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:: دوره 15، شماره 3 - ( 1395 ) ::
جلد 15 شماره 3 صفحات 1133-1124 برگشت به فهرست نسخه ها
Growth and feed utilization of goldfish (Carassius auratus) fed graded levels of brewers yeast (Saccharomyces cerevisiae)
چکیده:   (6867 مشاهده)

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

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نوع مطالعه: پژوهشي | موضوع مقاله: fish disease
دریافت: 1395/5/12 | پذیرش: 1395/5/12 | انتشار: 1395/5/12
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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-fa.html

Growth and feed utilization of goldfish (Carassius auratus) fed graded levels of brewers yeast (Saccharomyces cerevisiae). مجله علوم شیلاتی ایران. 1395; 15 (3) :1124-1133

URL: http://jifro.ir/article-1-2332-fa.html



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دوره 15، شماره 3 - ( 1395 ) برگشت به فهرست نسخه ها
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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