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Differences in swimming performance among strains of rainbow trout salmo gairdneri


, : Differences in swimming performance among strains of rainbow trout salmo gairdneri. Journal of the Fisheries Research Board of Canada 34(2): 304-307

Swimming performance profiles, relating fish size to swimming time, were established for 3 strains of rainbow trout (S. gairdneri). Differences were found only in level at each size of fish, not in slope of regressions. Swimming performances of New Zealand and Sand Creek strains did not differ, but were superior to the Manchester strain. In stamina results from 189 day old fish from individual matings of 7 strains and various crosses, similar strains and crosses had closely matching profiles whereas profiles of unrelated groups were variable. Comparison of slowest, average and fastest growing fish within the New Zealand strain showed that swimming ability was not related to growth rate.

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Accession: 005151026

DOI: 10.1139/f77-048

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