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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 | ||
| Iranian Journal of Fisheries Sciences | ||
| مقاله 3، دوره 17، شماره 1، فروردین 2017، صفحه 38-49 اصل مقاله (213.05 K) | ||
| شناسه دیجیتال (DOI): 10.22092/ijfs.2018.114638 | ||
| نویسندگان | ||
| F. Delihasan Sonay* ؛ N. Başçınar؛ N. Başçınar؛ N. Başçınar | ||
| چکیده | ||
| 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 < /em><0.001). | ||
| کلیدواژه‌ها | ||
| Rainbow trout؛ Oncorhynchus mykiss؛ Brook trout؛ Salvelinus fontinalis؛ POLYCULTURE؛ Growth performance؛ Feed Conversion Ratio | ||
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آمار تعداد مشاهده مقاله: 309 تعداد دریافت فایل اصل مقاله: 342 |
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