Rainbow Trout (Salmo Gairdneri) Cage Culture and Primary Production In Eastern South Dakota Dugout Ponds

Rainbow trout (Salmo gairdneri) reared in 1 m³ cages in a South Dakota dugout pond grew and survived as well or better than most cage-cultured rainbow trout reported in the literature. Significant differences (P≤0.01) in mean length, weight, and food conversion, and similarity in relative weight between trout fed 2 and 4% of body weight daily, indicated that the optimum feeding rate was near 3% for this size range (35=100g). Daily rations based on fish size and water temperature need to be developed for trout reared in a lentic environment. The high cost of fingerlings was the limiting factor in a hypothetical dugout culture operation. Great water transparency seemed to be the major factor contributing to increased primary production, phytoplankton standing crop, and diel dissolved oxygen levels in comparisons between two unstocked dugout ponds. Suspension of sediments by wind actions may have been greater in the older pond because it was 18% larger in surface area but only 66% as deep as the never pond.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis - Open Access

Discipline thesis:degree_discipline

Wildlife and Fisheries Science

Year

1983

Author dc:creator

• Roell, Michael John

Contributors dc:contributor

• Charles G. Scalet

• Natural Resources and Conservation

Statement dc:rights

• <p>No Copyright - Non-Commercial Use Only<br /><a href="http://rightsstatements.org/vocab/InC-EDU/1.0/">http://rightsstatements.org/vocab/NoC-NC/1.0/</a></p>

Language dc:language

en

Repository record dc:identifier

https://openprairie.sdstate.edu/etd/207

OAI identifier oai:identifier

oai:openprairie.sdstate.edu:etd-1207