Effect of replacing dietary fish oil with soybean oil on growth performance fatty acid composition and haematological parameters of juvenile meagre Argyrosomus regius     
Yazarlar (5)
Yılmaz Emre
Akdeniz Üniversitesi, Türkiye
Adem Kurtoğlu
Mediterranean Fisheries Research Production And Training Institute, Türkiye
Nesrin Emre
Mediterranean Fisheries Research Production And Training Institute, Türkiye
Prof. Dr. Betül GÜROY Yalova Üniversitesi, Türkiye
Prof. Dr. Derya GÜROY Yalova Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Aquaculture Research
Dergi ISSN 1355-557X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 07-2016
Cilt No 47
Sayı 7
Sayfalar 2256 / 2265
DOI Numarası 10.1111/are.12677
Makale Linki http://doi.wiley.com/10.1111/are.12677
Özet
A nutrition trial with meagre, Argyrosomus regius was assessed to determine the effect of dietary replacement of fish oil (FO) by soybean oil (SO) on the growth, feed utilization, body composition, fatty acid composition and basic haematological parameters. Six isonitrogenous (47% crude protein) and isoenergetic (gross energy 22 kJ/g) experimental diets were formulated by replacing 0 (FO), 20 (S20), 40 (S40), 60 (S60), 80 (S80) and 100 (S100) % of the FO with SO. Fish were fed three times daily to near satiation for 14 weeks. The specific growth rate (SGR) of fish fed S100 diet was significantly lower than the other treatments, except SO80 diet. The fish fed SO100 diet displayed significantly higher feed conversion ratio than that of other diets (P < 0.05). It was observed that fish fed the SO100 and SO80 diets displayed haemoglobin (HGB) levels significantly lower (P < 0.05) than fish fed the SO20 diet. Packed cell volume (PCV) of fish fed SO20 diet was significantly higher compared to SO100. The white blood cell (WBC) and red blood cell (RBC) remained unaffected by dietary treatment. The docosahexaenoic acid (22:6n-3, DHA) and eicosapentaenoic acid (20:5n-3, EPA) levels of meagre were significantly reduced by the substituting of dietary SO by FO at the end of the feeding period. The level of linoleic acid (18:2n-6, LA) and linolenic acid (18:3n-3, LNA) significantly raised in fish fed with SO diets (P < 0.05). The results of this study showed that SO could be replaced FO up to 80% in meagre diet without negative effect on growth performance and basic haematological parameters. Furthermore, the maximum level of FO replacement with SO determined by second order polynomial regression analysis, was 30.1% on the basis of maximum SGR.
Anahtar Kelimeler
Argyrosomus regius | fatty acid | growth | health | meagre | vegetable oil