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:: Volume 27, Issue 3 (8-2018) ::
isfj 2018, 27(3): 159-163 Back to browse issues page
Effects of feeding rate on growth and feed efficiency of Sobaity seabream (Sparidentex hasta) fry in nursery phase
M. Zabayeh Najafabadi , M. Torfi Mozanzadeh , E. Pagheh , J. Ghafleh Maramazi , J. Hosseini , Sh. Mahrjooyan , R. Osooli , H. Saghavi , J. Monem , R. Nahavandi
Imam Khomeini Marine Fish Research Station, Bandar Imam Khomeini, Iran
Abstract:   (263 Views)
A 30-day research was conducted to evaluate the effects of different feeding rate (formulated diet) (2, 4, 6, 8 and 10% of wet body weight/day) and also fresh food (20% of wet body weight/day) on growth performance and feed utilization of Sparidentex hasta fry in nursery phase. Growth performance including final weight and specific growth rate (SGR) significantly increased with increasing feeding rate (p<0.05). The relationship between SGR (% per day) and ration level (% per day) was an asymptotic curve described as SGR = 0.2809X+1.4191. Feed efficiency ratio (FER) decreased significantly with increasing ration levels, and the relationship between FER and ration level (% per day) described as FER = -0.0586X+1.3184. Hepatosomatic index significantly increased with increasing feeding rate (p<0.05). Based on the above results, it may be concluded that a ration size of 8% of body weight per day is optimal for good growth and feed conversion efficiency of juvenile S. hasta in nursery phase.
Keywords: Feeding rate, nursery phase, growth index, Sparidentex hasta
Full-Text [PDF 319 kb]   (52 Downloads)    
Type of Study: Research |
Received: 2017/08/4 | Accepted: 2018/09/23
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Zabayeh Najafabadi M, Torfi Mozanzadeh M, Pagheh E, Ghafleh Maramazi J, Hosseini J, Mahrjooyan S, et al . Effects of feeding rate on growth and feed efficiency of Sobaity seabream (Sparidentex hasta) fry in nursery phase. isfj. 2018; 27 (3) :159-163
URL: http://isfj.ir/article-1-1841-en.html


Volume 27, Issue 3 (8-2018) Back to browse issues page

با کسب مجوز از دفتر کمیسیون بررسی نشریات علمی وزارت علوم، تحقیات و فنآوری مجله علمی شیلات بصورت آنلاین می باشد و تعداد محدودی هم به چاپ می رساند. شماره شاپای جدید آن ISSN:2322-5998 است

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