Correlation between body weight and nutritional value of Alosa kessleri

Ahmad Ghenaatparast, Elena Tricarico, Mehdi Nikoo, Mohammad Reza Ghomi

Abstract: In this study, chemical composition and fatty acid content in Alosa kessleri regarding to body weight was determined. Thirty fish (average weight = 47.43 ± 33.47 g) in the weight range of 10.3 to 123.0 g were caught by gill net from Caspian Sea (Chalous, Iran) and transported to laboratory for further analysis. A significant correlation between fish weight and protein (r = 0.458, P = 0.011) and fat (r = -0.622, P = 0.001) content was observed. There was a close range of the three groups of fatty acids to each other, saturated fatty acids (SFA = 31.41%), polyunsaturated fatty acids (PUFA = 30.69%), and monounsaturated fatty acids (MUFA = 29.18%). Palmitic acid (C16:0) (20.85% of total fatty acids), and oleic acid (C18:1) (24.95% of total fatty acids), were the most abundant SFAs and MUFAs, respectively. A higher content of n-3 fatty acids was observed than n-6 fatty acids, resulting in n-3/n-6 ratio of 5.25. A significant correlation was found for DHA/EPA ratio (r = 0.449, P = 0.013) with fish weight. The results of the study indicated that protein and lipid content and DHA/EPA ratio were influenced by body weight.

Keywords: Alosa kessleri; body weight; chemical composition; fatty acid

Date published: 2018-12-28