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A kind of method of artificial rearing of pepper seabream with high survival rate and high growth rate

A technology for the survival rate of P. japonica, which is applied in the field of artificial breeding of P. chinensis. It can solve the problems of slow growth of fish fry, weak adaptability to the environment of fish fry, and death, so as to improve the survival rate and growth rate, enhance the adaptability of water body, The effect of improving the survival rate

Active Publication Date: 2021-08-06
HAINAN CHENHAI AQUATIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Peppertail seabream is a subtropical and temperate shallow sea bottom fish, mainly distributed in the Indian Ocean and the western North Pacific Ocean. It is produced in the South my country Sea, the East China Sea and the Yellow Sea, and the South China Sea has a large production. It is another new high-quality economic fish in seawater cage culture in recent years. species, with the characteristics of a wide range of suitable temperature and salt, but in the process of artificial seedling cultivation of P. spp. The artificially raised fish fry of P. chinensis are likely to cause discomfort, resulting in slow growth, weak resistance, and susceptibility to diseases. Especially during the process from newly hatched larvae to growing into juveniles, the fry's environmental adaptability is weak, and the survival rate and The rate of weight gain is low, and even prone to mass death

Method used

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  • A kind of method of artificial rearing of pepper seabream with high survival rate and high growth rate
  • A kind of method of artificial rearing of pepper seabream with high survival rate and high growth rate

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Experimental program
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Effect test

Embodiment 1- 1

[0034] Embodiment 1-a method for artificial seedling cultivation of P. chinensis comprises the following steps:

[0035] (1) Fish egg hatching

[0036] The fertilized eggs that were naturally spawned and fertilized by broodstock were selected, rinsed with sand-filtered seawater, and then placed in an incubator. In the incubator, air stones were placed in slightly aerated still water for incubation. The hatching water temperature was 23°C, salinity 27.4, pH7. 9. The egg laying density is 1 million grains / m 3 , change the water once every 3 hours, and the volume of each water change is half of the volume of the hatching bucket, so as to keep the seawater in the hatching bucket fresh;

[0037] (2) Nursery pool treatment

[0038] Select a cement seedling pond with an area of ​​30 square meters, the top is opaque, and adjust the light intensity with a fluorescent lamp. The light intensity is 1000lx, the water depth is 65cm, and the inside of the pool is provided with an air stone...

Embodiment 2- 1

[0049] Embodiment 2-a method for artificial seedling cultivation of P. chinensis comprises the following steps:

[0050] (1) Fish egg hatching

[0051] The fertilized eggs that were naturally spawned and fertilized by broodstock were selected, rinsed with sand-filtered seawater, and then placed in a hatching bucket. Air stones were placed in the hatching bucket to hatch in slightly aerated still water. The hatching water temperature was 30°C, salinity 28.4, pH 8. 5. The egg laying density is 2 million grains / m 3 , change the water once every 5 hours, and the amount of water changed each time is half of the volume of the hatching bucket, so as to keep the seawater in the hatching bucket fresh;

[0052] (2) Nursery pool treatment

[0053] Select a cement nursery pond with an area of ​​65 square meters, the top is opaque, and adjust the light intensity with a fluorescent lamp. The light intensity is 3000lx, the water depth is 85cm, and the inside of the pond is provided with an...

Embodiment 3- 1

[0064] Embodiment 3-a method for artificial seedling cultivation of P. chinensis, comprises the steps:

[0065] (1) Fish egg hatching

[0066] The fertilized eggs that were naturally spawned and fertilized by broodstock were selected, rinsed with sand-filtered seawater, and then placed in a hatching bucket. Air stones were placed in the hatching bucket to hatch in slightly aerated still water. The hatching water temperature was 26°C, salinity 27.9, pH 8. 3. The egg laying density is 1.5 million grains / m 3 , change the water once every 4 hours, and the amount of water changed each time is half of the volume of the hatch tank, so as to keep the sea water in the hatch tank fresh;

[0067] (2) Nursery pool treatment

[0068] Select a cement nursery pond with an area of ​​45 square meters, the top is opaque, and adjust the light intensity with a fluorescent lamp. The light intensity is 2000lx, the water depth is 70cm, and the inside of the pond is provided with an air stone for o...

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Abstract

The present invention provides a high survival rate, high growth rate artificial seedling raising method of the sea bream, comprising the steps of: (1) hatching fish eggs; (2) selecting a cement seedling pond; (3) transferring newly hatched larvae to a seedling pond During the second week of entering the pool, the water temperature was raised to 25.5-27.5°C, and the seawater was raised to a salinity of 35.5±0.6 at a rate of 0.5-1 salinity / day; after 30 days of age, the water temperature was raised to 27.5-27.5°C At 28.5°C, the seawater rose to a salinity of 40.3±0.5 at a rate of 0.5-1 salinity / day; after 60 days of age, the water temperature recovered to 22-25°C, and the seawater was desalinated to a salinity of 1-1.5 salinity / day 32.5±0.6; (4) Feed the fry 2 to 3 days after entering the pond, and the bait is tilapia fertilized eggs and rotifers; from the second week into the pond, increase the density of rotifers and add Artemia nauplii; 30 After 60 days of age, the bait is larvae of copepods, Artemia and small shrimp seedlings; after 60 days of age, the bait is micro-granule feed and small shrimp seedlings; the artificial seedling raising method of the flower tail pepper sea bream of the present invention can effectively improve the fry. Survival rate and growth rate, so as to achieve large-scale artificial seedlings.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for artificial seedling cultivation of pepper bream with high survival rate and high growth rate. Background technique [0002] Plectorhynchus cinctus belongs to Perciformes, Perchidae, Plectorhynchus genus, commonly known as false Baogong. Peppertail seabream is a subtropical and temperate shallow sea bottom fish, mainly distributed in the Indian Ocean and the western North Pacific Ocean. It is produced in the South my country Sea, the East China Sea and the Yellow Sea, and the South China Sea has a large production. It is another new high-quality economic fish in seawater cage culture in recent years. species, with the characteristics of a wide range of suitable temperature and salt, but in the process of artificial seedling cultivation of P. spp. The artificially raised fish fry of P. chinensis are likely to cause discomfort, resulting in slow growth, weak resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10
CPCA01G33/00A23K10/16A23K10/20A23K10/22A23K50/80A01K61/10A01K61/17Y02A40/80Y02A40/81
Inventor 蔡春有蔡有森黄春仁蔡镇辉蔡四川蔡建顺蔡惠明蔡金泉
Owner HAINAN CHENHAI AQUATIC CO LTD