Sturgeon farming requires special attention. In addition to a relatively long rearing, climate change has resulted in increasingly high temperatures favorable to the emergence of pathogens. The control of water quality is essential especially the first years of life of the fish to prevent a mimivirus (AcIV-E) and a mycobacterium (Mycobacterium liflandii). These crises can lead to significant mortality (up to 70%) and have only been documented in hatchery populations where mortality can reach as high as 100 %. Mycobacterium liflandii, fatally affects young generations of Siberian sturgeon (Acipenser baerii) mainly in year N + 1 with mortalities reaching 30 % when river temperatures rise above 21 °C (summer period). The retention of these pathogenic microorganisms and of total flora by ultrafiltration was evaluated at a semi-industrial scale. The first part focuses on the specific removal of mimivirus, total flora and mycobacteria and the second part aims to evaluate over the long term (5 months) the hydraulic performances of the ultrafiltration process. Although the temperature (maximum 21 °C) was not sufficient for the mycobacteria to be detected, a good retention of mimiviruses (up to 4.7 log removal) and total flora was observed throughout the study. A more stable water quality was obtained after ultrafiltration and this work confirms the potential great interest of ultrafiltration for the biosecurity of fish production.

鲟鱼养殖需要特别注意。除了相对较长的饲养时间外，气候变化还导致气温越来越高，有利于病原体的出现。水质控制对于预防拟菌病毒 (AcIV-E) 和分枝杆菌 (利福兰分枝杆菌)至关重要，尤其是在鱼生命的最初几年。这些危机可能导致显着的死亡率（高达 70%），并且仅在孵化场种群中记录到死亡率高达 100%。利夫兰分枝杆菌，对西伯利亚鲟（Acipenser baerii）的幼代产生致命影响）主要发生在 N+1 年，当河流温度升至 21 °C 以上（夏季）时，死亡率达到 30%。在半工业规模上评估了超滤对这些病原微生物和总菌群的保留。第一部分重点关注拟菌病毒、总菌群和分枝杆菌的具体去除，第二部分旨在评估超滤过程的长期（5 个月）水力性能。尽管温度（最高 21 °C）不足以检测到分枝杆菌，但在整个研究过程中观察到拟菌病毒的良好保留（去除率高达 4.7 log）和总菌群。超滤后获得了更稳定的水质，这项工作证实了超滤对鱼类生产生物安全的潜在巨大兴趣。