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虾体变红症

作者:尘风发布:2021-05-21 1:10:50阅读:32,037次

此种疾病病发时受感染螯虾的外壳、腮、附肢等部位会变红、变肮脏,内部组织甚至会发出恶臭。患此病的螯虾对人为操作所造成的压迫(stress)相当敏感,死亡率高达98%,一般认为是由于饲料制造时之不当,而使之含微生物性毒素(microbial toxin)引起的。同时在虾体有病原性细菌之感染,而又经人为之紧迫(stress)致引发起全身性的菌血症,亦可能产生本病症。本病症于母虾最容易发生,因此母虾一进入繁殖缸内,需注意缸内消毒,供应不含毒素之新鲜天然营养食物,配以良好的人工饵料,避免太多人为紧迫因子的产生,皆会有良好的预防效果。

虾体变红症

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