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首页> 外文期刊>North American Journal of Aquaculture >Efficacy of Formalin as an Egg Disinfectant for Improving HybridCatfish (Channel Catfish x Blue Catfish) Hatching Success
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Efficacy of Formalin as an Egg Disinfectant for Improving HybridCatfish (Channel Catfish x Blue Catfish) Hatching Success

机译：福尔马林作为卵消毒剂改善杂交C鱼（海Channel鱼x蓝Cat鱼）孵化成功的功效

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摘要

Formalin is currently the only aquaculture drug approved by the U.S. Food and Drug Administration for the control of fungi on the eggs of all finfish. The efficacy of formalin for disinfecting hybrid catfish (channel catfish Ictalurus punctatus x blue catfish I. furcatus) eggs was examined and compared with that of three other potential chemotherapeutants. Two experiments were conducted to evaluate treatment dose and frequency on the hatching success of the hybrid catfish. In the first experiment, hybrid catfish egg masses were divided and assigned to 1 of 13 treatments administered as daily 15-min baths. The treatments were as follows: (1) control (no treatment), (2) 50 ppm (mg/L) formalin (F), (3) 100 ppm F, (4) 200 ppm F, (5) 125 ppm hydrogen peroxide (HP), (6) 250 ppm HP, (7) 500 ppm HP, (8) 50 ppm povidone iodine (PI), (9) 100 ppm PI, (10) 200 ppm PI, (11) 2.5 ppm copper sulfate (CS), (12) 5 ppm CS, and (13) 10 ppm CS. Hatching success tended to be highest among eggs treated with 100 ppm F (87.7%), 2.5 ppm CS (87.0%), or 100 ppm PI (85.2%), although these success rates were not significantly (P > 0.05) different from that in the control treatment (82.8%). Treatment with 500 ppm HP resulted in a significant (P < 0.05) decrease in hatching success (31.5%). In the second experiment, the optimal frequency of formalin treatments was assessed by treating hybrid catfish eggs zero, two, three, or four times daily. Eggs treated three times daily with 100 ppm F had the highest (P < 0.05) percentage of hatched eggs. To maximize hatching success, three daily treatments of hybrid catfish eggs with 100 ppm F as a 15-min bath is recommended.
机译：福尔马林目前是美国食品和药物管理局批准的唯一一种用于控制所有鳍鱼卵上真菌的水产养殖药物。检查了福尔马林对杂交cat鱼（沟channel鱼Ictalurus punctatus x蓝色blue鱼I. furcatus）卵的消毒效果，并将其与其他三种潜在的化学治疗剂进行了比较。进行了两个实验以评估处理剂量和频率对杂交cat鱼孵化成功的影响。在第一个实验中，将杂种cat鱼卵块进行划分，并分配为每天15分钟洗澡的13种处理方法之一。处理方法如下：（1）对照（未处理），（2）50 ppm（mg / L）福尔马林（F），（3）100 ppm F，（4）200 ppm F，（5）125 ppm氢过氧化物（HP），（6）250 ppm HP，（7）500 ppm HP，（8）50 ppm聚维酮碘（PI），（9）100 ppm PI，（10）200 ppm PI，（11）2.5 ppm铜硫酸盐（CS），（12）5 ppm CS和（13）10 ppm CS。在用100 ppm F（87.7％），2.5 ppm CS（87.0％）或100 ppm PI（85.2％）处理的卵中，孵化成功率往往最高，尽管这些成功率与孵化率没有显着差异（P> 0.05）。在对照治疗中（82.8％）。用500 ppm HP的处理导致孵化成功率显着降低（P <0.05）（31.5％）。在第二个实验中，通过每天零次，两次，三次或四次处理杂种fish鱼卵来评估福尔马林处理的最佳频率。每天用100 ppm F处理3次的卵孵化率最高（P <0.05）。为了最大程度地提高孵化成功率，建议每天使用15分钟的浸泡时间，每天用100 ppm F的杂交fish鱼卵进行3次处理。

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