• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aquacultural Engineering: An International Journal >Evaluation of treatment methods using sodium percarbonate and formalin on Australian rainbow trout farms
【24h】

Evaluation of treatment methods using sodium percarbonate and formalin on Australian rainbow trout farms

机译：对澳大利亚虹鳟鱼养殖场使用过碳酸钠和福尔马林的处理方法的评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In aquaculture, effective parasite management often relies on chemical therapy when prevention strategies are ineffective. Fish are often medicated using immersion (bath) treatments. The efficacy of bath treatment relies on maintaining at least the minimum effective dose for the necessary treatment duration. Dose is influenced by the product used, calculation of system volume, application method, flow, mixing, treatment degradation rate and environmental conditions. To maximize efficacy the relationships between system, delivery and effective dose need to be understood or controlled. We tested four application methods using sodium percarbonate (SPC) and two application methods using formalin (FOR, 37% formaldehyde [FA]) in four semi-closed flow-through systems on four Australian freshwater trout farms with different flow and water quality characteristics. Target dose was 64 mg/L SPC and 200 mg/L FOR. Hydrogen peroxide (HP) released from SPC was measured photometrically and FA levels were measured colorimetrically. Each application method achieved consistent doses across repeated applications but not all methods resulted in the dose reaching the target concentration in all parts of the system for the whole treatment duration. Eliminating the influence of system variables by creating static baths provides the most stable treatment environment. Where this is not possible, minimising system variables by modifying flow assists in retaining treatment in the system and improving accuracy of delivered doses. Treatment methods must be validated in a system prior to being routinely applied and mechanisms to optimise dose-duration identified and implemented. (C) 2014 Elsevier B.V. All rights reserved.
机译：在水产养殖中，当预防策略无效时，有效的寄生虫管理通常依靠化学疗法。鱼通常使用浸泡（沐浴）处理来加药。沐浴治疗的有效性取决于在必要的治疗期间至少维持最小有效剂量。剂量受所用产品，系统体积，施用方法，流量，混合，处理降解率和环境条件的影响。为了使功效最大化，需要理解或控制系统，递送和有效剂量之间的关系。我们在四个流量和水质特征不同的澳大利亚淡水鳟鱼养殖场的四个半封闭流通系统中，测试了使用过碳酸钠（SPC）的四种施用方法和使用福尔马林（FOR，37％甲醛[FA]）的两种施用方法。目标剂量为64 mg / L SPC和200 mg / L FOR。用光度法测量从SPC释放的过氧化氢（HP），用比色法测量FA水平。每种施用方法在重复施用中均达到一致的剂量，但并非所有方法均导致整个治疗期间剂量在系统所有部分达到目标浓度。通过创建静态浴消除系统变量的影响，可提供最稳定的处理环境。在无法做到这一点的地方，通过修改流量来最小化系统变量有助于将治疗保留在系统中并提高给药剂量的准确性。在常规应用之前，必须先在系统中验证治疗方法，然后确定和实施优化剂量持续时间的机制。 （C）2014 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号