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 پایگاه استنادی علوم جهان اسلام (ISC)

پایگاه اطلاعات جهاد دانشگاهی (SID) 



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:: Volume 19, Issue 3 (2020) ::
IJFS 2020, 19 Back to browse issues page
The effects of dietary nucleotide type (Hilyses and Augic15) on growth performance and salinity resistance of kutum, Rutilus kutum (Kamensky, 1901) fingerlings
S. Karimzadeh , A. Mohamad Jafary , A. Keramat Amirkolaie *
Department of fisheries, Faculty of Animal Sciences and Fisheries, Sari Agricultural Sciences and Natural Resources University (SANRU), Sari, Iran , amirkola@yahoo.com
Abstract:   (2968 Views)
The aim of this research was to evaluate the effects of dietary nucleotides on performance, immune system and salinity resistance of kutum fingerlings during migration to the sea. Five experimental diets were prepared by addition of Hilyses (0.75 and 1.5%) and/or Augic15 (0.3 and 0.6%) to a control diet. After eight weeks adding nucleotide diets, fish were exposed to saline water for 48h. Supplementation of both nucleotide sources improved fish growth parameters (p<0.05). Fish mortality was also decreased by the additives in both fresh and sea water. Glucose and cortisol levels significantly decreased with the administration of both nucleotide sources (62 to 69 versus 75 mg dL-1 for glucose and 6 to 8.5 versus 9.8 mg dL-1 for cortisol (p<0.05). Supplementation of Hilyses and /or Augic15 increased lysozyme activity in the blood (p<0.05) and maximum activity has observed in fish fed at high doses of Hilyses and Augic15diets. In conclusion, an improved performance of R. kutum fingerlings fed on or with both nucleotide sources may suggest that kutum fingerlings require a larger dietary nucleotide at early life stage to control stress related parameters such as cortisol and glucose.
Keywords: Kutum, Saline water, Stress resistance, Growth, Fingerling, Glucose, Cortisol
Full-Text [PDF 333 kb]   (1349 Downloads)    
Type of Study: Orginal research papers | Subject: aquaculture
Received: 2017/09/2 | Accepted: 2018/03/10 | Published: 2020/05/1
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Karimzadeh S, Mohamad Jafary A, Keramat Amirkolaie A. The effects of dietary nucleotide type (Hilyses and Augic15) on growth performance and salinity resistance of kutum, Rutilus kutum (Kamensky, 1901) fingerlings. IJFS 2020; 19 (3) :1140-1152
URL: http://jifro.ir/article-1-2908-en.html


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Volume 19, Issue 3 (2020) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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