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CN-122004155-A - Indoor cultivation method for improving survival rate of young large-horse mackerel

CN122004155ACN 122004155 ACN122004155 ACN 122004155ACN-122004155-A

Abstract

The invention discloses an indoor cultivation method for improving survival rate of young large-scale horse mackerel, and relates to the technical field of aquaculture. The pretreatment wheel worm, the juniper berry fruit extract and the 2,4' -dihydroxychalcone are added in the early stage and the later stage of the breeding of the young fish, active ingredients such as glucomannan, proline, chlorogenic acid and discolor cinquefoil herb extract are added in the young fish breeding stage, and environmental factors such as illumination and acoustic wave stimulation are regulated and controlled, so that the survival rate of the large horse mackerel and the infection capability of resisting lactococcus garvieae and vibrio anguillarum can be effectively improved, the investment of breeding cost is reduced, and the bait used by the bait is simple and easy to obtain and is simple to prepare.

Inventors

  • CAI CHUNYOU
  • CAI YOUSEN
  • CHEN CHUNXIA
  • Cai sichuan
  • CAI JIANSHUN
  • CAI HUIMING
  • CAI JINQUAN

Assignees

  • 海南晨海水产有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (10)

  1. 1. An indoor cultivation method for improving survival rate of young large-horse mackerel, which is characterized by comprising the following steps: (1) Carrying out still water culture on the larval fish with the age of 1-5 days, and feeding the bait A when the larval fish grows to 3-5 days; the bait A comprises 50-80 parts of pretreatment rotifers and 10-20 parts of oyster fertilized eggs in parts by weight; (2) The post-stage larval fish cultivation, namely, the water flow in a cultivation pond is 15-25L/min, and the larval fish is fed with bait B when the larval fish grows to 6-10 days old, and the larval fish is fed with bait C after green light irradiation is started when the larval fish grows to 11-14 days old; The bait B comprises, by weight, 30-60 parts of pretreatment rotifers and 20-40 parts of oyster fertilized eggs; The bait C comprises, by weight, 20-30 parts of white fish powder, 10-15 parts of krill powder, 10-12 parts of chlorella powder, 2-4 parts of fish oil, 1-3 parts of a juner fruit extract, 0.5-1.0 part of 2,4' -dihydroxychalcone, 1-3 parts of compound vitamins and 1-3 parts of compound minerals; (3) Culturing young fish, namely, when the water flow in a culture pond is 25-30L/min and the young fish grows to 15-35 days old, simultaneously starting green light irradiation and acoustic wave stimulation, and feeding bait D after finishing; The bait D comprises, by weight, 15-25 parts of white fish powder, 8-12 parts of soybean lecithin, 5-8 parts of yeast hydrolysate, 3-6 parts of glucomannan, 3-5 parts of proline, 0.5-1.5 parts of chlorogenic acid, 2-5 parts of discolor cinquefoil herb extract, 1-3 parts of compound vitamins and 1-3 parts of compound minerals.
  2. 2. The indoor cultivation method according to claim 1, wherein the cultivation density of the prophase fish larvae in the step (1) is 900-1200 tails/cubic meter.
  3. 3. The indoor cultivation method according to claim 1, wherein the bait A in the step (1) comprises 60 parts of pretreatment rotifers and 15 parts of oyster fertilized eggs in parts by weight, and is fed for 5-7 times per day, wherein the feeding amount per day is 3-5% of the total weight of the fish body.
  4. 4. The indoor cultivation method according to claim 1, wherein the pretreatment rotifers in the step (1) and the step (2) are obtained by immersing the rotifers in a pretreatment liquid for 5-10 hours, and the pretreatment liquid comprises DHA algae oil emulsifier and grapefruit flower extract mixed according to a volume ratio of 1mL (2-3 mL).
  5. 5. The indoor cultivation method according to claim 1, wherein the cultivation density of the young fish in the middle and later stages in the step (2) is 700-900 tails/cubic meter, the wavelength of the green light in the step (2) and the step (3) is 520-530 nm, the illumination intensity is 500-1000 lx, and the illumination time is 2-5 min.
  6. 6. The indoor cultivation method according to claim 1, wherein the bait B in the step (2) comprises 50 parts of pretreatment rotifers and 30 parts of oyster fertilized eggs in parts by weight, and is fed for 4-5 times per day, wherein the feeding amount per day is 5-8% of the total weight of the fish body.
  7. 7. The indoor cultivation method according to claim 1, wherein the bait C in the step (2) comprises, by weight, 25 parts of white fish meal, 11 parts of krill meal, 11 parts of chlorella powder, 3 parts of fish oil, 2 parts of juniperberry fruit extract, 0.8 part of 2,4' -dihydroxychalcone, 2 parts of compound vitamins and 2 parts of compound minerals, and the bait C is fed for 4-5 times per day, wherein the feeding amount per day is 6-9% of the total weight of the fish body.
  8. 8. The indoor cultivation method according to claim 1, wherein the cultivation density of the young fish in the step (3) is 500-750 fish/cubic meter, the sound wave stimulation time is 2-5 min, and the sound wave frequency is 600-800 Hz.
  9. 9. The indoor cultivation method according to claim 1, wherein the bait D in the step (3) comprises 20 parts of white fish meal, 9 parts of soybean lecithin, 7 parts of yeast hydrolysate, 5 parts of glucomannan, 4 parts of proline, 0.8 part of chlorogenic acid, 3 parts of discolor cinquefoil herb extract, 2 parts of compound vitamins and 2 parts of compound minerals in parts by weight, and is fed for 2-3 times per day, wherein the feeding amount per day is 7-10% of the total weight of the fish body.
  10. 10. The use of the indoor cultivation method according to any one of claims 1 to 9 for increasing the survival rate of horse mackerel and increasing its ability to resist infection by lactococcus garvieae and/or vibrio anguillarum.

Description

Indoor cultivation method for improving survival rate of young large-horse mackerel Technical Field The invention relates to the technical field of aquaculture, in particular to an indoor cultivation method for improving survival rate of young large-scale horse mackerel. Background Carpesium flavum (Pseudocaranx dentex) belonging to the genus Carpesium of the family Carpeidae, the market commonly called large horse mackerel, dactylus glomerus, long onymus, is a typical upper-middle layer teleostoma. The shape of the toy has typical streamline characteristics, such as a flat body shape, a short tail handle and a long tail fin, and is suitable for rapid swimming. The large individual, fast growth, thousands of gram of adult fish of the trachoma flavus, compact meat quality, rich fat, is known as the king of the trachoma, and is an emerging warm water economic breeding fish species in recent years. The prior research is focused on marine fishing resources and deep sea cage culture, such as China patent application No. 202511959318.7, publication date 2026-01-23, and discloses a method for culturing the yellow-banded pseudomackerel in a deep water cage, which adopts a submersible cage to lift according to seasons (surface water temperature), enables the yellow-banded pseudomackerel to be in an optimal growing water layer at 20-25 ℃ all the year round, and adopts a conduit to feed at fixed points, so as to establish a water temperature-feeding amount-allicin-probiotics coupling model. At present, the cultivation research of young fish of the trachinotus marmoreus in the indoor controllable environment is not enough. Disclosure of Invention Aiming at the defects in the prior art, the invention provides an indoor cultivation method for improving the survival rate of young large-scale horse mackerel, so as to solve the problems in the prior art. In order to achieve the above purpose, the present invention provides the following technical solutions: An indoor cultivation method for improving survival rate of young large-horse mackerel, comprising the following steps: (1) Carrying out still water culture on the larval fish with the age of 1-5 days, and feeding the bait A when the larval fish grows to 3-5 days; the bait A comprises 50-80 parts of pretreatment rotifers and 10-20 parts of oyster fertilized eggs in parts by weight; (2) The post-stage larval fish cultivation, namely, the water flow in a cultivation pond is 15-25L/min, and the larval fish is fed with bait B when the larval fish grows to 6-10 days old, and the larval fish is fed with bait C after green light irradiation is started when the larval fish grows to 11-14 days old; The bait B comprises, by weight, 30-60 parts of pretreatment rotifers and 20-40 parts of oyster fertilized eggs; The bait C comprises, by weight, 20-30 parts of white fish powder, 10-15 parts of krill powder, 10-12 parts of chlorella powder, 2-4 parts of fish oil, 1-3 parts of a juner fruit extract, 0.5-1.0 part of 2,4' -dihydroxychalcone, 1-3 parts of compound vitamins and 1-3 parts of compound minerals; (3) Culturing young fish, namely, when the water flow in a culture pond is 25-30L/min and the young fish grows to 15-35 days old, simultaneously starting green light irradiation and acoustic wave stimulation, and feeding bait D after finishing; The bait D comprises, by weight, 15-25 parts of white fish powder, 8-12 parts of soybean lecithin, 5-8 parts of yeast hydrolysate, 3-6 parts of glucomannan, 3-5 parts of proline, 0.5-1.5 parts of chlorogenic acid, 2-5 parts of discolor cinquefoil herb extract, 1-3 parts of compound vitamins and 1-3 parts of compound minerals. Preferably, the whole-course cultivation environment is controlled to be 25-27 ℃ in water temperature, 28-32%o in salinity, dissolved oxygen not less than 6mg/L, pH of 7.8-8.2, ammonia nitrogen of <0.1mg/L and nitrite of <0.05mg/L. Preferably, the cultivation density of the early-stage fries in the step (1) is 900-1200 tails/cubic meter. Preferably, the bait A in the step (1) comprises 60 parts of pretreated rotifers and 15 parts of oyster fertilized eggs in parts by weight, and is fed for 5-7 times per day, wherein the feeding amount per day is 3-5% of the total weight of the fish body. Preferably, the pretreatment of the rotifers in the step (1) and the step (2) is to soak the rotifers in a pretreatment liquid for 5-10 hours, wherein the pretreatment liquid comprises DHA algae oil emulsifier and grapefruit flower extract in a volume ratio of 1mL (2-3 mL). Preferably, the grapefruit flower extracting solution is prepared by weighing and crushing dry grapefruit flowers, adding purified water with the weight of 5-10 times, heating and refluxing at the temperature of 60-80 ℃ for 1-2 hours, filtering to remove residues, and cooling filtrate to room temperature. Preferably, the cultivation density of the post-larval fish in the step (2) is 700-900 tails/cubic meter, the wavelength of the green light in the step (2) and the gre