Abstract
Abstract Cost estimates were developed for equipping egg incubation troughs for channel catfish (Ictalurus punctatus) to operate with forced air delivered via air stones or perforated pipe rather than with traditional gear motors and shaft-mounted paddles. Capital and operating costs were compared on a per-trough basis for the three configurations. A partial budget was developed to evaluate conversion from the traditional configuration to each of the forced-air configurations. Although forced-air configurations appear to be less expensive to install and operate, cost estimates suggest that two to four operating seasons may be required to recover the cost of converting an existing motor-and-paddle configuration to forced air.
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