Date of Award:

5-1973

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Natural Resources

Department name when degree awarded

Wildlife Science

Committee

Clair B. Stalnaker

Abstract

Effects of exercise and the relative condition of exercised fish were viii evaluated for two strains of rainbow trout. Circular tanks fitted with a paddle were used to continuously exercise the fish and a stamina tunnel was used to evaluate the condition of exercised trout. Trout were exercised continuously at one fish-length per second and one-half fish length per second. Serum LDH activity in Shephard-of-the-Hills (Missouri) rainbow trout acclimated to 10 C increased two fold during the first four days of exercise. Serum LDH activity returned to control levels by the tenth day of exercise. Serum LDH activity in Shephard-of-the-Hills rainbow trout exercised at one-half length per second did not increase significantly. Serum LDH activity in Fish Lake stock acclimated to 17 C did not increase significantly. Shephard-of-the-Hills and Fish Lake rainbow trout exercised at one length per second were better conditioned to water velocities of two lengths per second than were controls.

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