Comprehensive stress-resistant flounder screening method

A screening method, the technology of flounder flounder, which is applied in the field of healthy aquatic breeding and breeding, can solve the problems of seed resource decline, water environment deterioration, and backward breeding theory, etc., and achieve strong overall stress resistance, reduce the number of fish, and be practical strong effect

Active Publication Date: 2018-01-12
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the backwardness of aquaculture management and breeding theory in our country, the water environment has deteriorated, seed resources have declined, and diseases have frequently occurred

Method used

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  • Comprehensive stress-resistant flounder screening method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] S1. Prepare the breeding system:

[0036] Disinfect and soak the breeding system in the prior art with bleaching powder disinfectant with 30ppm residual chlorine for 1 day, rinse with fresh water 3 times, and inject natural seawater with a salinity of 30‰; the circulating water system also needs to add 0.02g / L yeast Cream and 0.2ml / L nitrifying bacteria, run the circulating water system for at least 15 days, and cultivate the biofilm in the filter tank.

[0037] S2. Monitor the breeding environment and check whether it meets the preset environmental indicators:

[0038]The water temperature in the breeding system is 18-20°C; the light time should be 12 hours (7:00-19:00), and the dark time should be 12 hours (19:00-7:00 the next day); the pH value is 7.5, and the dissolved The oxygen concentration is 6.8mg / L, the ammonia nitrogen concentration is 0.1mg / L, the nitrite nitrogen concentration is 0.1mg / L, and the sulfide concentration is 0.1mg / L.

[0039] S3, after passin...

Embodiment 2

[0043] S1. Prepare the breeding system:

[0044] Disinfect and soak the breeding system in the prior art with bleaching powder disinfectant with 30ppm residual chlorine for 1 day, rinse with fresh water for 3 times, and inject natural seawater with a salinity of 30‰; 0.02g / L yeast needs to be added to the circulating water system Cream and 0.2ml / L nitrifying bacteria, run the circulating water system for at least 15 days, and cultivate the biofilm in the filter tank.

[0045] S2. Monitor the breeding environment and check whether it meets the preset environmental indicators:

[0046] The water temperature in the breeding system is 16-25°C; the light time should be 12 hours (7:00-19:00), and the dark time should be 12 hours (19:00-7:00 the next day); the pH value is 7.5, and the dissolved The oxygen concentration is 6.8mg / L, the ammonia nitrogen concentration is 0.1mg / L, the nitrite nitrogen concentration is 0.1mg / L, and the sulfide concentration is 0.1mg / L.

[0047] S3. Afte...

Embodiment 3

[0053] S1. Prepare the breeding system:

[0054] Disinfect and soak the breeding system in the prior art with bleaching powder disinfectant with 30ppm residual chlorine for 1 day, rinse with fresh water for 3 times, and inject natural seawater with a salinity of 30‰; 0.02g / L yeast needs to be added to the circulating water system Cream and 0.2ml / L nitrifying bacteria, run the circulating water system for at least 15 days, and cultivate the biofilm in the filter tank.

[0055] S2. Monitor the breeding environment and check whether it meets the preset environmental indicators:

[0056] The water temperature in the culture system is 17-20°C; the light time should be 12 hours (7:00-19:00), and the dark time should be 12 hours (19:00-7:00 the next day); the pH value is 7.5, and the dissolved The oxygen concentration is 6.8mg / L, the ammonia nitrogen concentration is 0.1mg / L, the nitrite nitrogen concentration is 0.1mg / L, and the sulfide concentration is 0.1mg / L.

[0057] S3. After...

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Abstract

The invention discloses a comprehensive stress-resistant flounder screening method. The method comprises culture system preparation and comprises the steps of detecting a culture environment, and checking whether or not the environment accords with a pre-set environment index; after the environment is checked to be qualified, placing juvenile fishes and adult fishes for breeding into the culture system; utilizing a fishing net capturing method to regularly screen the juvenile fishes for culture; utilizing a fishing net capturing and limiting method to screen the adult fishes for breeding for the first time; then conducting further feeding behavior screening; selecting fishes with a high condition factor in screened lively and healthy parent fishes as parent fishes for breeding. According to the comprehensive stress-resistant flounder screening method, by utilizing the stress physiological property of flounders for capturing, fishing net limiting and bait throwing and the theory that appetite recovery is closely related to disease infection stress after stress and by adopting the method of repeated screening and weeding out weak individuals, stress-resistant flounder individuals with strong appetite are screened from common flounder fry and the parent fishes for breeding group, the flounder fry and the parent fishes for breeding group keep healthy, and the culture yield and thesurvival rate of offspring are increased.

Description

technical field [0001] The invention relates to a method for healthy aquatic breeding and breeding, in particular to a screening method for comprehensive stress-resistant flatfish. Background technique [0002] In recent years, my country's aquaculture industry has developed rapidly, and the aquaculture production currently accounts for more than 70% of the global aquaculture production. However, due to the backwardness of aquaculture management and breeding theory in our country, the water environment has deteriorated, seed resources have declined, and diseases have occurred frequently. In the normal breeding process of flounder and flounder, it is inevitable to encounter various environmental changes and artificial stress. The "weak or sub-healthy" individuals in the breeding group will appear anorexia and get sick first, and infect the whole group, causing massive disaster. Therefore, before breeding, strong and weak individuals are sorted, and then breeding can avoid t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/95
Inventor 吕为群袁明哲鲁皮亚·伊曼纽·约瑟夫邹华锋陈阿琴许金玲晋颖颖元辉明刘曾宇柏显首竹个个徐心怡
Owner SHANGHAI OCEAN UNIV
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