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An investigation on the effects of juvenile rainbow trout (Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis) monoculture and duo-culture farming in freshwater and seawater on growth performance
F. Delihasan Sonay *, N. Başçınar
Abstract:   (61 Views)

The objective of this study was to compare growth performance and feed conversion ratios of rainbow trout (Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis) juveniles in monoculture and duo-culture in freshwater and seawater under aquarium conditions. The fish were about 2-months old hatchery-reared brook and rainbow trout with initial weights of 0.934±0.033 (n=360) and 1.014±0.019 (n=360) g, respectively. The juveniles were kept in 10 L aquaria. Each aquarium contained 40 fish: 40 fish from each species for monoculture, 20+20 (rainbow trout+brook trout) fish from each species for duo-culture. The fish were in 3 groups with three replicates in freshwater and seawater and 18 aquaria were used. At the end of the 45 day study; mean live weights of brook trout were 2.735±0.153 g, rainbow trout 2.925±0.262 g in monoculture and brook trout 2.354±0.186 g, rainbow trout 3.882±0.494 g in duo-culture in seawater, brook trout 3.088±0.085, rainbow trout 3.364±0.093 g in monoculture and brook trout 2.164±0.169, rainbow trout 3.948±0.124 g in duo-culture in fresh water. While there were similarities between brook trout and rainbow trout in monoculture groups in sea water and fresh water, some differences were realized in duo-culture (p<0.001).

Keywords: Rainbow trout, Oncorhynchus mykiss, Brook trout, Salvelinus fontinalis, Polyculture, Growth Performance, Feed conversion ratio
Full-Text [PDF 185 kb]   (51 Downloads)    
Type of Study: Orginal research papers | Subject: aquaculture
Received: 2017/02/13 | Accepted: 2017/02/13 | Published: 2017/02/13
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Delihasan Sonay F, Başçınar N. An investigation on the effects of juvenile rainbow trout (Oncorhynchus mykiss) and brook trout (Salvelinus fontinalis) monoculture and duo-culture farming in freshwater and seawater on growth performance. IJFS. 2017; 16 (1) :38-49
URL: http://jifro.ir/article-1-2572-en.html
Back to browse issues page Volume 16, Number 1 (2-2017)
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
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