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河蟹是变温动物,体温随水温的变化而变化,一般与水温只相差0.1℃左右。因此,养蟹应控制好水温。根据水产专家研究的结果,当水温急剧变化时,河蟹会产生应激反应,容易发生疾病。例如,当水温突变时,河蟹肌肉松弛,附肢关节变软,运动无力,甚至肌肉坏死;当加注新水时,如温差超过3℃,?
Crab is a warm-blooded animal, body temperature changes with changes in water temperature, the general difference with the water temperature of only about 0.1 ℃. Therefore, crabs should control the water temperature. According to the results of aquatic experts study, when the water temperature changes drastically, crabs will produce stress response, prone to disease. For example, when the water temperature suddenly changes, the crab muscle relaxation, appendage joint softening, exercise weakness, and even muscle necrosis; when the new water, such as the temperature difference of more than 3 ℃ ,?