Nutritional properties of kutum, Rutilus frisii kutum (Kamensky), silver carp, Hypophthalmichthys molitrix (Val.), and rainbow trout, Oncorhynchus mykiss (Walbaum), correlated with body weight
Mohamad Reza Ghomi, Amir Dezhabad, Mortaza Sam Dalirie, Mehdi Nikoo, Seyedrasool Toudar, Mehdi Sohrabnejad, Zeinolabedin Babaei
ABSTRACT. The correlation of proximate composition and fatty acid content of the meat of brackish-water kutum, Rutilus frisii kutum (Kamensky), warm-water silver carp, Hypophthalmichthys molitrix (Val.), and cold-water rainbow trout, Oncorhynchus mykiss (Walbaum) were determined in relation to body weight. In silver carp, body protein increased (r = 0.574, P = 0.032) with increased body weight while moisture decreased (r = -0.789, P = 0.000). In kutum and rainbow trout the contents of protein and lipid were independent of fish size (P > 0.05). The n-3 polyunsaturated fatty acids of silver carp meat increased with body weight (r = 0.592, P = 0.033), while n-6 fatty acids decreased (r =-0.667, P = 0.013). The results indicated the important advantages of the nutritional quality of fish of different sizes in the human diet.
Keywords: proximate composition, fatty acids, kutum, silver carp, rainbow trout, body weight
CORRESPONDING AUTHOR:
M.R. Ghomi [+]
Department of Fisheries Sciences
Islamic Azad University – Tonekabon Branch, Tonekabon, Iran
e-mail: mghomi@tonekabon.iau.ac.ir
A. Dezhabad
Department of Veterinary Science
Islamic Azad University – Chalous Branch, Chalous, Iran
M. Nikoo
School of Food Science and Technology
Jiangnan University, Wuxi, China
M. Sam Dalirie
Department of Agriculture
Islamic Azad University – Chalous Branch, Chalous, Iran
S. Toudar
Department of Educational Management
Islamic Azad University – Chalous Branch, Chalous, Iran
M. Sohrabnejad
Department of Fisheries, Tarbiat Modarres University, Noor, Iran