The Effect of Astaxanthin and β-carotene on the Colour of the Kissing Gourami (Helostomatemminckii)

Abstract

In this study, we have investigated the effects of astaxanthin and b-carotene on the skin colour of fish Kissing Gourami (Helostomatemminckii). 80 fishes were randomly selected into 2 groups (40 each group). The control group fish were fed with standard flake feed. Astaxanthin (100 mg/kg) and β-carotene (150 mg/kg) were added to the standard diet for experimental group. Fish skin colour was compare with colour scale. Colour change was recorded weekly for the 12 weeks of experiment. First colour change was record in 6th week in control group (light pink). No other change of colour was determinate. In experimental group was first colour change in 4th week (light pink) and the maximal influence of astaxanthin and β-carotene was recorded in 10th week (light red). Therefore, it was determined that these pigment sources have an effect on the colour of gourami fish.

Keywords

• astaxanthin
• β-carotene
• colour scale
• kissing gourami