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 پایگاه استنادی علوم جهان اسلام (ISC)

پایگاه اطلاعات جهاد دانشگاهی (SID) 



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:: Volume 18, Issue 3 (2019) ::
IJFS 2019, 18 Back to browse issues page
The effects of feeding rates on growth performance, feed conversion efficiency and body composition of juvenile snow trout, Schizothorax zarudnyi
H. Khandan Barani * , H. Dahmardeh , M. Miri , M. Rigi
Hamoun International Wetland Research Institute, University of Zabol, Zabol, Iran , hashem.barani94@gmail.com
Abstract:   (3265 Views)

This study was performed to investigate the effects of feeding rates on growth performance, feed conversion and body composition of juvenile snow trout (Schizothorax zarudnyi). For this purpose, fish with an initial body weight of 2.17±0.1 g were fed a commercial diet (40% protein, 3.8 Kcal g-1 diet) at five ration sizes of 2%, 4%, 6%, 8% and 10% of their body weight per day, for 60 days. The feeding trial was conducted in triplicate. Maximum weight gain, best feed conversion ratio (FCR), best specific growth rate (SGR %), highest energy retention (ERE %) and protein efficiency ratio (PER %) were evident for rations of 4–6% body weight. Second-degree polynomial regression analysis for PER, FCR and ERE indicated the break-points occurred at 4.9, 5.1 and 5.2% BW day−1, respectively. Maximum body protein content was obtained for 4% and 6% rations. Body moisture, fat and ash content remained unchanged. Based on the above results, it may be concluded that the 4.9-5.2% body weight per day ration is optimal for the growth, conversion efficiencies and body composition of juvenile S. zarudnyi and it entails favorable economic benefits.

Keywords: Growth, Body composition, Ration, Schizothorax zarudnyi
Full-Text [PDF 271 kb]   (3517 Downloads)    
Type of Study: Orginal research papers | Subject: aquaculture
Received: 2016/05/15 | Accepted: 2017/01/11 | Published: 2019/07/15
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khandan Barani H, Dahmardeh H, Miri M, Rigi M. The effects of feeding rates on growth performance, feed conversion efficiency and body composition of juvenile snow trout, Schizothorax zarudnyi. IJFS 2019; 18 (3) :507-516
URL: http://jifro.ir/article-1-2238-en.html


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Volume 18, Issue 3 (2019) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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