Weight and color evaluation of whole and filleted carp by image analysis

Abstract

Weight estimation of whole fish and fillets, and skin color of whole fish and fillet meat colors of the male and female scaled and mirror carp (Cyprinus carpio) were evaluated by image analysis. After measuring the weight of 10 scaled and 10 mirror carp and their fillets, pictures of both sides of whole fish, and meat side of fillets were taken in a light box. The relationship between weight (W) and view area (V) was calculated by linear (W = A + BV), and power (W = A VB) equations. According to the power equation B values, scaled and mirror carps showed positive allometric growth in culture conditions. Statistically, there was no significant difference between the parameters of whole fish left and right sides, as well as whole fish gender. The same was true for right and left fillets, and female and male fish fillets. For both left and right sides scaled and mirror carp had no difference between average L*, a* and b* values (P>0.05). Also, there was no difference between average L*, a* and b*values of male and female of scaled and mirror carp fillets (P>0.05). Image analysis can be used to determine the size, weight, view area and skin and meat color of two carp species and their fillets.