CN115191383A - Breeding method for performing industrial material transfer domestication and standard thickening of carnivorous fish seedlings by utilizing re-made slender feed - Google Patents
Breeding method for performing industrial material transfer domestication and standard thickening of carnivorous fish seedlings by utilizing re-made slender feed Download PDFInfo
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 56
- 238000012546 transfer Methods 0.000 title claims abstract description 15
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- 238000009395 breeding Methods 0.000 title claims description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 238000004659 sterilization and disinfection Methods 0.000 claims description 35
- 238000002791 soaking Methods 0.000 claims description 33
- CPKVUHPKYQGHMW-UHFFFAOYSA-N 1-ethenylpyrrolidin-2-one;molecular iodine Chemical compound II.C=CN1CCCC1=O CPKVUHPKYQGHMW-UHFFFAOYSA-N 0.000 claims description 25
- 229920000153 Povidone-iodine Polymers 0.000 claims description 25
- 229960001621 povidone-iodine Drugs 0.000 claims description 25
- 238000012216 screening Methods 0.000 claims description 20
- 150000001875 compounds Chemical class 0.000 claims description 19
- 235000012149 noodles Nutrition 0.000 claims description 14
- 241000239250 Copepoda Species 0.000 claims description 10
- 239000008213 purified water Substances 0.000 claims description 9
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 241000595940 Notostraca Species 0.000 claims description 6
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- 239000012535 impurity Substances 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 4
- 235000014655 lactic acid Nutrition 0.000 claims description 4
- 239000004310 lactic acid Substances 0.000 claims description 4
- 238000004898 kneading Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 241000239370 Euphausia superba Species 0.000 claims 1
- 230000001488 breeding effect Effects 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- 208000004232 Enteritis Diseases 0.000 abstract description 7
- 230000004083 survival effect Effects 0.000 abstract description 7
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 238000012136 culture method Methods 0.000 abstract description 3
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- 235000013343 vitamin Nutrition 0.000 description 3
- 239000011782 vitamin Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 2
- 244000144974 aquaculture Species 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
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- 241000186660 Lactobacillus Species 0.000 description 1
- 208000003351 Melanosis Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000264847 Siniperca chuatsi Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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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
- A01K61/10—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
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Abstract
The invention discloses a culture method for domesticating and marking thickness of carnivorous fish seedlings through industrialized material transfer by utilizing re-prepared thin-strip feed. The method is used for industrially and finely domesticating the carnivorous fish seedlings, solves the industrial problems of frequent enteritis and low survival rate in the seedling transferring stage, and obviously improves the probability of raising the seedlings. Compared with the prior art, the method effectively solves the problems of frequent enteritis of the fries, low resistance and concurrent diseases caused by improper feeding method in the feeding and domesticating stage of the prior art through refined operation, can reduce the use of antibiotics and other medicines in the fries, is favorable for protecting the environment and improving the quality of commercial fishes, and obviously improves the growth performance and survival rate of the cultured fishes.
Description
Technical Field
The invention relates to the technical field of aquaculture, in particular to a culture method for performing industrial material transfer domestication and labeling of carnivorous fish seedlings by utilizing return thin-strip feed.
Background
Carnivorous fishes such as weever, grouper, mandarin fish and the like mainly feed on other fishes, crustaceans and cephalopods, and live in the benthic environment to prey on aquatic animals, so that the weever, the grouper, the mandarin fish and the like are more inclined to feed sinking feed in aquaculture production.
The method is characterized in that after hatching carnivorous fishes, aquatic zooplankton is fed after the carnivorous fishes are hatched, seedlings of the cultured carnivorous fishes need to be domesticated from the feeding zooplankton into feeding particle compound feed, the seedling immune system in a domestication stage is incomplete to develop, the seedlings are very easy to be attacked by diseases such as melanosis and enteritis, particularly in the domestication process, most of the conventional operations are directly fed with the particle compound feed or powder, the particle feed contains no moisture and is completely different from the water content of fresh baits, the seedlings are used to eat the fresh baits, the seedlings are directly fed with the particle feed or powder, habitual satiation can be caused by the seedlings, indigestion induces the seedlings to generate enteritis, the resistance of the seedlings is weakened, the seedlings are damaged and die in a large scale, and the survival rate in the domestication and standard thickness stages is extremely low. The industrial material transfer domestication and low survival rate of carnivorous fish seedlings become important factors influencing the healthy development of the industry.
Disclosure of Invention
The invention aims to provide a culture method for the factory material transfer domestication and standard thickness of carnivorous fish seedlings by utilizing return thin strip feed, which mainly solves the problem that enteritis and disease outbreak of the seedlings are caused by the change of bait types in the process of transferring the carnivorous fish seedlings, and ensures that the survival rate of the carnivorous fish seedlings in the material transfer and standard thickness stages is high and the death rate of the carnivorous fish seedlings in the factory material transfer domestication and standard thickness stages is high and the problem of high death rate in the standard thickness stages are solved by preparing the return mixed feed of the thin strips and matching with the life habits of the seedlings and the operation method which is favorable for the digestion and absorption of the seedlings.
The invention is realized by the following technical scheme:
a method for industrially transferring and domesticating carnivorous fish seedlings and marking the thickness of the carnivorous fish seedlings by utilizing return thin-strip feed comprises the following steps:
(1) Soaking the young seedling compound feed with purified water, stirring again, kneading into dough, and returning to the preparation of feed dough;
(2) After the seedlings are caught and fed to live copepods and fairy bugs grow to a certain specification, returning the feed balls to prepare No. 1 thin feed by hands, and gradually feeding the returned No. 1 thin feed to the seedlings for transferring and domesticating;
(3) After the seedlings all eat the No. 1 slivers, grow to a slightly larger size, the return feed is made into No. 2 slivers by a noodle maker, and the No. 2 slivers are fed until the seedlings become full, and the No. 1 slivers are fed until the seedlings do not eat any more;
(4) After the seedlings eat the No. 2 slivers and grow to be larger in size, the re-prepared feed is made into No. 3 slivers by a noodle maker, and the No. 3 slivers are fed until the seedlings do not eat any more;
(5) After the seedlings all ingest the No. 3 slim feed and grow to the standard specification, the resistance of the seedlings is stronger at the moment, the return slim feed does not need to be fed, the granulated feed soaked in purified water is fed until the seedlings do not ingest any more, the seedlings basically break away from the critical period of the standard coarse stage, and the seedlings can be transferred to the commercialized culture stage.
In the step (1), the compound feed is conventional seedling sinking granule compound feed. The compound feed can also be added with at least one of antarctic krill powder, lactobacillus, compound vitamin and immunopotentiator to prepare multifunctional re-processed feed dough.
In the step (2), the certain specification refers to that the total length is more than 2.5 cm.
In the step (3), the slightly larger specification means that the total length is more than 3.5 cm.
In the step (4), the larger specification means that the total length is more than 5.0 cm.
In the step (5), the standard specification refers to that the total length is more than 10.0 cm.
In the step (2), the No. 1 thin-strip feed has the diameter of less than 1mm and the length of 0.2-0.5 cm.
In the step (3), the No. 2 thin-strip feed has the diameter of less than 1-2 mm and the length of 0.2-1.5 cm.
In the step (4), the No. 3 sliver feed has the diameter of less than 2-3 mm and the length of 0.2-1.5 cm.
Preferably, the seedlings need to be screened once every 1.5-3 days during the seedling culture period to prevent the seedlings from killing each other, and the seedlings need to be disinfected after each screening.
Preferably, the process of screening the seedlings is an aqueous operation.
Preferably, the disinfection treatment is continuous disinfection treatment by adopting a conventional aquatic product povidone iodine soaking disinfection method, wherein povidone iodine with the concentration of 1-5 ppm is soaked for 3 times every day and each time lasts for 2 hours; after each soaking and disinfection, the soaked water body is slowly discharged at the speed of not more than 500mL per second, so that the young fish is prevented from being adsorbed and damaged at a high water discharge speed until three quarters of the soaked water body is discharged.
Preferably, the cement pool specification for cultivating the seedlings is as follows: the height is 1.2 meters, the area is 5-15 square meters, and the culture water is 5-15 tons.
Preferably, the culture water used in the seedling culture period needs to be subjected to sand filtration, and the filtered water body is clear and free of impurities.
Preferably, in the step (2), the live copepods and the fairy shrimp are sterilized by a conventional povidone iodine soaking method for aquatic products and then fed.
The method provided by the invention is mainly based on the ingestion habit of the carnivorous fish seedlings and the obvious defects of the existing seedling raising technology, starts with the bait link emphatically, and carries out industrial refined domestication on the carnivorous fish seedlings, thereby solving the industrial problems of frequent enteritis and low survival rate in the seedling transferring stage, and obviously improving the probability of raising the carnivorous fish seedlings. Compared with the prior art, the method effectively solves the problems of frequent enteritis of the fries, low resistance and concurrent diseases caused by improper feeding method in the feeding and domesticating stage of the prior art through refined operation, can reduce the use of antibiotics and other medicines in the fries, is favorable for protecting the environment and improving the quality of commercial fishes, and obviously improves the growth performance and survival rate of the cultured fishes.
Detailed Description
The following examples are further illustrative of the present invention and are not intended to be limiting thereof.
Example 1
A method for industrially transferring and domesticating carnivorous fish seedlings and marking the thickness of the carnivorous fish seedlings by utilizing re-made thin-strip feed comprises the following steps of:
(1) The feed dough is prepared by soaking the Dongxiang spot seedling compound feed in purified water, re-stirring and kneading into dough, and then making the dough into the feed dough. When the feed ball is re-prepared, one or more of antarctic krill powder, lactic acid bacteria, compound vitamins, immunopotentiators and the like can be added according to needs to prepare the re-prepared feed ball with multiple functions, wherein the Dongxiang grouper fry sinking granule compound feed is a conventional commercial grouper fry sinking granule compound feed.
(2) The specification of a cement pond for culturing the east star spot seedlings is as follows: the height is 1.2 meters, the area is 10 square meters, and the culture water body is 10 tons. The culture water is subjected to sand filtration treatment, and the filtered water body is clear and free of impurities. The fresh copepods and the fairy shrimp are sterilized by a conventional method of soaking the aquatic products with povidone iodine before feeding. Continuously disinfecting the east star spot catching seedlings by adopting a conventional aquatic povidone iodine soaking disinfection method, and soaking 3ppm of povidone iodine 3 times every day for 2 hours each time; after each soaking disinfection, slowly discharging the soaking water body at the speed of not more than 500mL per second, preventing the young fish from being adsorbed and damaged at high discharging speed until three quarters of the soaking water body is discharged. Catching east star spot seedlings, feeding fresh and live copepods and fairy bugs to grow to the full length of more than 2.5cm, rubbing the east star spot seedlings with hands to return to the prepared feed mass to prepare No. 1 thin feed with the diameter of less than 1mm and the length of 0.2cm, and gradually feeding the east star spot seedlings with the returned No. 1 thin feed for material transferring and domestication; in the stage, the east star spot seedlings with different sizes are screened once every 1.5 days, pond cultivation is carried out on the east star spot seedlings with different sizes, mutual scratching of fish bodies is avoided in order to avoid stress generated during screening of the east star spot seedlings, the process of screening the east star spot seedlings is all water-containing operation, the east star spot seedlings are transferred by water contained in a water ladle or a bucket, the east star spot seedlings are prevented from being directly fished out of the water surface by a net, and continuous disinfection treatment is carried out by a conventional aquatic product povidone iodine soaking disinfection method after the seedlings are screened every time.
(3) After all the east star spot seedlings eat the No. 1 slender feed and grow to be more than 3.5cm in full length, the returning feed dough is made into the No. 2 slender feed with the diameter of 1.5mm and the length of 0.5cm by a noodle maker, the No. 2 slender feed is fed until the feed is eight times full, and the No. 1 slender feed is fed until the feed is not eaten any more; in the stage, the seedlings are screened once every 2 days, the screening operation of the east star spot seedlings is the same as the step (2), the seedlings are continuously disinfected by adopting a conventional povidone iodine soaking disinfection method for aquatic products after being screened every time, and the disinfection step is the same as the step (2).
(4) After the east star spot seedlings all eat the No. 2 slivers of feed and grow to the full length of more than 5.0cm, a noodle maker is adopted to prepare the returning feed dough into the No. 3 slivers of feed with the diameter of 2.5mm and the length of 0.5cm, and the No. 3 slivers of feed are fed until the seedlings do not eat any more; in the stage, the seedlings are screened once every 3 days, the screening operation of the east star spot seedlings is the same as the step (2), the seedlings are continuously disinfected by adopting a conventional povidone iodine soaking disinfection method for aquatic products after being screened every time, and the disinfection step is the same as the step (2).
(5) After the east star spot seedlings all eat the No. 3 thin feed and grow to be more than 10.0cm in full length, the east star spot seedlings have stronger resistance, the return thin feed does not need to be fed, the granulated feed soaked in the purified water is fed until the east star spot seedlings do not eat any more, the seedlings basically break away from the critical period of the standard coarse stage, and the seedlings can be transferred to the commercial culture stage.
Example 2
A method for industrially transferring and domesticating carnivorous fish seedlings and marking the thickness of the carnivorous fish seedlings by utilizing return thin-strip feed comprises the following steps:
(1) The compound feed for the weever fries is soaked and softened by the purified water, then is stirred again and is kneaded into a dough-shaped feed dough to be returned to the feed dough, the soaked and softened feed can be stirred into a strip shape by a noodle maker, and then the strip-shaped feed is kneaded into the dough shape, so that the feed dough extruded by the noodle maker has better toughness and is not easy to scatter after being put into water. When the feed dough is re-prepared, one or more of antarctic krill meal, lactic acid bacteria, multivitamins, immunopotentiators and the like can be added according to needs to prepare the re-prepared feed dough with multiple functions, wherein the compound feed for the weever fries is a conventional commercial sinking particle compound feed for the weever fries.
(2) The cement pond specification of cultivating weever fry is: the height is 2.0 meters, the area is 15 square meters, and the culture water body is preferably 24 tons. The culture water is subjected to sand filtration treatment, and the filtered water body is clear and free of impurities. The fresh copepods and the fairy shrimp are sterilized by a conventional method of soaking the aquatic products with povidone iodine before feeding. The perch fry is continuously sterilized by adopting a conventional aquatic product povidone iodine soaking sterilization method, 3ppm of povidone iodine is soaked for 3 times every day, and each time lasts for 2 hours; after each soaking and disinfection, the soaked water body is slowly discharged at the speed of not more than 1000mL per second, so that the young fish is prevented from being adsorbed and damaged at a high water discharge speed until three quarters of the soaked water body is discharged. After the weever fries are caught and fed with fresh and live copepods and the fairy shrimp grow to the full length of more than 2.0cm, the weever fries are rubbed by hands to return the feed clusters to form No. 1 thin feed with the diameter of less than 1mm and the length of 0.2cm, and the weever fries are gradually added and fed with the returned No. 1 thin feed for material transfer and domestication; screening is carried out once every 1.5 days in the stage, the weever seedlings with different sizes are cultured in separate ponds, stress generated in the process of screening the weever seedlings is avoided, mutual scratching of fish bodies is also avoided, the process of screening the weever seedlings is water-containing operation, the weever seedlings are transferred by using a water ladle or a barrel to contain water, the net is prevented from directly fishing out the weever seedlings from the water surface, and the conventional aquatic product povidone iodine soaking disinfection method is adopted for continuous disinfection treatment after the weever seedlings are screened every time.
(3) After the perch fry completely ingest the No. 1 slivers of feed to reach the full length of more than 3.0cm, the returned feed is made into No. 2 slivers of feed with the diameter of 1.5mm and the length of 0.5cm by a noodle maker, and the No. 2 slivers of feed are fed until the perch fry is fully eaten, and the No. 1 slivers of feed are fed until the perch fry does not ingest any more; in the stage, the weever fries are screened once every 2 days, the screening operation of the weever fries is the same as that in the step (2), after the fries are screened every time, the conventional aquatic product povidone iodine soaking disinfection method is adopted for continuous disinfection treatment, and the disinfection step is the same as that in the step (2).
(4) After the perch fry completely ingest the No. 2 slivers of feed and grow to the full length of more than 4.0cm, the returned feed is made into No. 3 slivers of feed with the diameter of 2.5mm and the length of 0.8cm by a noodle maker, and the No. 3 slivers of feed are fed until no more ingestion is achieved; in the stage, the weever fries are screened once every 3 days, the screening operation of the weever fries is the same as the step (2), and after the fries are screened every time, the continuous disinfection treatment is carried out by adopting a conventional aquatic povidone iodine soaking disinfection method, and the disinfection step is the same as the step (2).
(5) After the weever fries all eat the number 3 slender feed and grow to the full length of more than 7.0cm, the weever fries have stronger resistance at this moment, and the returning to the production slender feed is not needed to be fed, and the granulated feed which is soaked in the pure water to be soft is fed until the weever fries do not eat any more, and the fries basically break away from the critical period of the standard-coarse stage and can be transferred to the commercialized culture stage.
Example 3
A method for industrially transferring and domesticating carnivorous fish seedlings and marking the thickness of the carnivorous fish seedlings by utilizing return thin-strip feed comprises the following steps:
(1) The purified water is used for soaking and softening the mandarin fish fry compound feed, then the mixture is stirred again and kneaded into dough-shaped feed dough, the soaked and softened feed can be stirred into strips by a noodle maker firstly, then the strip-shaped feed dough is kneaded into dough-shaped feed dough, and the feed dough extruded by the noodle maker has better toughness and is not easy to scatter after being put into water. When the feed dough is prepared again, one or more of antarctic krill powder, lactic acid bacteria, compound vitamins, immunopotentiators and the like can be added according to needs to prepare the multifunctional prepared feed dough, wherein the mandarin fish fry compound feed is a conventional commercial grouper fry sinking granule compound feed.
(2) The specification of the cement pond for cultivating the mandarin fish fries is as follows: the height is 1.5 meters, the area is 12 square meters, and the culture water body is 12 tons. The culture water is subjected to sand filtration treatment, and the filtered water body is clear and free of impurities. The fresh copepods and the fairy shrimp are sterilized by a conventional method of soaking the aquatic products with povidone iodine before feeding. The Siniperca chuatsi fries are continuously sterilized by a conventional aquatic povidone iodine soaking sterilization method, 3ppm of povidone iodine is soaked for 3 times every day, and each time lasts for 2 hours; after each soaking and disinfection, slowly discharging the soaking water body at the speed of not more than 750mL per second, preventing young fish from being adsorbed and damaged at high water discharging speed until three quarters of the soaking water body is discharged. After the mandarin fish fries are caught and fed with fresh copepoda and the artemia grow to the full length of more than 2.5cm, the mandarin fish fries are rubbed by hands to return the feed clusters to 1 # slivers of which the diameter is less than 1mm and the length is 0.2cm, and the returned 1 # slivers of the mandarin fish fries are gradually added and fed for transferring and domesticating; screening the mandarin fish at intervals of 1.5 days, culturing mandarin fish fries of different sizes in different pools, avoiding mutual scratching of fish bodies due to stress generated during screening of the mandarin fish fries, performing water-containing operation in the process of screening the mandarin fish fries, transferring the mandarin fish fries by using a water ladle or a bucket to contain water, avoiding directly fishing the mandarin fish fries out of the water surface by using a net, and continuously sterilizing by adopting a conventional povidone iodine soaking sterilization method after the mandarin fish fries are screened every time.
(3) After the mandarin fish fries all eat the No. 1 slivers of feed to reach the full length of more than 3.5cm, the returning feed is made into No. 2 slivers of feed with the diameter of 1.5mm and the length of 0.5cm by a noodle maker, the No. 2 slivers of feed are fed until the fish becomes full, and the No. 1 slivers of feed are fed until the fish does not eat any more; in the stage, the screening is carried out once every 2 days, the screening operation of the mandarin fish fries is the same as the step (2), the continuous disinfection treatment is carried out by adopting a conventional povidone iodine soaking disinfection method for aquatic products after the fries are screened every time, and the disinfection step is the same as the step (2).
(4) After the mandarin fish fries are completely fed with No. 2 slivers of feed and grow to the full length of more than 5.0cm, a noodle maker is adopted to agglomerate the re-prepared feed into No. 3 slivers of feed with the diameter of 2.5mm and the length of 1.0cm, and the No. 3 slivers of feed are fed until the fish does not feed any more; in the stage, the screening is carried out once every 3 days, the screening operation of the mandarin fish fries is the same as the step (2), the continuous disinfection treatment is carried out by adopting a conventional povidone iodine soaking disinfection method for aquatic products after the fries are screened every time, and the disinfection step is the same as the step (2).
(5) After the mandarin fish fries are all fed with No. 3 slivers of feed to reach the full length of more than 8.0cm, the mandarin fish fries have stronger resistance, the return slivers of feed do not need to be fed, the granulated feed soaked in purified water is fed until the mandarin fish fries are not fed any more, the fries basically leave the critical period of the coarse stage, and the mandarin fish fries can be transferred to the commercial culture stage.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (9)
1. A method for cultivating carnivorous fish seedlings through industrialized material transfer domestication and standard thickness transformation by utilizing return thin-strip feed is characterized by comprising the following steps of:
(1) Soaking the young seedling compound feed with purified water, stirring again, kneading into dough, and returning to the preparation of feed dough;
(2) After the seedlings are caught and fed to live copepods and fairy bugs grow to a certain specification, returning the feed balls to prepare No. 1 thin feed by hands, and gradually feeding the returned No. 1 thin feed to the seedlings for transferring and domesticating;
(3) After the seedlings all eat the No. 1 slivers, grow to a slightly larger size, the return feed is made into No. 2 slivers by a noodle maker, and the No. 2 slivers are fed until the seedlings become full, and the No. 1 slivers are fed until the seedlings do not eat any more;
(4) After the seedlings eat the No. 2 slivers and grow to be larger in size, the re-prepared feed is made into No. 3 slivers by a noodle maker, and the No. 3 slivers are fed until the seedlings do not eat any more;
(5) After the seedlings all ingest the No. 3 slim feed and grow to the standard specification, the resistance of the seedlings is stronger at the moment, the return slim feed does not need to be fed, the granulated feed soaked in purified water is fed until the seedlings do not ingest any more, the seedlings basically break away from the critical period of the standard coarse stage, and the seedlings can be transferred to the commercialized culture stage.
2. The method for industrial material transfer and domestication and standard thickness culture of carnivorous fish seedlings by using the returned thin strip feed as claimed in claim 1, wherein in the step (1), at least one of euphausia superba powder, lactic acid bacteria, multivitamins and immunopotentiators can be added into the compound feed to prepare the multifunctional returned feed mass.
3. The method for industrially transferring and domesticating carnivorous fish seedlings and marking the fish diameter according to the claim 1, wherein in the step (2), the specific specification means that the total length is more than 2.5 cm; in the step (3), the slightly large specification means that the total length is more than 3.5 cm; in the step (4), the larger specification refers to the whole length of more than 5.0 cm; in the step (5), the standard specification refers to that the total length is more than 10.0 cm.
4. The method for industrially transferring and domesticating carnivorous fish seedlings and marking the thickness according to the claim 1, wherein in the step (2), the diameter of the No. 1 slender feed is less than 1mm, and the length is 0.2-0.5 cm; in the step (3), the No. 2 slender feed has the diameter of less than 1-2 mm and the length of 0.2-1.5 cm; in the step (4), the No. 3 thin strip feed has the diameter of less than 2-3 mm and the length of 0.2-1.5 cm.
5. The method for the industrial material transfer and domestication and standard thickening of young carnivorous fish with the thin strip feed back as claimed in claim 1, wherein during the young fish culture period, the young fish needs to be screened once every 1.5-3 days to prevent the young fish from killing each other, and the young fish needs to be disinfected after each screening.
6. The method for the industrial material transfer and domestication and standard-thickness cultivation of young carnivorous fishes by utilizing the returned thin strip feed as claimed in claim 5, wherein the process of screening the young fishes is all water-containing operation.
7. The method for the industrial material transfer and domestication and standard thickening of young carnivorous fish with the re-made thin strip feed as claimed in claim 5, wherein the disinfection treatment is a continuous disinfection treatment by a conventional povidone-iodine soaking disinfection method for aquatic products, and povidone-iodine is soaked for 3 times per day for 2 hours, with the concentration of povidone-iodine being 1 to 5 ppm; after each soaking and disinfection, the soaked water body is slowly discharged at the speed of not more than 500mL per second, so that the young fish is prevented from being adsorbed and damaged at a high water discharge speed until three quarters of the soaked water body is discharged.
8. The method as claimed in claim 1, wherein the culture water used during the culture of young fish needs to be sand-filtered, and the filtered water is clear and free of impurities.
9. The method for utilizing the re-made thin strip feed for the factory-like material transfer and domestication and standard-coarse breeding of the young carnivorous fishes according to the claim 1, wherein in the step (2), the fresh and alive copepods and the fairy shrimp are sterilized by the conventional povidone-iodine soaking method for the aquatic products and then can be fed.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496499A (en) * | 2008-01-28 | 2009-08-05 | 中国水产科学研究院东海水产研究所 | Oxyeleotris marmoratus food habit domestication method |
| CN103947586A (en) * | 2014-04-15 | 2014-07-30 | 新疆维吾尔自治区水产科学研究所 | Method for domesticating zander fry by using artificial compound feeds |
| CN112205327A (en) * | 2020-10-28 | 2021-01-12 | 广东梁氏水产种业有限公司 | Application of lactobacillus plantarum in improving domestication rate of artificial feed for siniperca chuatsi |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496499A (en) * | 2008-01-28 | 2009-08-05 | 中国水产科学研究院东海水产研究所 | Oxyeleotris marmoratus food habit domestication method |
| CN103947586A (en) * | 2014-04-15 | 2014-07-30 | 新疆维吾尔自治区水产科学研究所 | Method for domesticating zander fry by using artificial compound feeds |
| CN112205327A (en) * | 2020-10-28 | 2021-01-12 | 广东梁氏水产种业有限公司 | Application of lactobacillus plantarum in improving domestication rate of artificial feed for siniperca chuatsi |
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