Premium
Full and Partial Overhead Tank Cover Improves Rainbow Trout Rearing Performance
Author(s) -
Walker Lily M.,
Parker Timothy M.,
Barnes Michael E.
Publication year - 2016
Publication title -
north american journal of aquaculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.432
H-Index - 41
eISSN - 1548-8454
pISSN - 1522-2055
DOI - 10.1080/15222055.2015.1090504
Subject(s) - rainbow trout , biology , hatchery , fishery , cover (algebra) , overhead (engineering) , zoology , fish <actinopterygii> , engineering , mechanical engineering , electrical engineering
This study examined the effects of different overhead tank cover regimes during rearing of Rainbow Trout Onchorynchus mykiss . Three different overhead cover treatments were applied to circular tanks: near‐full (98%), partial (65%), and no cover. Compared with tanks with no overhead cover, fish growth and feed conversion ratio were significantly improved in tanks with either partial cover or near‐full cover. There were no significant differences in condition factor, visceral somatic index, hepatosomatic index, or hematocrit values in fish reared under either of the cover treatments. These results indicate that either partial or near‐full covers may provide benefits during hatchery production of Rainbow Trout.