Survey of nutritional and economic values of bighead (Hypophthalmichthys nobilis) in various sizes

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Abstract

Cultured fish are presented in various sizes and prices in market. The present study aimed
to investigate the proportion of nutritional value and price of various weight groups of
bighead (Hypophthalmichthys nobilis) and to offer two indices for comparing nutritional
value in proportion with fish prices. For this purpose, bighead specimens were prepared in
market sizes and their dry matter, lipid, protein and ash content and fillet yield were
determined. Then, the proportion of nutritional and financial value (NP) and justified price
difference based on dry matter content (PDdm) were calculated for each weight group. The
results showed that the light weight group has a higher NP index for dry matter, protein, ash
and energy than medium and heavy weight group. The NP index was the same between
medium and heavy groups. While the price difference between light weight and two other
weight groups is more than calculated PDdm index, the light weight group is a proper choice
for purchase.
*Corresponding author

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Iranian Scientific Fisheries Journal
Volume 20, Issue 1
September and October 2011
Pages 43-52

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