Growth And Feed Consumption Of Young Rainbow Trout (Oncorhynchus Mykiss) Exposed To Different Photoperiods

Date
2003
Authors
Ergün, Sebahattin
Yigit, Murat
Türker, Ali
Contributor
Advisor
Department
Instructor
Depositor
Speaker
Researcher
Consultant
Interviewer
Journal Title
Journal ISSN
Volume Title
Publisher
Israeli Journal of Aquaculture - BAMIGDEH
Volume
Number/Issue
Starting Page
Ending Page
Alternative Title
Abstract
A feeding experiment was carried out in a brackish water (18 ppt) flow-through system to deter- mine the effects of different photoperiods (light hours/dark hours; L/D) on feed intake and growth performance of young rainbow trout (Oncorhynchus mykiss). Duplicate groups of fish (35.32 g avg body wt) were exposed to a natural photoperiod, a long photoperiod (16L/8D) or a continu- ous photoperiod (24L/0D) for 60 days and fed to satiation twice a day. The growth rate, daily feed intake and feeding rate in the natural photoperiod were significantly lower (p<0.05) than in the long and continuous photoperiod groups. Growth was highest in the continuous photoperiod, but did not significantly differ from the long photoperiod. The feed conversion ratio, feed efficiency and gross efficiency in the long and continuous photoperiods were slightly better (about 5-7%) but did not significantly differ (p>0.05) from the natural photoperiod. Survival was not significantly (p>0.05) affected by the treatment. For better growth and a lower food conversion rate, the long photoperiod is recommended for young rainbow trout.
Description
Keywords
feed consumption, growth, photoperiod, rainbow trout
Citation
Ergün, S., Yigit, M., & Türker, A. (2003). Growth And Feed Consumption Of Young Rainbow Trout (Oncorhynchus Mykiss) Exposed To Different Photoperiods. The Israeli Journal of Aquaculture - Bamidgeh, 55(2), 132-138.
Extent
7 pages
Format
Geographic Location
Time Period
Related To
Rights
Rights Holder
Email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.