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khandan Barani, Hashem, Dahmardeh, Hosein, Miri, Mohadeseh, Rigi, Mahin. (1398). The effects of feeding rates on growth performance, conversion efficiency and body composition of juvenile snow trout, Schizothorax zarudnyi. سامانه مدیریت نشریات علمی, 18(3), 507-516. doi: 10.22092/ijfs.2019.118285
Hashem khandan Barani; Hosein Dahmardeh; Mohadeseh Miri; Mahin Rigi. "The effects of feeding rates on growth performance, conversion efficiency and body composition of juvenile snow trout, Schizothorax zarudnyi". سامانه مدیریت نشریات علمی, 18, 3, 1398, 507-516. doi: 10.22092/ijfs.2019.118285
khandan Barani, Hashem, Dahmardeh, Hosein, Miri, Mohadeseh, Rigi, Mahin. (1398). 'The effects of feeding rates on growth performance, conversion efficiency and body composition of juvenile snow trout, Schizothorax zarudnyi', سامانه مدیریت نشریات علمی, 18(3), pp. 507-516. doi: 10.22092/ijfs.2019.118285
khandan Barani, Hashem, Dahmardeh, Hosein, Miri, Mohadeseh, Rigi, Mahin. The effects of feeding rates on growth performance, conversion efficiency and body composition of juvenile snow trout, Schizothorax zarudnyi. سامانه مدیریت نشریات علمی, 1398; 18(3): 507-516. doi: 10.22092/ijfs.2019.118285

The effects of feeding rates on growth performance, conversion efficiency and body composition of juvenile snow trout, Schizothorax zarudnyi

Iranian Journal of Fisheries Sciences
مقاله 142، دوره 18، شماره 3، مهر 2019، صفحه 507-516    اصل مقاله (270.68 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22092/ijfs.2019.118285
نویسندگان
Hashem khandan Barani* 1؛ Hosein Dahmardeh2؛ Mohadeseh Miri1؛ Mahin Rigi1
1Hamoun International Wetland Research Institute, University of Zabol, Zabol, Iran
2Department of Fisheries, faculty of Natural Resources, University of Zabol, Zabol, Iran
چکیده
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 diet) at five ration sizes 2%, 4%, 6%, 8% and 10% of their body weight per day, for 60 days. 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 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.
کلیدواژه‌ها
Growth؛ Body composition. Ration. Schizothorax zarudnyi
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