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经多年门诊观察发现,在水生动物生长期,个体塘口病害初发时间与天气变化密切相关,当气温突然上升或下降3-5℃或以上时,水生动物易发病。分析如下:①当水温急剧变化时(水温随气温变化而变化),水生动物由于是变温动物,冷、热应激反应强,抵抗力下降。②气温的急剧变化,往往伴随着天气的变化,而天气的变化往往影响着水体溶氧量,水生动物又因溶氧问题易引发疾病。
After years of outpatient observation found that in aquatic animal growth period, the individual pond mouth disease onset time is closely related to weather changes, when the temperature suddenly rose or dropped 3-5 ℃ or above, aquatic animals prone to disease. Analysis is as follows: ①When the water temperature changes sharply (water temperature changes with temperature), aquatic animal is a warm-blooded animal, cold and heat stress response, resistance decreased. ② rapid changes in temperature, often accompanied by changes in the weather, and changes in the weather often affect the amount of dissolved oxygen in water, aquatic animals due to dissolved oxygen problems easily lead to disease.