A pond production trial was conducted to evaluate the economics of raising Channel Catfish Ictalurus punctatus in intensively aerated ponds operated under the single‐batch cropping system. Channel Catfish fingerlings averaging 0.09 lb were stocked at 6,000, 8,000, 10,000, and 12,000 fish/acre with six replicate ponds (1 acre) per treatment. A treatment of hybrid catfish (♀ Channel Catfish × ♂ Blue Catfish I. furcatus) fingerlings stocked into five replicate ponds at 12,000 fish/acre was concurrently evaluated to compare the economic performance of hybrids and that of Channel Catfish. All ponds were provided with a fixed‐paddlewheel aerator (10 hp/acre) and were fed once daily to apparent satiation for 206 d. For Channel Catfish, the gross yield ranged from 6,562 to 9,039 lb/acre, showing nominally linear trends of increasing yield with stocking density. However, the same trend was not seen in the relationship between costs and stocking density: the highest breakeven price (US$1.07/lb) was associated with the lowest density treatment (6,000 fish/acre), and the least cost ($0.96/lb) was associated with the intermediate density of 8,000 fish/acre. Average annual net cash flows from all Channel Catfish treatments were insufficient to make the investment in intensive aeration profitable in the long run (10 years). The hybrid catfish treatment (12,000 fish/acre) outperformed all Channel Catfish treatments in terms of yield (17,542 lb/acre), which offset some of the fixed costs associated with intensively aerated ponds and resulted in a lower cost of production ($0.85/lb) and better long‐term returns (17%). This study indicated that Channel Catfish do not perform well—either biologically or economically—at densities greater than 8,000 fish/acre in single‐batch, intensively aerated ponds. The study reflects current industry trends, where integrated farms (farms with their own processing plants) with yield‐maximizing business objectives prefer raising hybrid catfish in single‐batch systems, while nonintegrated farms prefer raising Channel Catfish in multiple‐batch systems.

中文翻译：

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单批次，加气池中nd鱼和杂交Cat鱼的性能

的水池生产试验，以评价提高斑点叉尾鮰的经济斑点叉尾鮰在单批次熟制下工作深入曝气池。以每英亩6,000、8,000、10,000和12,000的鱼/英亩放养平均为0.09磅的海Cat鱼鱼种，每个处理有6个重复池塘（1英亩）。杂交cat鱼的处理（♀通道Cat鱼×♂蓝色Cat鱼I. furcatus同时评估了以12,000条鱼/英亩放养在五个重复池塘中的鱼种，以比较杂交鱼和and鱼的经济表现。所有池塘都配备有固定的桨叶曝气机（10 hp /英亩），每天喂一次，直至表观饱足206 d。Channel鱼的总产量在6,562至9,039磅/英亩之间，显示出随着种群密度增加而名义上呈线性增长趋势。但是，在成本与放养密度之间的关系中未看到相同的趋势：盈亏平衡价格最高（1.07美元/磅）与最低密度处理（6,000条鱼/英亩）和最低成本（0.96美元/磅）相关。中间密度为8,000鱼/英亩。从所有Channel鱼处理中获得的平均年净现金流量不足以使长期（10年）的密集曝气投资获利。就产量（17,542磅/英亩）而言，杂交cat鱼处理（12,000条鱼/英亩）优于所有海峡Channel鱼处理，这抵消了与密集充气池塘相关的部分固定成本，并降低了生产成本（0.85美元/磅） ）和更好的长期回报（17％）。这项研究表明，Channel鱼在单充气密集曝气池中的密度大于8,000英亩/英亩时，无论从生物学上还是经济上都表现不佳。这项研究反映了当前的行业趋势，在这种情况下，具有最大产量目标的综合农场（拥有自己的加工厂的农场）更喜欢在单批系统中饲养杂交cat鱼，