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预防鱼病,应从鱼体、病原体和环境三方面着手。为此,除鱼种放养前清塘消毒、鱼种消毒外,还应采取下列措施: 1 加强饲养管理 1.1 做好”四定”投饵主要是通过科学地饲养管理来增强鱼体本身的抵抗力。这是预防鱼病的根本。”四定”即定位、定时、定量、定质。但“四定”不是固定不变,而是随着季节、气候、鱼体生长情况而改变。 1.2 适时加注新水这是调节水质和预防夏季鱼类“浮头”的主要措施。根据水质肥度和鱼体生长情况,适当注入新水.以增加氧气.冲淡池水中的有机物质.包括生物代谢的有毒产物,消除或减弱原池水的不利影响。夏季一般5～7天注一次新水.每次提
To prevent fish diseases, we should start with the three aspects of fish body, pathogen and environment. To this end, in addition to species stocking Qingtang disinfection, fish disinfection, it should also take the following measures: 1 to strengthen the feeding and management 1.1 do a good job, “four” feeding mainly through scientific feeding and management to enhance the fish’s own resistance force. This is the fundamental prevention of fish diseases. “Four” that positioning, timing, quantitative, qualitative. However, “set” is not fixed, but with the seasons, climate, fish growth and change. 1.2 Timely filling new water This is to adjust the water quality and prevention of summer fish “floating head” of the main measures. According to the water quality and fat growth and the growth of fish, appropriate injection of fresh water to increase oxygen, dilute the organic matter in the pool water, including bio-metabolized toxic products to eliminate or reduce the negative impact of the original pool of water. Summer 5 to 7 days a note of a new water