CN110024725B - Artificial breeding method of acanthopagrus schlegelii - Google Patents
Artificial breeding method of acanthopagrus schlegelii Download PDFInfo
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- 238000009395 breeding Methods 0.000 title claims abstract description 26
- 241001247278 Acanthopagrus schlegelii Species 0.000 title claims description 7
- 241000251468 Actinopterygii Species 0.000 claims abstract description 51
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 25
- 239000011669 selenium Substances 0.000 claims abstract description 25
- 241000269814 Acanthopagrus latus Species 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
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- 240000008042 Zea mays Species 0.000 claims description 8
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 8
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 8
- 235000005822 corn Nutrition 0.000 claims description 8
- 208000003643 Callosities Diseases 0.000 claims description 7
- 206010020649 Hyperkeratosis Diseases 0.000 claims description 7
- 241000252234 Hypophthalmichthys nobilis Species 0.000 claims description 7
- 241000234295 Musa Species 0.000 claims description 7
- 229920002472 Starch Polymers 0.000 claims description 7
- 238000005276 aerator Methods 0.000 claims description 7
- 235000021015 bananas Nutrition 0.000 claims description 7
- 235000012813 breadcrumbs Nutrition 0.000 claims description 7
- 230000000243 photosynthetic effect Effects 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 235000019698 starch Nutrition 0.000 claims description 7
- 239000008107 starch Substances 0.000 claims description 7
- 241000143060 Americamysis bahia Species 0.000 claims description 6
- 241001247197 Cephalocarida Species 0.000 claims description 6
- 241000700141 Rotifera Species 0.000 claims description 6
- 230000001546 nitrifying effect Effects 0.000 claims description 6
- 235000011845 white flour Nutrition 0.000 claims description 6
- 241001290772 Limnodrilus Species 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000011449 brick Substances 0.000 claims description 5
- 239000011083 cement mortar Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 230000000384 rearing effect Effects 0.000 claims description 5
- 239000013535 sea water Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims 2
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 claims 1
- 241000108664 Nitrobacteria Species 0.000 claims 1
- 229930003268 Vitamin C Natural products 0.000 claims 1
- 235000019154 vitamin C Nutrition 0.000 claims 1
- 239000011718 vitamin C Substances 0.000 claims 1
- 235000013372 meat Nutrition 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000004083 survival effect Effects 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 12
- 230000001488 breeding effect Effects 0.000 description 11
- 241000238557 Decapoda Species 0.000 description 5
- 229940088594 vitamin Drugs 0.000 description 5
- 229930003231 vitamin Natural products 0.000 description 5
- 235000013343 vitamin Nutrition 0.000 description 5
- 239000011782 vitamin Substances 0.000 description 5
- 241000252233 Cyprinus carpio Species 0.000 description 4
- 241000269319 Squalius cephalus Species 0.000 description 3
- 241001494106 Stenotomus chrysops Species 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241000353172 Oplegnathus fasciatus Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000251464 Coelacanthiformes Species 0.000 description 1
- 241000264060 Lethrinus Species 0.000 description 1
- 241001071853 Lethrinus nebulosus Species 0.000 description 1
- 241001417534 Lutjanidae Species 0.000 description 1
- 241000133262 Nauplius Species 0.000 description 1
- 241000269810 Pagrus Species 0.000 description 1
- 241000276618 Perciformes Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 230000001502 supplementing effect Effects 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
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
- A01K61/10—Culture of aquatic animals of fish
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/30—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms
- A23K10/37—Animal feeding-stuffs from material of plant origin, e.g. roots, seeds or hay; from material of fungal origin, e.g. mushrooms from waste material
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/163—Sugars; Polysaccharides
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/80—Feeding-stuffs specially adapted for particular animals for aquatic animals, e.g. fish, crustaceans or molluscs
-
- 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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- 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
- Y02A40/818—Alternative feeds for fish, e.g. in aquacultures
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/87—Re-use of by-products of food processing for fodder production
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- Environmental Sciences (AREA)
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- Insects & Arthropods (AREA)
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- Fodder In General (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention provides an artificial breeding method of acanthopagrus latus, which comprises the following steps: the fry can be cultured in three stages, the survival rate of the fry can reach 90 percent under the condition of artificial culture, the fish body is strong, the fat content is lower and is less than 20 percent, the average body length reaches more than 40mm, the selenium-rich amount is more than 1.5mg/kg, the growth is fast, the period is short, the meat is fresh and tender, the taste is crisp, the sparus latus fries can be cultured in a large scale, the requirement of large-scale culture is met, and the economic benefit and the ecological benefit are obviously improved.
Description
Technical Field
The invention relates to the technical field of aquatic product cultivation, in particular to an artificial breeding method of acanthopagrus schlegelii.
Background
The stellate naked-buccal Pagrus (Lethrinus nebulosus) belongs to Osteichthyes, Perciformes, Percifidae, Lethridae, and Lethrinus. The spot naked cheek porgy is mainly distributed in south China sea, and the yield is more in the Hainan province. Is one of bottom trawl fishery fisheries in the provinces of Hainan, Guangdong, Guangxi and the like, is high-quality economical edible fish, is rich in nutrition, and is also another excellent variety in mariculture. However, the existing culture technology of the oplegnathus fasciatus is not mature, so that the survival rate is low, the growth cycle is long, the meat quality is poor and the like.
Disclosure of Invention
Therefore, the invention provides an artificial breeding method of the acanthopagrus schlegelii, which solves the technical problems.
The technical scheme of the invention is realized as follows: an artificial breeding method of acanthopagrus latus comprises the following steps:
(1) cultivation pool arrangement
Selecting a culture pond with the specification and area of 3-5 mu, leveling the pond, wherein the depth of the pond is more than 3 meters, the depth of water storage is more than 2.5 meters, red bricks are built on the inner slopes around the pond, cement mortar is used for plastering, the bottom of the pond is sandy loam, water inlets and water outlets are smooth, an aerator is arranged on diagonal lines of four corners of the pond, the stocking density of the larval fish is 4000-8000 tails/m2；
(2) Water quality management of cultivation pond
Keeping the transparency of the seedling raising pond at 45-60 cm, extracting seawater for regulation, changing water every 3-5 days, controlling the water temperature to be 25-30 ℃, controlling the pH value to be 6.0-9.0, and spraying photosynthetic bacteria 0.5-1 × 109 CFU/mL, nitrifying bacteria 1.8-2.7 × 109 CFU/mL and denitrifying bacteria 1-2.2 × 109 CFU/mL for 1-3 times every 7-10 days;
(3) management of oxygen-increasing machines
At noon or afternoon in a fine day 2: 00-3: 00 starting the machine for 30-60 min, and starting the machine in the next morning of cloudy day for 5: 00-7: 00 starting up the machine for 60-80 min;
(4) fry rearing
The first stage is as follows: the fry fed by the opening is cultured in an incubator to reach 1-3 cm and 8-12 days, and the stocking density is 1500-3000 tails/m2Keeping the water depth to be 1.8m, and feeding the materials according to the mass ratio of 1-3: 2.1-3.5: 1.8-3.6: 2-3.1 of vitamins, rotifers, limnodrilus, and artemia nauplii, wherein the fed bait is 4-5 times of that of the larval fish;
and a second stage:feeding 3-6 cm-long fry for 12-15 days, wherein the stocking density is 1200-1500 tails/m2Keeping the water depth to be 2.0m, and feeding the fish with the feeding mass ratio of 1: 1-4: 3-7 of silver carp fries, bighead carp fries, carp fries and the like are fed with baits 6-8 times of the fries, and then are transferred into a culture pond for culture;
and a third stage: feeding the larval fish with the total length of 7-9 cm for 15-22 days, wherein the stocking density is 300-500 tails/m2Keeping the water depth to be 2.5m, feeding fishes, shrimps, fish eggs, snails and artificial ingredients, wherein the feeding amount of the bait is 8-10 times that of the fry.
Further, the artificial ingredients in the third stage comprise the following raw materials in parts by weight: 38-70 parts of bananas, 21-65 parts of selenium-rich corns, 44-50 parts of white flour, 25-38 parts of starch, 50-80 parts of selenium-rich bran and 60-100 parts of bread crumbs.
Further, the mass ratio of the fish, the shrimp, the fish eggs and the snails in the third stage is 1-5: 3-5: 4 to 9.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, a flat pond is selected as a culture pond, water quality management is carried out on the culture pond, an aerator is arranged, the water quality of the culture pond is purified and the oxygen content is kept by arranging the aerator and splashing beneficial bacteria, the culture pond has a good self-purification water quality effect under the action of microorganisms, and the culture of seedling is facilitated;
(2) in addition, the fry breeding is divided into three stages for breeding, different baits are fed in each stage, the proportion of the baits is strictly controlled, scientific matching is achieved, the absorption of the fry breeding is mutually promoted, the growth rule of the fry is combined, the selenium-rich artificial ingredients are added in the third stage of the fry breeding and the first and second stages of the fry breeding and combined with fish, shrimp, fish roe and snail, the absorption of selenium element in the growth process of the fry is promoted, the immunity of the fish body can be enhanced, and then people can achieve the purpose of supplementing selenium for the human body by eating the fish meat.
Detailed Description
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.
The experimental methods used in the examples of the present invention are all conventional methods unless otherwise specified.
The materials, reagents and the like used in the examples of the present invention can be obtained commercially without specific description.
Example 1
An artificial breeding method of acanthopagrus latus comprises the following steps:
(1) cultivation pool arrangement
Selecting a culture pond with the specification and area of 3 mu, leveling the pond, the depth of the pond is more than 3 meters, the water storage depth is more than 2.5 meters, building red bricks on the inner slopes of the periphery of the pond, plastering cement mortar, sandy loam at the bottom of the pond, smooth water inlet and outlet, installing an aerator on diagonal lines of four corners of the pond, and setting the stocking density of the fry to 4000 tails/m2；
(2) Water quality management of cultivation pond
Keeping the transparency of the seedling pond at 45cm, extracting seawater to adjust, changing water every 3d, controlling water temperature at 25 deg.C, pH at 6.0, dissolved oxygen at 3mg/L, and sprinkling photosynthetic bacteria 0.5 × 10 for 1 time every 7d9CFU/mL, nitrifying bacteria 1.8X 109CFU/mL, denitrifying bacteria 1X 109CFU/mL；
(3) Management of oxygen-increasing machines
At noon or afternoon in a fine day 2: 00-3: 00 start-up for 30min, the next morning of cloudy day 5: 00-7: 00 starting up the machine for 60 min;
(4) fry rearing
The first stage is as follows: culturing the fish fry fed at the opening in an incubator to reach 1cm, and culturing for 8 days at a stocking density of 1500 tails/m2Keeping the water depth to be 1.8m, and feeding the feed according to the mass ratio of 1: 2.1: 1.8: 2, feeding 4 times of the bait to the larvae of the vitamin, the rotifer, the limnodrilus and the artemia nauplius;
and a second stage: feeding 3-6 cm-long fry for 12 days with stocking density of 1200 tails/m2Keeping the water depth to be 2.0m, and feeding the fish with the feeding mass ratio of 1: 1: 3 feeding the chub, bighead carp, carp and other fries with 6 times of bait, and then transferring the fries into a culture pond for culture;
and a third stage: feeding the larval fish with the total length of 7-9 cm for 15-22 days, wherein the stocking density is 300 tails/m2Keeping the water depth at 2.5m, feeding fishes, shrimps, fish eggs, snails and artificial ingredients, wherein the feeding amount of the bait is 8 times that of the larval fish.
Further, the artificial ingredients in the third stage comprise the following raw materials in parts by weight: 38 parts of bananas, 21 parts of selenium-rich corns, 44 parts of white flour, 25 parts of starch, 50 parts of selenium-rich bran and 60 parts of bread crumbs.
Further, the mass ratio of the fish, the shrimp, the fish eggs and the snails in the third stage is 1: 3: 4.
example 2
An artificial breeding method of acanthopagrus latus comprises the following steps:
(1) cultivation pool arrangement
Selecting a culture pond with the specification and area of 5 mu, leveling the pond, the depth of the pond is more than 3 meters, the water storage depth is more than 2.5 meters, building red bricks on the inner slopes of the periphery of the pond, plastering cement mortar, sandy loam at the bottom of the pond, smooth water inlet and outlet, installing an aerator on diagonal lines of four corners of the pond, and setting the stocking density of the fry to 8000 fish/m2；
(2) Water quality management of cultivation pond
Keeping the transparency of the seedling raising pond at 60cm, extracting seawater to adjust, changing water every 5 days, controlling the water temperature at 30 deg.C, pH at 9.0, dissolved oxygen at 5mg/L, and sprinkling photosynthetic bacteria 1 × 10 for 3 times every 10 days9CFU/mL, nitrifying bacteria 2.7X 109CFU/mL, denitrifying bacteria 2.2X 109CFU/mL；
(3) Management of oxygen-increasing machines
At noon or afternoon in a fine day 2: 00-3: 00 starting up for 60min, the next morning of cloudy day 5: 00-7: 00 starting up the machine for 80 min;
(4) fry rearing
The first stage is as follows: the fry fed by the starter is cultured in an incubator to reach 3cm and 12 days, and the stocking density is 3000 tails/m2Keeping the water depth to be 1.8m, wherein the mass ratio after opening is 3: 3.5: 3.6: 3.1, feeding 4-5 times of the bait to the larvae of the vitamins, the rotifers, the limnodrils and the artemia nauplii;
and a second stage: has a total length of3-6 cm of fry are raised for 15 days, and the stocking density is 1500 tails/m2Keeping the water depth to be 2.0m, and feeding the fish with the feeding mass ratio of 1: 4: 7, feeding the chub, bighead carp, carp and other fries with 6-8 times of bait, and then transferring the fries into a culture pond for culture;
and a third stage: feeding the larval fish with the total length of 7-9 cm for 15-22 days, wherein the stocking density is 300-500 tails/m2Keeping the water depth to be 2.5m, feeding fishes, shrimps, fish eggs, snails and artificial ingredients, wherein the feeding amount of the bait is 8-10 times that of the fry.
Further, the artificial ingredients in the third stage comprise the following raw materials in parts by weight: 70 parts of bananas, 65 parts of selenium-rich corns, 50 parts of white flour, 38 parts of starch, 80 parts of selenium-rich bran and 100 parts of bread crumbs.
Further, the mass ratio of the fish, the shrimp, the fish eggs and the snails in the third stage is 5: 5: 9
Example 3
An artificial breeding method of acanthopagrus latus comprises the following steps:
(1) cultivation pool arrangement
Selecting a culture pond with a specification and area of 4 mu, leveling the pond, wherein the pond depth is more than 3m, the water storage depth is more than 2.5m, red bricks are built on the inner slopes of the periphery of the pond, cement mortar is used for plastering, the bottom of the pond is sandy loam, water inlets and water outlets are smooth, an aerator is arranged on diagonal lines of four corners of the pond, and the fry stocking density is 6000 fish/m2；
(2) Water quality management of cultivation pond
Keeping the transparency of the pond at 50cm, extracting seawater to adjust, changing water every 4d, controlling water temperature at 28 deg.C, pH at 7.0, dissolved oxygen at 4mg/L, sprinkling photosynthetic bacteria 0.8 × 10 for 2 times every 8d9CFU/mL, nitrifying bacteria 2.3X 109CFU/mL, denitrifying bacteria 1.8X 109CFU/mL；
(3) Management of oxygen-increasing machines
At noon or afternoon in a fine day 2: 00-3: 00 starting up for 50min, the next morning of cloudy day 5: 00-7: 00 starting up the machine for 70 min;
(4) fry rearing
The first stage is as follows: the fry fed by the opening is cultured in an incubator to reach 1-3 cm, the breeding time is 10 days, and the stocking density is highIs 2000 tail/m2Keeping the water depth to be 1.8m, and feeding the feed according to the mass ratio of 2: 3: 2.8: 2.5 of vitamins, rotifer, limnodrilus, artemia nauplii, and feeding bait 4.5 times of that of the larval fish;
and a second stage: feeding 3-6 cm-long fry for 13 days, wherein the stocking density is 1300 tails/m2Keeping the water depth to be 2.0m, and feeding the fish with the feeding mass ratio of 1: 2: 5, feeding 7 times of bait for the chub, bighead carp, carp and other fries, and then transferring the fries into a culture pond for culture;
and a third stage: feeding the larval fish with the total length of 7-9 cm for 18 days, wherein the stocking density is 400 tails/m2Keeping the water depth at 2.5m, feeding fishes, shrimps, fish eggs, snails and artificial ingredients, wherein the feeding amount of the bait is 9 times that of the larval fish.
Further, the artificial ingredients in the third stage comprise the following raw materials in parts by weight: 52 parts of bananas, 43 parts of selenium-rich corns, 47 parts of white flour, 32 parts of starch, 65 parts of selenium-rich bran and 80 parts of bread crumbs.
Further, the mass ratio of the fish, the shrimp, the fish eggs and the snails in the third stage is 3: 4: 7.
comparative example 1
The present comparative example is different from example 3 in that photosynthetic bacteria, nitrifying bacteria and denitrifying bacteria are not splashed in the water quality management of the culture pond in the artificial breeding method of the oplegnathus fasciatus.
Comparative example 2
The difference between the comparative example and the example 3 is that the artificial breeding method of the acanthopagrus schlegelii adopts the same stage of breeding in the process of breeding the fry, and the bait is prepared from the following materials in a mass ratio of 1-3: 2.1-3.5: 1.8-3.6: 2-3.1 of vitamins, rotifers, limnodrilus, and artemia nauplii, wherein the bait is fed 4-5 times of that of the larval fish.
Comparative example 3
The difference between the comparative example and the example 3 is that the artificial ingredients of the acanthopagrus schlegelii do not contain selenium-enriched corn and selenium-enriched bran in the third stage of fry culture.
Comparative example 4
The difference between the comparative example and the example 3 is that the artificial ingredients for the larval fish in the third stage of larval fish culture comprise the following raw materials in parts by weight: 20 parts of bananas, 18 parts of selenium-rich corns, 40 parts of white flour, 22 parts of starch, 45 parts of selenium-rich bran and 50 parts of bread crumbs.
Determination of results
The present invention makes statistics on the hatchability, survival rate, fat content, average body weight, meat quality, and other indicators of the spot naked cheek snapper obtained in examples 1 to 3 and comparative examples 1 to 4, and the results are shown in table 1.
As can be seen from table 1, in the artificial breeding method of the spot naked cheek porgy, under the control of the breeding conditions and the water quality management of the breeding pond, the survival rate of the fry can reach 90% under the artificial breeding conditions in the embodiment compared with the comparative example 1; the bait with scientific proportion is coordinated, and is blended in three stages, and the selenium-rich artificial ingredients are reasonably added, so that the fish in the embodiment is obviously healthy and strong, the fat content is lower and less than 20%, and the average body length is more than 40mm in comparison with the same stage of cultivation in a comparative example 2; in comparative examples 3-4, the artificial selenium-enriched ingredients are not contained or the mixture ratio of the invention is not satisfied, but in the larval fish cultivation stage of the invention, the average selenium-enriched amount is more than 1.5mg/kg, the growth is fast, the period is short, the meat quality is fresh and tender, the taste is fresh and crisp, the larval porgy fries can be cultivated on a large scale, the requirement of large-scale cultivation is satisfied, and the economic benefit and the ecological benefit are obviously improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. An artificial breeding method of acanthopagrus schlegelii is characterized in that: the method comprises the following steps:
(1) cultivation pool arrangement
Selecting a culture pond with the specification and area of 3-5 mu, leveling the pond, building red bricks on the inner slope of the periphery of the pond, plastering cement mortar, taking sandy loam as the bottom of the pond, and installing an aerator on diagonal lines of four corners of the pond, wherein the depth of the pond is more than 3 m;
(2) water quality management of cultivation pond
Keeping the transparency of the seedling raising pond at 45-60 cm, extracting seawater to adjust, changing water every 3-5 days, controlling the water temperature at 25-30 ℃, the pH value at 6.0-9.0, 3-5 mg/L of dissolved oxygen, and sprinkling photosynthetic bacteria 0.5-1 × 10 for 1-3 times every 7-10 days9CFU/mL, 1.8-2.7 x 10 nitrifying bacteria9CFU/mL, 1-2.2 x 10 denitrifying bacteria9CFU/mL, 33-40 parts of photosynthetic bacteria, 20-23 parts of nitrobacteria and 30-35 parts of denitrifying bacteria;
(3) management of oxygen-increasing machines
At noon or afternoon in a fine day 2: 00-3: 00 starting the machine for 30-60 min, and starting the machine in the next morning of cloudy day for 5: 00-7: 00 starting up the machine for 60-80 min;
(4) fry rearing
The first stage is as follows: the fry fed by the opening is cultured in an incubator to reach 1-3 cm and 8-12 days, and the stocking density is 1500-3000 tails/m2Keeping the water depth to be 1.8m, feeding 35-52 parts of vitamin C, 28-66 parts of rotifers, 32-49 parts of limnodrilus and 21-75 parts of artemia nauplii, wherein the feeding amount of bait is 4-5 times that of the larval fish;
and a second stage: feeding 3-6 cm-long fry for 12-15 days, wherein the stocking density is 1200-1500 tails/m2Keeping the water depth to be 2.0m, and feeding the fish with the feeding mass ratio of 1: 1-4: 3-7 silver carp fries, bighead carp fries and artificial ingredients, wherein the fed bait is 6-8 times of that of the fries, and then the fries are transferred into a culture pond for culture;
and a third stage: feeding the larval fish with the total length of 7-9 cm for 15-22 days, wherein the stocking density is 300-500 tails/m2Keeping the water depth to be 2.5m, feeding fishes, shrimps, fish eggs, snails and artificial ingredients, wherein the mass ratio of the fishes, the shrimps, the fish eggs and the snails in the third stage is 1-5: 3-5: 4-9, feeding bait 8-10 times of the larval fish, wherein the artificial ingredients in the third stage comprise the following raw materials in parts by weight: 38-70 parts of bananas, 21-65 parts of selenium-rich corns and 44-50 parts of white flour25-38 parts of starch, 50-80 parts of selenium-rich bran and 60-100 parts of bread crumbs.
2. The artificial breeding method of acanthopagrus latus according to claim 1, wherein the artificial breeding method comprises the following steps: the third-stage artificial ingredients comprise the following raw materials in parts by weight: 38-70 parts of bananas, 21-65 parts of selenium-rich and selenium-rich corns, 44-50 parts of white flour, 25-38 parts of starch, 50-80 parts of selenium-rich and selenium-rich bran and 60-100 parts of bread crumbs.
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| CN105558263A (en) * | 2014-10-11 | 2016-05-11 | 恩施土家族苗族自治州农业科学院 | Fish feed |
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| CN107593529A (en) * | 2017-09-22 | 2018-01-19 | 黔东南苗族侗族自治州农业科学院 | Photosynthetic bacteria improvement pond water environment supports carp technology |
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