每年的5—9月是鱼类病毒、细菌和寄生虫病的主要流行季节,如控制不当将会引起鱼病暴发。实践证明,在鱼病流行期前和流行期内采取必要的预防措施,可收到事半功倍的效果。预防的主要措施有: 1.食场消毒 食场是鱼类每天吃食的场所,环境好坏直接关系到鱼体的健康,因此要勤除剩渣残饵,定期进行食场消毒。消毒方法有二种:一是食场泼洒漂白粉。用漂白粉250克,溶化于水中泼洒于食场周 May-September each year is the main epidemic season for fish viruses, bacteria and parasites, and if not properly controlled, it can cause outbreaks of fish diseases. Practice has proved that the pre-epidemic of fish disease and popular period to take the necessary precautions, can receive a multiplier effect. The main precautionary measures are as follows: 1. Food court disinfection Food court is a place for fish to eat every day, the environment is directly related to the health of the fish, so diligently remove residual residue bait, regular disinfection of the food court. There are two kinds of disinfection: First, the food spill bleaching powder. With bleach 250 grams, dissolved in water spilled in the food court weeks