Author

Dale B. Allen

Document Type

Thesis - Open Access

Award Date

1986

Degree Name

Master of Science (MS)

Department

Wildlife and Fisheries Science

First Advisor

Charles G. Scalet

Abstract

Methods for cage rearing rainbow trout (Salmo gairdneri) were investigated to assist in the development of a landowner aquaculture program for eastern South Dakota. Rainbow trout when stocked as small fingerlings in the spring did not reach a marketable weight (200 g). The fish did attain a size acceptable to some landowners for personal consumption. Maximum stocking density (fish/m3) was not determined. Densities greater than those used would have been needed to determine the optimum stocking rate. The use of a deeper culture cage (3 m) was justified in this area due to the high water temperatures that were common. Growth and survival of three strains of cage reared rainbow trout were compared in a gravel pit environment. The Hildebrand strain performed significantly better (p<0.01) than the Kamloops and Growth strains for the variables length, weight, survival, and relative weight. An automatic fish feeder and a demand feeder were developed for use in remote locations with cage culture. The automatic feeder treatment produced larger fish than either the demand feeder or hand feeding treatments. Cage culture of rainbow trout in eastern South Dakota is presently not economical in the type of water bodies investigated due to a short growing season imposed by high lethal water temperatures in late June or early July.

Library of Congress Subject Headings

Rainbow trout--Growth
Rainbow trout--Size
Rainbow trout--Feeding and feeds
Fish stocking--South Dakota

Description

Includes bibliographical references (leaves 58-63)

Format

application/pdf

Number of Pages

78

Publisher

South Dakota State University

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