population to raise and train, and raises and train survival rate more than 80%, and the batch needed for the method can solve the Duo Lin full artificial breedings of Xi scales is close
Fish problem, is that the extensive seedling fostering of Duo Lin Xi lays the foundation.
In order to solve the above problems, the technical solution adopted by the present invention is as follows：A kind of batch obtains the side of Duo Lin Xi parent populations
Method, using following specific steps：
（1）Duo Lin Xi are propagated artificially：The Duo Lin Xi seedlings of 2 ~ 3cm of selection total length are thrown to be cultivated in culturing pool；
（2）Feeding and management：The mode that feeds fed using right place feeds Duo Lin Xi special compound feeds, and feed day is thrown
It is the 5 ~ 8% of Duo Lin Xi body weight to feed amount, is fed at twice daily, and suitably increased and decreased according to weather, water quality and situation of ingesting；Daily
Blowdown 1 ~ 4 time, and increase new water, high temperature or low temperature season suitably increase water filling number of times, keep 1.5 ~ 1.8m of culturing pool water level；Raise
When supporting, carry out bait throwing in acclimatization training, sound acclimatization training, intensity of illumination acclimatization training and catch acclimatization training；
（3）Harvesting：The harvesting after the cultivation of more than 10 months；
（4）Raise and train：Duo Lin Xi after harvesting, the individuality for selecting more than 40g is put into culturing pool, is carried out intensive complete artificial
Cultivation, feeds Duo Lin Xi special compound feeds；By the way of right place feeds, feed day feeding volume is Duo Lin Xi body weight
5% ~ 8%, feed at twice daily；When raising and train, bait throwing in acclimatization training, sound acclimatization training, intensity of illumination adaptability are carried out
Training and seizure acclimatization training；During raising and train, every 10 days, pond once, draining to depth of water 20-30cm, operating personnel
Walked about into pond；
（5）Parent population is screened：Through more than 10 months cultivate, many squama Xi adult fishes are obtained in batches, now, selection build rule, no
It is injured, without deformity, constitution is strong, color and luster is normal, activity is sensitive, it is normal, disease-free to ingest, without parasite, more than body weight 40g
Duo Lin Xi adult fishes are transferred to parent fish pond cultivation as parent population；In the parent population, it is more than the adult fish of 40g ~ 60g/ tails and 60g/ tails into
Fish ratio is 1:1, the female-male proportion in parent population is 1:1；
（6）Parent fish rearing：Duo Lin Xi special compound feeds are fed, spawning the last week feeds biological feed, and daily ration of feeding is
The 5% ~ 8% of fish body weight, the bait throwing in time is in the morning 8: 00 and afternoon 17:00；28 ~ 31 DEG C of water temperature of control, salinity 26 ~ 31, pH value 8.2
~ 8.5, DO 5.0 ~ 7.0mg/L of value, day quantity of exchanged water 100% ~ 200%, dim light, inflation；
Wherein, the right place feeds and refers to：When culturing pool is pond, it is fixed on bait table and feeds, culturing pool is water
Mud sump then feeds in fixed bait throwing in point；Feeding time is arranged on daily fixed time period；The sound acclimatization training refers to throw
Before feeding, tap cement pool wall in bait throwing in point or bait table is fed again；The intensity of illumination acclimatization training refers to exist at night
Turned on light near pond or cement pit or direct irradiation water surface for aquaculture；The seizure acclimatization training refers to when feeding, to stretch out one's hand or incite somebody to action
Fish during net drags for and reach the shoal of fish that ingests.
The biological feed refers to chilled squid, oyster, clam worm；Biological feed starts to feed in spawning the last week, uses
The mode that chilled squid meat, oyster meat, clam worm alternately feed, biological feed day feeding volume is the 5% ~ 8% of fish body weight.
The culturing pool of institute of the invention can be pond or outdoor tank-culture or interior cement pit；The pond can be high-order
Pond or Tu Tang or the mulch film pool；Pond sets bait table, and cement pit sets fixed bait throwing in point.The method of the present invention goes for list
The aquaculture model supported or raise together with.Require to be completed in pond, outdoor tank-culture or indoor cement pit during adult fish culture, with to adult fish
Breeding environment adaptability be trained.Through practice, the good order of adaptability effect is indoor cement, outdoor tank-culture, pond；
And monoculture is better than raising together with effect；Cultivation density high is better than low-density effect.
When being fished, fish instrument and dragged for using nylon trawlnet or nylon wire or bucket；The method of fishing is：Water is drained into
Depth of water 20-30cm, keeps oxygenation, it is ensured that water dissolves oxygen is when the density of fish is big in more than 5mg/L, culturing pool, using nylon wire
Seizure is dragged for, often net is dragged for catch every time and do not surpass 5 tails, it is to avoid spring extruding causes mechanical damage, and moves in time in bucket and keep
Oxygenation, then moves to running water transport vehicle（Ship）；Density hour, a zonule is concentrated on using nylon trawlnet by fish, then by above-mentioned
Method is fished.
When carrying out the cultivation of parent population, intensive culture need to be carried out using conventional change water, diseases prevention and regulating and controlling water quality mode.Support
Grow pond also to can select 30.7m × 8m × 1.5m, its broadside is semicircle（￠ 8m）Outdoor bar shaped cement track pond.
Adult fish of the invention or parent population such as need transport, and means of transportation is：In running water transport vehicle during transport（Ship）Running water storehouse
One layer of nylon wire is inside hung, fish is in net；Oxygenation is kept in transportation, dissolved oxygen does not surpass in more than 5mg/L, traffic density
40kg/m3。
When bait throwing in of the invention training is to feed many squama Xi in bait throwing in point cluster to achieve the goal.When voice training is to tap
Duo Lin Xi clusters near beating point are to achieve the goal；The not bait casting time, often nearby speak aloud, manufacture loud noise, train
, to loud noise and the adaptability of speech, Duo Lin Xi are not frightened and jump to achieve the goal during with loud noise or speech for it.Intensity of illumination
Duo Lin Xi are not frightened and jump to achieve the goal when training is with strong illumination water surface for aquaculture.Catch training and stir in water with being stretched out one's hand
The dynamic shoal of fish does not become separated in flight to achieve the goal.The training of falling pond with draining to depth of water 20-30cm, operating personnel into walk about in pond when it is many
Lin Xi are not frightened and jump to achieve the goal.
The present invention during Duo Lin Xi adult fish cultures using suitable breeding facility, by aquaculture model, feed, illumination
Intensity, sound, seizure, pond（The pool）The artificial regulatory of a series of measures, strengthens it to breeding environment and cultivation operational suitability
Training, reduce its stress reaction, and adult fish screened in cultured population and raised and train, by tame and screening and obtain batch
Parent population, solves the problems, such as that Duo Lin Xi large-scale artificials breed required parent population, is the extensive seedling fostering of Duo Lin Xi, manually supports
Grow and lay a good foundation, the industrialized development that Duo Lin Xi can be promoted to cultivate.
Specific embodiment
The present invention is described in further details below by example, these examples are only used for illustrating the present invention, do not limit
The scope of the present invention processed.
Embodiment 1：Duo Lin Xi F1Batch parent population is obtained for pond culture colony.
First, method
1st, Duo Lin Xi are propagated artificially：Cultivated as parent population using the wild Duo Lin Xi through taming, obtained embryonated egg, and
Cultivate the batch Duo Lin artificial seedlings of Xi；The area for choosing Guangdong Ocean University East Sea Island marine organisms study base is 0.09
hm2Feed coefficient, sterilized, water filling, Fei Tang in water body during foundation bait raised growth, select 2 ~ 3cm of height in above-mentioned seedling
Duo Lin Xi seedlings according to 300,000 tails of density/hm2It is thrown in feed coefficient.
2nd, feeding and management：Many squama Xi special compound feeds are fed, day feeding volume is 8% calculating of many squama Xi body weight, per bu
Feed twice, and suitably increased and decreased according to weather, water quality and situation of ingesting.Right place feeds, and before feeding, pond is tapped in bait throwing in point
Wall, treats most fish to be gathered near bait throwing in point and is fed again；When feeding, will often fish net and drag for and reach the shoal of fish that ingests
In.Night often observes the active situation of fish with the stronger flashlight direct irradiation water surface for aquaculture of light；Daily blowdown 4 times, and
Increase new water, high temperature or low temperature season suitably increase water filling number of times, and improve water level to 1.6m.
3rd, harvesting：Harvesting, nylon wire during harvesting after being cultivated through 10 months, it is to avoid fish body is injured.
4th, raise and train：Duo Lin Xi after harvesting, the individuality for selecting more than 40g is put into 50m3Rectangle cement pit in, carry out
It is intensive to propagate artificially entirely, feed Duo Lin Xi special compound feeds；Right place feeds, and before feeding, pool wall is tapped in bait throwing in point,
Treat most fish to be gathered near bait throwing in point to be fed again；When feeding, will often fish during net drags for and reach the shoal of fish that ingests.Night
Between often with the stronger flashlight direct irradiation water surface for aquaculture of light, observe the active situation of fish.During raising and train, every 10
My god, it once, is trained to the adaptability that fishes in pond, and with draining to depth of water 20-30cm, operating personnel are into walking about in pond.
5th, parent population screening：Selection selection build it is regular, not injured, without deformity, constitution is strong, color and luster is normal, activity is sensitive,
The Duo Lin Xi adult fishes normal, disease-free, without parasite, more than 40g that ingest carry out parent fish rearing, in parent population, body weight as parent population
Adult fish the ratio more than adult fish of 40g ~ 60g/ tails and body weight 60g/ tails is 1:1, and the female-male proportion of adult fish is 1:1.
6th, parent fish rearing：Duo Lin Xi special compound feeds are fed, spawning the last week alternately feeds chilled squid meat, oyster
Meat, clam worm, promote female, male parent population further ripe, and daily ration of feeding is the 8% of fish body weight, and the bait throwing in time is in the morning 8: 00 and afternoon
17:00；28 ~ 31 DEG C of water temperature of control, salinity 26 ~ 31, pH value 8.2 ~ 8.5, DO 5.0 ~ 7.0mg/L of value, day quantity of exchanged water 100% ~
200%, dim light, inflation.
2nd, result：This cultivates the tail of Duo Lin Xi parent populations 4873, is cultivated through 3 first quarter moons, reaches egg-laying season first, highest day
Egg laying amount reaches 3.2kg, adds up to more than 1,000 ten thousand, and incubation rate more than 86% obtains Duo Lin Xi F1For parent population.
Embodiment 2：Duo Lin Xi F2Batch parent population is obtained for pond polyculture colony.
First, method
1st, Duo Lin Xi are propagated artificially：In the F of embodiment 11Selected standby parent population in cultured population, cultivates through accelerating, obtains
Batch embryonated egg, the artificial seedling of batch is gone out through artificial culture（Body 2 ~ 3cm long）；Selection Leizhou City Hui great aquacultures Co., Ltd
East Sea Island area of base is 0.18 hm23 mouthfuls of feed coefficient carry out Fish-shrimp mix-culture, cultivation density is 4,500,000 tails of prawn/hm2, it is many
Lin Xi density is respectively 3.0 ten thousand tails/hm2, 6.0 ten thousand tails/hm2With 9.0 ten thousand tails/hm2。
2nd, feeding and management：Main to feed prawn mixed feed, day feeding volume is calculated by the 8% of prawn body weight, per bu four
It is secondary to feed, and suitably increased and decreased according to weather, water quality and situation of ingesting, breeding process does not feed Duo Lin Xi specialty feeds, Duo Lin Xi
Zooplankter in main breeding water body of ingesting, when biological feed is not enough, prawn feed of ingesting；Daily blowdown 2 times, and increase new
Water, high temperature or low temperature season suitably increase water filling number of times, and improve water level to 1.8m.
3rd, harvesting：Harvesting, nylon wire during harvesting after being cultivated through 10 first quarter moons, it is to avoid fish body is injured.
4th, raise and train：Duo Lin Xi after harvesting, the individuality for selecting more than 50g is put into Guangdong Ocean University East Sea Island marine organisms
Study base specification is 30.7m × 8m × 1.5m, and its broadside is semicircle（￠ 8m）Outdoor bar shaped raceway pond in, carry out intensive
Change is propagated artificially entirely, feeds Duo Lin Xi special compound feeds；Feedstuff feeding by the way of right place feeds, before feeding,
Bait throwing in point taps pool wall, treats most fish to be gathered near bait throwing in point and is fed again；When feeding, will often fish net and drag for and stretch
To in the shoal of fish that ingests.Night often observes the active situation of fish with the stronger flashlight direct irradiation water surface for aquaculture of light；Raise and train
During, every 10 days, pond once, trained it to the adaptability that fishes, and with draining to depth of water 20-30cm, operating personnel enter
To enter walk about in pond.
5th, parent population screening：Selection selection build it is regular, not injured, without deformity, constitution is strong, color and luster is normal, activity is sensitive,
The Duo Lin Xi adult fishes normal, disease-free, without parasite, more than 40g that ingest carry out parent fish rearing, in parent population, body weight as parent population
Adult fish the ratio more than adult fish of 40g ~ 60g/ tails and body weight 60g/ tails is 1:1, and the female-male proportion of adult fish is 1:1.
6th, parent fish rearing：To feed based on Duo Lin Xi special compound feeds, spawning the last week alternately feed chilled squid meat,
Oyster meat, clam worm, promote female, male parent population further ripe, and daily ration of feeding is the 5% ~ 8% of fish body weight, and the bait throwing in time is in the morning 8:
00 and afternoon 17:00；Control 28 ~ 31 DEG C of water temperature, salinity 26 ~ 31, pH value 8.2 ~ 8.5, DO 5.0 ~ 7.0mg/L of value, day quantity of exchanged water
100% ~ 200%, dim light, inflation.
2nd, result：This cultivates the tail of Duo Lin Xi parent populations 13265.Cultivated through 4 months, reach egg-laying season first, highest daily output
Ovum amount reaches 6.5kg, adds up to more than 2,100 ten thousand, and incubation rate more than 83% obtains Duo Lin Xi F first2It is complete that in generation, raises together with cultured population parent population
The success of artificial culture.
Embodiment 3：Duo Lin Xi F2Cement pit cultured population obtains batch parent population.
First, method
1st, Duo Lin Xi are propagated artificially：In the F of embodiment 11Selected standby parent population in cultured population, cultivates to obtain through accelerating and criticizes
Amount embryonated egg, through the artificial breeding artificial seedling of granted amount；Select the face of Guangdong Ocean University East Sea Island marine organisms study base
Product is 50m33 mouthfuls of outdoor tank interior, the outdoor for carrying out artificial seedling is indoor pool cultivated, and cultivation density is 40 tails/m2。
2nd, feeding and management：Many squama Xi special compound feeds are fed, day feeding volume is calculated by the 6% of many squama Xi body weight, per bu
Feed twice, and suitably increased and decreased according to weather, water quality and situation of ingesting；Right place feeds, and before feeding, pond is tapped in bait throwing in point
Wall, treats most fish to be gathered near bait throwing in point and is fed again；When feeding, will often fish net and drag for and reach the shoal of fish that ingests
In.Night often observes the active situation of fish with the stronger flashlight direct irradiation water surface for aquaculture of light；Daily blowdown 4 times, and
Increase new water, high temperature or low temperature season suitably increase water filling number of times.
3rd, harvesting：Harvesting, nylon wire during harvesting after being cultivated through 11 months, it is to avoid fish body is injured.
4th, raise and train：Duo Lin Xi after harvesting, the individuality for selecting more than 50g is put into Guangdong Ocean University East Sea Island marine organisms
Study base 50m3Rectangle cement pit in, carry out it is intensive propagate artificially entirely, feed Duo Lin Xi special compound feeds；Feed
Feed by the way of right place feeds, before feeding, pool wall is tapped in bait throwing in point, treat that most fish is gathered in bait throwing in point attached
Closely fed again；When feeding, will often fish during net drags for and reach the shoal of fish that ingests；Night is often straight with the stronger flashlight of light
Irradiation water surface for aquaculture is connect, the active situation of fish is observed；During raising and train, every 10 days, pond once, trained it suitable to what is fished
Ying Xing, with draining to depth of water 20-30cm, operating personnel are into walking about in pond.
5th, parent population screening：Selection selection build it is regular, not injured, without deformity, constitution is strong, color and luster is normal, activity is sensitive,
The Duo Lin Xi adult fishes normal, disease-free, without parasite, more than 40g that ingest carry out parent fish rearing, in parent population, body weight as parent population
Adult fish the ratio more than adult fish of 40g ~ 60g/ tails and body weight 60g/ tails is 1:1, and the female-male proportion of adult fish is 1:1.
6th, parent fish rearing：To feed based on Duo Lin Xi special compound feeds, spawning the last week alternately feed chilled squid meat,
Oyster meat, clam worm, promote female, male parent population further ripe, and daily ration of feeding is the 5% ~ 8% of fish body weight, and the bait throwing in time is in the morning 8:
00 and afternoon 17:00；Control 28 ~ 31 DEG C of water temperature, salinity 26 ~ 31, pH value 8.2 ~ 8.5, DO 5.0 ~ 7.0mg/L of value, day quantity of exchanged water
100% ~ 200%, dim light, inflation.
2nd, result：This obtains the tail of Duo Lin Xi parent populations 3160.Cultivated through 3 months, reach egg-laying season first, highest daily output
Ovum amount reaches 2.2kg, adds up to more than 600 ten thousand, and incubation rate more than 89% obtains Duo Lin Xi F2For the cement pit full people of cultured population parent population
The success that work is cultivated.
Embodiment 4：Duo Lin Xi F3Batch parent population is obtained for pond culture colony.
First, method
1st, Duo Lin Xi are propagated artificially：In embodiment 2 and the F of embodiment 32Selected standby parent population in cultured population, through accelerating
Cultivate, obtain batch embryonated egg, embryonated egg through artificial culture, the granted artificial seedling of amount；Selection Guangdong Ocean University East Sea Island sea
Foreign biological study area of base is 0.09 hm2Feed coefficient, sterilized, water filling, Fei Tang, foundation bait raised growth in water body
When, by 200,000 tails of density/hm2Deliver the Duo Lin Xi seedlings of 2 ~ 3cm of total length.
2nd, feeding and management：Many squama Xi special compound feeds are fed, day feeding volume is calculated by the 7% of many squama Xi body weight, per bu
Feed twice, and suitably increased and decreased according to weather, water quality and situation of ingesting.Right place feeds, and before feeding, pond is tapped in bait throwing in point
Wall, treats most fish to be gathered near bait throwing in point and is fed again；When feeding, will often fish net and drag for and reach the shoal of fish that ingests
In.Night often observes the active situation of fish with the stronger flashlight direct irradiation water surface for aquaculture of light.Daily blowdown 4 times, and
Increase new water, high temperature or low temperature season suitably increase water filling number of times, and improve water level to 1.6m.
3rd, harvesting：Harvesting, nylon wire during harvesting after being cultivated through 10 months, it is to avoid fish body is injured.
4th, raise and train：Duo Lin Xi after harvesting, select more than 40g individuality be put into specification for 30.7m × 8m × 1.5m, it is wide
Side is semicircle（￠ 8m）Outdoor bar shaped raceway pond in, carry out it is intensive propagate artificially entirely, feed Duo Lin Xi it is special coordinate raise
Material；Feedstuff feeding before feeding, pool wall is tapped in bait throwing in point by the way of right place feeds, and treats that most fish is gathered in
Fed again near bait throwing in point；When feeding, will often fish during net drags for and reach the shoal of fish that ingests；Night is often stronger with light
Flashlight direct irradiation water surface for aquaculture, observes the active situation of fish；During raising and train, every 10 days, pond once, trained its right
The adaptability for fishing, with draining to depth of water 20-30cm, operating personnel are into walking about in pond.
5th, parent population screening：Selection selection build it is regular, not injured, without deformity, constitution is strong, color and luster is normal, activity is sensitive,
The Duo Lin Xi adult fishes normal, disease-free, without parasite, more than 40g that ingest carry out parent fish rearing, in parent population, body weight as parent population
Adult fish the ratio more than adult fish of 40g ~ 60g/ tails and body weight 60g/ tails is 1:1, and the female-male proportion of adult fish is 1:1.
6th, parent fish rearing：To feed based on Duo Lin Xi special compound feeds, spawning the last week alternately feed chilled squid meat,
Oyster meat, clam worm, promote female, male parent population further ripe, and daily ration of feeding is the 5% ~ 8% of fish body weight, and the bait throwing in time is in the morning 8:
00 and afternoon 17:00；Control 28 ~ 31 DEG C of water temperature, salinity 26 ~ 31, pH value 8.2 ~ 8.5, DO 5.0 ~ 7.0mg/L of value, day quantity of exchanged water
100% ~ 200%, dim light, inflation.
2nd, result：This cultivates the tail of Duo Lin Xi parent populations 5860, is cultivated through 4 months, reaches egg-laying season first, highest daily output
Ovum amount reaches 11.3kg, adds up to more than 2,200 ten thousand, and incubation rate more than 89.2% obtains Duo Lin Xi F3For the full artificial culture of parent population into
Work(.
Claims (1)
1. a kind of method that batch obtains Duo Lin Xi parent populations, it is characterised in that：It is following steps：
（1）Duo Lin Xi are propagated artificially：Selection Duo Lin Xi seedlings are thrown to be cultivated in culturing pool；Breeding way is monoculture or and prawn
Raise together with；
（2）Feeding and management：The mode that feeds fed using right place feeds Duo Lin Xi special compound feeds, feed day feeding volume
It is the 5 ~ 8% of Duo Lin Xi body weight, feeds at twice daily, and is suitably increased and decreased according to weather, water quality and situation of ingesting；Daily blowdown 1
~ 4 times, and increase new water, high temperature or low temperature season suitably increase water filling number of times, keep 1.5 ~ 1.8m of culturing pool water level；During raising,
Carry out bait throwing in acclimatization training, sound acclimatization training, intensity of illumination acclimatization training and catch acclimatization training；
（3）Harvesting：Harvesting after being cultivated through 10 months；
（4）Raise and train：Duo Lin Xi after harvesting, the individuality for selecting more than 40g is put into culturing pool, is carried out intensive complete artificial foster
Grow, feed Duo Lin Xi special compound feeds；Mode is fed using right place, feed day feeding volume for Duo Lin Xi body weight 5% ~
8%, feed at twice daily；When raising and train, bait throwing in acclimatization training, sound acclimatization training, intensity of illumination acclimatization training are carried out
With seizure acclimatization training；During raising and train, every 10 days, pond once, draining to depth of water 20-30cm, operating personnel enter
Walked about in pond；
（5）Parent population is screened：Through more than 10 months cultivate, many squama Xi adult fishes are obtained in batches, now, selection build it is regular, not injured,
Without deformity, constitution is strong, color and luster is normal, activity is sensitive, it is normal, disease-free to ingest, many squamas without parasite, more than body weight 40g
Xi adult fishes are transferred to parent fish pond cultivation as parent population；In the parent population, adult fish the ratio more than adult fish of 40g ~ 60g/ tails and 60g/ tails
Example is 1:1, the female-male proportion in parent population is 1:1；
（6）Parent fish rearing：Duo Lin Xi special compound feeds are fed, spawning the last week feeds biological feed, and daily ration of feeding is fish body
The 5% ~ 8% of weight, the bait throwing in time is in the morning 8: 00 and afternoon 17:00；28 ~ 31 DEG C of water temperature of control, salinity 26 ~ 31, pH value 8.2 ~
8.5, DO 5.0 ~ 7.0mg/L of value, day quantity of exchanged water 100% ~ 200%, dim light, inflation；
Wherein, the right place feeds and refers to：When culturing pool is pond, it is fixed on bait table and feeds, culturing pool is cement pit
Then fed in fixed bait throwing in point；Feeding time is arranged on daily fixed time period；The sound acclimatization training refers to before feeding,
Cement pool wall is tapped in bait throwing in point or bait table is fed again；The intensity of illumination acclimatization training refer to night in pond or
Turned on light near cement pit or direct irradiation water surface for aquaculture；The seizure acclimatization training refers to when feeding, to stretch out one's hand or will fish net
Drag in reaching the shoal of fish that ingests；The biological feed refers to chilled squid, oyster, clam worm；Biological feed starts in spawning the last week
Feed, using chilled squid meat, oyster meat, clam worm alternately feed by the way of, biological feed day feeding volume for fish body weight 5% ~
8%。
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