Effect of Reused Water on Brown Trout
- 1 April 1986
- journal article
- research article
- Published by American Fisheries Society in The Progressive Fish-Culturist
- Vol. 48 (2), 139-141
- https://doi.org/10.1577/1548-8640(1986)48<139:eorwob>2.0.co;2
Abstract
Brown trout fingerlings (Salmo trutta) were reared for 141 d in water that passed successively through a series of seven troughs. Fish loading per trough was based on a flow index of 36.4, thus the cumulative index was 254.8 at the seventh water use. Two indicators of water quality were measured after each water use; average dissolved oxygen concentration decreased from 7.6 mg/L after the first water use to 3.6 mg/L after the seventh use, and average total ammonia concentration increased from 0.1 mg/L to about 0.9 mg/L. Growth rate began to decline at the fourth water use, when dissolved oxygen averaged 4.8 mg/L and total ammonia averaged 0.6 mg/L.This publication has 2 references indexed in Scilit:
- The effect of ammonia exposure on gill structure of the rainbow trout (Salmo gairdneri)Journal of Fish Biology, 1976
- A Feeding Guide for Brook, Brown, and Rainbow TroutThe Progressive Fish-Culturist, 1967