Method for controlling vibrio number in prawn cultivation system

A culture system and shrimp technology, applied in chemical instruments and methods, fish farming, water/sewage multi-stage treatment, etc., can solve the problems of limited effect of vibrio control and not considered, achieve easy access, improve water quality, The effect of facilitating the promotion of the application

Active Publication Date: 2020-01-10
SOUTH CHINA NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this invention does not take into account the characteristics of biof

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  • Method for controlling vibrio number in prawn cultivation system
  • Method for controlling vibrio number in prawn cultivation system
  • Method for controlling vibrio number in prawn cultivation system

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Embodiment

[0027] A method for controlling the amount of vibrio in a prawn culture system, comprising the steps of:

[0028] (1) with eight 25m 3 In the shrimp pond, one batch of Litopenaeus vannamei shrimp seedlings is marked coarsely, the amount of stocking is 800 fish / square, and the salinity is 10‰. The aeration of the pond water is sufficient when the oxygen is added, and there is no obvious stain on the bottom of the pond. Calculate the amount of feed required for each individual shrimp pond.

[0029] (2) Among them, 4 pools were not added with yeast as a group, and the other 4 pools were added with commercially available qualified high-activity yeast powder once a week at 10.0 g / pool as a group.

[0030] (3) Glucose and glycerol were used as external carbon sources in each group of 2 pools, and the amount of additional carbon sources was calculated according to the C / N mass ratio in the food (ie feed) of 15:1. During the breeding period, the water was not changed, and an appropr...

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Abstract

The invention discloses a method for controlling vibrio number in a prawn cultivation system. The method includes: in the 2-month cultivation period of 3cm juvenile prawns, feeding the prawns with feed, carbon source materials and yeast powder; sieving the cultivation water of a prawn pond with a 35-mesh screen to remove the retained large-particle-size biological flocs with the particle size being larger than 500 micrometers; allowing water obtained after the biological flocs are filtered to flow back into the prawn pond to achieve recycling. The method has the advantages that baker's yeast is added, carbon sources such as glucose are utilized effectively, harmful inorganic nitrogen such as ammonia nitrogen is assimilated, and water quality is improved; the large-particle-size biologicalflocs can be formed favorably, the biological flocs can be removed favorably, and accordingly the vibrio number in the prawn pond can be lowered.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for controlling the quantity of Vibrio in a prawn culture system. Background technique [0002] Vibrio is the most common pathogen in aquaculture. There are many types of pathogenic Vibrio, and their toxicity is strong, which is the most harmful bacterial pathogen in shrimp farming. Vibrio control is a long-term and arduous task in shrimp farming. For a long time, due to the lack of suitable means, antibiotics have been widely used in shrimp farming, which has caused the emergence of highly resistant pathogenic bacteria, and the control of pathogenic Vibrio is more difficult. . [0003] In recent years, probiotics such as Bdellovibrio and lactic acid bacteria have also been used as a means of controlling pathogenic Vibrio. Chinese authorized invention patent CN 105309481B discloses a preparation for controlling the number of Vibrio in water and its preparation a...

Claims

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Application Information

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IPC IPC(8): A01K61/59A01K61/13A23K50/80A23K20/163A23K10/18C02F9/14C02F103/20
CPCA01K61/59A01K61/13A23K50/80A23K20/163A23K10/18C02F1/001C02F3/34C02F2305/06C02F2103/20Y02A40/81
Inventor 廖绍安叶剑敏王安利苗玉涛高方舟相晨曦白红曾嘉颖邱铭
Owner SOUTH CHINA NORMAL UNIVERSITY
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