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首页> 外文期刊>North American Journal of Aquaculture >Evaluation of formalin and hydrogen peroxide treatment regimes on rainbow trout eyed eggs.
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Evaluation of formalin and hydrogen peroxide treatment regimes on rainbow trout eyed eggs.

机译：虹鳟鱼卵对福尔马林和过氧化氢的处理方式的评估。

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This study examined the use of antifungal chemicals at nonstandard treatment concentrations or treatment intervals during the incubation of eyed eggs of rainbow trout Oncorhynchus mykiss until hatch in vertically stacked incubation trays. Daily chemical treatments of 500, 1,000, and 1,667 mg of commercial formalin (containing 37% formaldehyde)/L for 15 min and a nonchemical, dead-egg-removal control were included in three trials. The second and third trials added a true control (no antifungal measures) and the third trial also incorporated a treatment of formalin at 1,667 mg/L for 15 min every other day. In these three trials, formalin at 1,000 or 1,667 mg/L daily or 1,667 mg/L every other day significantly improved egg survival to hatch relative to the other treatments and completely controlled fungal growth. A fourth trial evaluated treatments of formalin at 750 mg/L for 15 min daily or every other day, hydrogen peroxide at 500 mg/L for 15 min daily or every other day, and control groups for both treatments. Egg survival to hatch was significantly different among the treatments; the daily 750-mg/L formalin treatment produced the greatest number of hatched fry, followed by the treatment with 750 mg/L formalin every other day, the dead-egg-removal control, and daily hydrogen peroxide treatment. Survival in the every-other-day hydrogen peroxide treatment and the true control could only be estimated because of extreme fungal growth, and was substantially less than the other treatments. Only daily 750 mg/L formalin treatments and dead egg removal completely controlled fungal growth. To adequately control fungus and maximize egg survival, either daily 15-min treatments of formalin at concentrations of at least 750 mg/L or every-other-day treatments of formalin at 1,667 mg/L are recommended.
机译：这项研究检查了在虹鳟鱼（Oncorhynchus mykiss）的有眼卵孵化直到在垂直堆叠的孵化盘中孵化期间，在非标准处理浓度或处理间隔下使用抗真菌化学品的情况。三项试验包括每日化学处理500、1,000和1,667 mg商业福尔马林（含37％甲醛）/ L，持续15分钟，以及非化学去除死卵的对照。第二和第三次试验增加了真正的对照（无抗真菌措施），第三次试验还每隔一天加入1667 mg / L福尔马林治疗15分钟。在这三项试验中，相对于其他处理方法，福尔马林每天1000或1,667 mg / L或隔天1,667 mg / L可以显着提高卵的孵化率并完全控制真菌的生长。第四项试验评估了每天或每隔一天以750 mg / L的福尔马林治疗，每天或每隔一天以500 mg / L的过氧化氢治疗，每天或每隔15min的治疗，以及对照组。卵的孵化率在不同处理之间存在显着差异。每天750 mg / L的福尔马林处理产生最多的孵化鱼苗，随后每隔一天以750 mg / L的福尔马林处理，去除死卵的控制和每天的过氧化氢处理。每隔一天过氧化氢处理和真正控制下的存活率只能由于极端的真菌生长而估计，并且大大少于其他处理。仅每日750 mg / L福尔马林处理和去除死卵可完全控制真菌的生长。为了充分控制真菌并最大程度地提高卵的存活率，建议每天至少15分钟的福尔马林浓度至少为750 mg / L的治疗或每天两次福尔马林的浓度为1,667 mg / L的治疗。

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