Open AccessBiological Feasibility and Costs of Production of Large Channel Catfish, Ictalurus punctatus , for a Specialty Product Market
Author(s) -
Engle Carole R.,
Kumar Ganesh
Publication year - 2011
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.2011.00515.x
Subject(s) - ictalurus , catfish , biology , market size , zoology , fish <actinopterygii> , fishery , production cost , production (economics) , toxicology , business , economics , commerce , engineering , mechanical engineering , macroeconomics
Restaurant patrons, particularly in upscale locations, increasingly prefer entrées developed from portions cut from fillets larger than those currently sold by the US catfish, Ictalurus punctatus , industry. A production study evaluated the feasibility of producing the necessary size (1.6 kg) of catfish. Twelve 0.1‐ha earthen ponds were stocked with 0.363‐kg channel catfish at 2500 (low); 5000 (medium); or 7500 (high) fish/ha, with four replicates. Mean individual weight at harvest exceeded the mean target weight (1.6 kg) at the two lower densities, and the minimum target weight (1.36 kg) at the highest density. Percentages of fish (by weight) that did not meet the minimum weight required were: 1, 5, and 18%, in the low, medium, and high density treatments, respectively. Yields were significantly greater at higher densities ( P < 0.05). Costs of production at the two higher densities were 4 to 7% higher than in the traditional multiple‐batch system, but increased to 51% at the lowest density. Results demonstrated the biological feasibility of producing channel catfish of a mean weight of 1.6 kg. Economic feasibility depends on (1) the price premium paid and (2) development of a market for fish sizes between current acceptable maximum sizes accepted and 1.36 kg.