斜带石斑鱼生态优化与病害防控育苗模式的研究

Studies on new breeding model of ecological optimization and disease control and prevention in Epinephlus coioides

本文报道了斜带石斑鱼生态优化与病害防控育苗模式的研究,研究重点为如何预防神经坏死病毒(NNV)的感染,包括:1、阻断病毒的传播途径,选择不带病毒的受精卵,并在布卵前,对育苗池、用具以及生物饵料进行严格消毒。2、保持育苗池水小生态相对稳定,使水体中益生菌成为优势种群,消耗水体氨氮等有害物质,同时抑制水体里有害细菌的繁殖。3、进一步规范仔、稚、幼鱼期的饵料系列及其配制,保证鱼苗的营养以提高鱼苗的活力和健康水平,提高其抵抗病毒病侵袭的能力,从而提高鱼苗的成活率。

The study on new breeding model of ecological optimization and disease control and prevention in Epinephlus coioides has been reported in this article. The research mainly focuses on prevention of nervous necrosis virus （NNV） and so on. These researches include ： Firstly, blocking the spread pathways of the vi-rus, such as choosing fertilized eggs carrying no virus, furthermore disinfecting strictly and completely nurser- y ponds, tools, biological feed and also fertilized eggs before the eggs entering nursery ponds. Secondly, the microecological environment of seedling pools should remain relatively steady and make probiotics become dominant species in the water to consume harmful substances like ammonia nitrogen and so on, and also to control the reproduction of malignant bacteria. Thirdly, it is important to maintain nutrition of the fish fry to improve its physical and health level, to enhance its ability of resisting virus disease, and thus to increase the survival rate of larvae, that more mature and standardized type and proportion of fish bait for the larvae, fry or juvenile have been putted into effect.