Aquaculture verification programs are designed to demonstrate and test research‐based recommendations on commercial‐scale operations. From 2010 to 2013, three management protocols were followed on two Channel Catfish Ictalurus punctatus farms in western Alabama. They were an owner‐defined multiple‐batch (MB) system, an Alabama Cooperative Extension System (hereafter, “Extension”)‐defined single‐batch (SB) system, and an Extension‐defined MB system. Three ponds on each farm accommodated the three treatment systems. Data were collected for two completed SB cycles per farm and the two continuous MB systems over the 37‐month period on each farm. The data were combined from the two farms by management system, and averages were calculated for the following production parameters: production period, stocking, water quality, harvest, size distribution, survival, and feed conversion ratio (FCR). Enterprise budgets were developed for each management approach and compared. The feed conversion ratio was found to be the most efficient for the Extension‐defined SB (1.91), followed by the Extension‐defined MB system (2.46) and the owner‐defined MB system (2.63). While the owner‐defined MB system had the greater harvest weight, it also had the longest production period, greatest weigh‐back pounds, and least efficient FCR, resulting in a net return above all costs ($334/acre yearly) below that of the Extension‐defined SB ($553/acre yearly) and MB ($393/acre yearly) systems. This converse finding is due to the owner‐defined MB having higher costs for feed, harvest and transport, diesel, and interest on operating costs. The Extension‐defined SB and MB systems recommended feeding 90% of a weekly determined satiation‐feeding amount, resulting in reduced overall feeding, without diminishing fish growth, and a more efficient FCR. The results from this study showed that all three systems were profitable, with the net return from the Extension‐defined SB system being higher than that from the Extension‐ and owner‐defined MB systems ($160 and $219/acre yearly, respectively). Yield verification programs provide detailed production and economic knowledge of farm management system effects.

中文翻译：

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阿拉巴马州西部两条Channel鱼养殖场单批和多批生产实践的研究验证

水产养殖验证计划旨在展示和测试基于商业规模运营的基于研究的建议。从2010年到2013年，对两条海Cat鱼Ictalurus punctatus采取了三项管理措施阿拉巴马州西部的农场。它们是所有者定义的多批处理（MB）系统，阿拉巴马州协作扩展系统（以下称为“扩展”）定义的单批处理（SB）系统以及扩展定义的MB系统。每个农场的三个池塘容纳了三种处理系统。每个农场在两个完整的SB周期中收集了数据，并在每个农场的37个月中收集了两个连续的MB系统。通过管理系统将来自两个农场的数据进行合并，并计算以下生产参数的平均值：生产期，放养，水质，收割，尺寸分布，存活率和饲料转化率（FCR）。为每种管理方法制定企业预算并进行比较。对于扩展定义的SB（1.91），发现饲料转化率是最有效的，其次是扩展定义的MB系统（2.46）和所有者定义的MB系统（2.63）。尽管所有者定义的MB系统具有更大的收获重量，但它的生产周期最长，磅秤最大，FCR效率最低，导致净收益高于所有成本（每年334美元/英亩），低于净成本。扩展定义的SB（每年$ 553 /英亩）和MB（每年$ 393 /英亩）系统。这种相反的发现是由于所有者定义的甲基溴具有较高的饲料，收割和运输成本，柴油以及运营成本利息。扩展定义的SB和MB系统建议每周饲喂确定的饱食量的90％，从而减少总体饲喂量而又不降低鱼的生长，并提高FCR的效率。这项研究的结果表明，这三个系统都有利可图，而扩展定义的SB系统的净收益要高于扩展定义和所有者定义的MB系统的净收益（分别为每年每英亩160美元和219美元）。产量验证程序可提供有关农场管理系统效果的详细生产和经济知识。