Abstract
AbstractLow-intensity production of Channel Catfish Ictalurus punctatus is characterized by low stocking rates, low installed aeration capacity, and no automated dissolved oxygen monitoring. Two studies conducted in nine 0.25-acre ponds quantified production characteristics of stocker Channel Catfish stocked for low-intensity food-fish production in single- or multiple-batch culture. In the multiple-batch study, 0.5-lb stockers (carryover fish) were stocked at 4,500 fish/acre and 0.044-lb fingerlings at 6,000 fish/acre. Stockers were grown to mean individual weights of 1.25, 1.75, or 2.25 lb. In the single-batch study, 0.5-lb stockers were stocked at 3,500, 4,500, and 5,500 fish/acre. All fish were fed a feed containing 32% protein daily to apparent satiation. Ponds were harvested in October and fish were weighed. Growth of carryover fish and understock (fingerlings) in multiple-batch culture was linear and growth-curve slopes did not differ significantly. Carryover fish size-class distributions differed ...
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