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 پایگاه استنادی علوم جهان اسلام (ISC)

پایگاه اطلاعات جهاد دانشگاهی (SID) 



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:: Volume 15, Issue 3 (2016) ::
IJFS 2016, 15 Back to browse issues page
Growth and feed utilization of goldfish (Carassius auratus) fed graded levels of brewers yeast (Saccharomyces cerevisiae)
E. Gumus * , B. Aydin , M. Kanyilmaz
, egumus@akdeniz.edu.tr
Abstract:   (6864 Views)

In this study, a feeding trial was conducted to examine the potential of replacing fish meal with brewers yeast in practical diet of goldfish (Carassius auratus). Five isoproteic (37% CP) and isocaloric (3350 kcal/kg) diets were formulated to contain graded levels of brewers yeast. Fish meal protein was replaced by 0%, 15%, 25%, 35%, and 45% of yeast. Each diet was randomly allocated to triplicate groups of 20 fish (initial average weight of 0.56 g fish-1) in glass aquarium (65L). Fish were fed three times per day to apparent satiation for 84 days. At the end of the experiment, weight gain, specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER), condition factor (CF), survival rate (SR), hepatosomatic indices (HSI) and body composition of goldfish fry were determined. According to the results, weight gain, SGR, FCR and PER of fish fed the diet including yeast replaced 35% of the fish meal were better than those of fish fed the other diets. There were no significant differences in SR and HSI values among fish fed diets (p>0.05). However, CF among fish fed the experimental diets was significantly differ (p>0.05). Whole body composition was similar among fish fed different diets. The optimal replacement level of fishmeal protein by brewers yeast was determined by second-order polynomial regression to be (y= 2, 2237- 0,0004x2 + 0,0279x; R² = 0,9977) 34.875%, on the basis of SGR

Keywords: Saccharomyces cerevisiae, Carassius auratus, Fish meal replacement, Growth, Feed utilization.
Full-Text [PDF 459 kb]   (6232 Downloads)    
Type of Study: Orginal research papers | Subject: fish disease
Received: 2016/08/2 | Accepted: 2016/08/2 | Published: 2016/08/2
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Gumus E, Aydin B, Kanyilmaz M. Growth and feed utilization of goldfish (Carassius auratus) fed graded levels of brewers yeast (Saccharomyces cerevisiae). IJFS 2016; 15 (3) :1124-1133
URL: http://jifro.ir/article-1-2332-en.html


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Volume 15, Issue 3 (2016) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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