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Method for rearing juvenile fishes of pampus argenteus

A breeding method and juvenile fish technology, which are applied in the breeding field of silver pomfret juveniles, can solve the problems of infection, death, decreased immunity, etc., and achieve the effects of alleviating strong stress response, reducing the risk of death, and improving the survival rate.

Inactive Publication Date: 2018-02-02
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a method for cultivating silver pomfret juveniles to solve the technical problem that the silver pomfret juveniles suffer from external mechanical damage resulting in decreased immunity or even death due to disease

Method used

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  • Method for rearing juvenile fishes of pampus argenteus
  • Method for rearing juvenile fishes of pampus argenteus
  • Method for rearing juvenile fishes of pampus argenteus

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1: Determination of effective anesthetic concentration of ethyl m-aminobenzoate mesylate

[0030] (1) Classification of specifications: After 24 hours of starvation treatment for juvenile silver pomfret in the culture system, use a net sterilized with 30 ppm potassium permanganate solution to gently fish out juvenile silver pomfret and weigh them. Pomfret juveniles are put into 400L seawater and have been sterilized with 30ppm potassium permanganate in a round culture tank (the volume of the culture tank is 500L), so that the breeding density of silver pomfret juveniles in the culture tank is 48 fish / m 3 . The size of silver pomfret juveniles in the culture system is different, and there is a close relationship between the size of the fish and the concentration of anesthesia. Therefore, it is necessary to classify the size of silver pomfret juveniles.

[0031] (2) Preparation of MS-222 solution: Before anesthesia, add MS-222 into a round bucket with 10L seaw...

Embodiment 2

[0040] Embodiment 2: Determination of safe anesthesia time of ethyl m-aminobenzoate mesylate

[0041](1) Classification of specifications: After 24 hours of starvation treatment for juvenile silver pomfret in the culture system, use a net sterilized with 30 ppm potassium permanganate solution to gently fish out juvenile silver pomfret and weigh them. Pomfret juveniles are put into 400L seawater and have been sterilized with 30ppm potassium permanganate in a round culture tank (the volume of the culture tank is 500L), so that the breeding density of silver pomfret juveniles in the culture tank is 48 fish / m 3 .

[0042] (2) Preparation of MS-222 solution: before anesthesia, add MS-222 into a bucket containing 20 L of seawater, stir evenly, and the final concentration of MS-222 is 75 mg / L.

[0043] (3) Determination of safe anesthesia time: excessive anesthesia can lead to death from anesthesia, so it is necessary to know the safe anesthesia time. Put the silver pomfret juvenil...

Embodiment 3

[0047] Embodiment 3: the application of cultivation method of the present invention in sub-pond

[0048] The average body weight determined according to Example 1 and Example 2 is the silver pomfret juveniles of 12g, the minimum effective anesthetic concentration and the longest safe anesthesia time of its MS-222 are respectively 75mg / L and 10min, and it is applied to the silver pomfret juveniles. In the sub-pool of fish. The weight of 6-month-old silver pomfret juveniles is about 20g. With the increase of fish body weight, the tolerance to anesthetics is enhanced. Therefore, the silver pomfret juveniles were starved for 24 hours, then drained, and when the water level reached 200L, the drainage was stopped, and 3g / L MS-222 mother solution prepared with seawater was added to a final concentration of 75mg / L. After the silver pomfret entered deep anesthesia , within 15 minutes to complete the sub-pond work, and add water to the normal breeding water level of silver pomfret juve...

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Abstract

The invention discloses a method for rearing juvenile fishes of pampus argenteus. The method comprises the following steps of 1, specification classification, wherein after starving treatment is conducted on the juvenile fishes of pampus argenteus in a rearing system for 24 hours, the juvenile fishes are fished out through a sterilized fishing net and weighed, and the juvenile fishes of pampus argenteus with the weight of 10-15 g are put into a sterilized rearing barrel for an experiment; 2, temporary rearing, wherein the classified juvenile fishes of pampus argenteus are temporarily reared for 10-14 days for physical recovery; 3, rearing, wherein the juvenile fishes of pampus argenteus are starved for 24 hours, drainage is conducted, tricaine methanesulfonate prepared by seawater is added, after the juvenile fishes of pampus argenteus are subjected to deep anesthesia, a medicated bath continues for 0-10 minutes, and seawater is added till the original seawater volume in the step 1 isreached. By means of the method, the strong stress reaction of the juvenile fishes of pampus argenteus in normal operation can be relieved, the survival rate of the juvenile fishes of pampus argenteusis increased, operation such as water replacement, pool separation and fishing in the rearing process of the juvenile fishes of pampus argenteus can be conducted successfully, the exposure time of fish bodies in air is shortened, the death risk of the fishes is reduced, and the development of artificial rearing and fry raising work is facilitated.

Description

technical field [0001] The invention belongs to the technical field of silver pomfret culture management, and in particular relates to a method for breeding silver pomfret juveniles. Background technique [0002] Silver Pomfret (Pampus argenteus) belongs to Perciformes (Perciformes), Pomfretaceae (Stromateidae), and Pomfret (Pampus). It also accounts for a large proportion of the economy. In the past 20 years, due to overfishing and environmental pollution, wild silver pomfret resources have been shrinking. Therefore, it is particularly important to carry out artificial breeding and breeding of silver pomfret. However, because silver pomfret juveniles are highly stressed by external disturbances, operations such as water change, pool separation and fishing in artificial breeding management can easily cause mechanical damage to the fish body, which eventually leads to a decline in the immunity of the juvenile fish or infection of other diseases. Death, which makes the artif...

Claims

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Application Information

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IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 周楠楠王亚军余娜胡佳宝匡思雯曹小欢张曼郑俊勇陶顺顺徐芳君
Owner NINGBO UNIV
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