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Trout Farming

Carrying Capacity and Inventory Management

Document format: pdf

Publisher: Southern Regional Aquaculture Center

Creation date: July 2000

The carrying capacity of a trout production unit depends on fish size and water quality factors such as oxygen content, temperature, water flow and volume. Most commercial trout farms in the South use rectangular concrete tanks in series, called raceways. Carrying capacity is usually expressed in terms of pounds of fish per unit of water flow (loading rate) or per cubic foot of rearing space (density). A number of different formulas have been devised to calculate carrying capacities, taking into account oxygen consumption, growth rate of fish, feeding rates, water volume and temperature, and other factors. As long as the appropriate limiting factors are monitored, the choice of method for estimating carrying capacity is a matter of operator preference.

Key Words: USDA • SRAC • Trout • Raceway Production • Stocking Density • Inventory Management • Carrying Capacity