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¹ Çanakkale Onsekiz Mart University, Department of Forestry, Bayramiç Vocational School, Çanakkale
² Kastamonu University, Department of Sea and Port Management, İnebolu Vocational School, Kastamonu
³ Çanakkale Onsekiz Mart University, Department of Aquaculture, Çanakkale
⁴ Kastamonu University, Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Kastamonu DOI : 10.4194/1303-2712-v19_5_03 Viewed : 5180 - Downloaded : 3207 In this study, the effects of gibel carp meal (GFM) application as a protein source on growth performance, fillet composition, feed digestion and haematological and serum biochemical indices of rainbow trout (Oncorhynchus mykiss) were evaluated. Replacement of anchovy fish meal (AFM) with GFM was performed at 0%, 50% and 100% levels (GFM0, GFM50 and GFM100). After 60 days of feeding the best nutritional performance was obtained in the GFM100 group. There was no significant difference in crude moisture, crude protein, crude lipid or crude ash contents in fish fillet between the GFM0, GFM50 and GFM100 groups. No side effects were observed in hematological and serum biochemical indices of rainbow trout. Dry matter, crude protein and crude lipid digestibility coefficients did not differ significantly in experimental groups. As a conclusion, the results of the study suggested that the GFM could be used totally as a replacer of AFM in diets for rainbow trout without the adverse effects on growth performance, feed use, feed digestion, hematological and serum biochemical parameters of fish. Keywords : Fish meal replacement, Invasive species, Growth performance, Rainbow trout, Blood parameters