The Influence of Dissolved Oxygen on the Growth of Channel Catfish
- 1 October 1973
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 102 (4) , 835-838
- https://doi.org/10.1577/1548-8659(1973)102<835:tiodoo>2.0.co;2
Abstract
The long‐term effects of three levels of dissolved oxygen (100, 60 and 36% of air saturation) on channel catfish, Ictalurus punctatus, were evaluated under two feeding regimes—a constant rate of 3% of biomass daily and ad libitum. At ad libitum rates (6‐week duration) average gains of 159, 124, and 65 g per fish were obtained in tanks containing oxygen at 100, 60 and 36% of saturation, respectively. In both experiments food consumption and efficiency were drastically reduced at 36% oxygen saturation. Survival rates were 100% in all groups, thus suggesting that disease and parasite problems were not enhanced by a hypoxic environment. In these studies catfish did not demonstrate a polycythemic response to hypoxic conditions.This publication has 0 references indexed in Scilit: