Effects of background colour exposure on the colour of farmed prawns
Past studies have shown that the methods used during harvesting farmed prawns can have a significant impact on cooked prawn colour, and hence price of farmed product (Wade et al., 2014). The response of prawns to background colour (Parisenti et al., 2011b; Tume et al.,2009) also suggests that harvesting animals into black bins has the potential to rapidly improve prawn colour, but also that harvesting into white bins may adversely affect cooked prawn colour. The results of the current study demonstrated that post-harvest exposure to different coloured substrates can affect prawn colour (Fig. 4), but only a mild disparity in colour was observed using subjective scoring as is currently applied commercially to determine market price (Table5). In some cases exposure to white substrates produced significantly paler prawns but black substrates had no effect. Meanwhile in other cases, black substrates produced significantly darker prawns but white substrates had no effect.
Effects of background colour exposure on the colour of farmed prawnsPast studies have shown that the methods used during harvesting farmed prawns can have a significant impact on cooked prawn colour, and hence price of farmed product (Wade et al., 2014). The response of prawns to background colour (Parisenti et al., 2011b; Tume et al.,2009) also suggests that harvesting animals into black bins has the potential to rapidly improve prawn colour, but also that harvesting into white bins may adversely affect cooked prawn colour. The results of the current study demonstrated that post-harvest exposure to different coloured substrates can affect prawn colour (Fig. 4), but only a mild disparity in colour was observed using subjective scoring as is currently applied commercially to determine market price (Table5). In some cases exposure to white substrates produced significantly paler prawns but black substrates had no effect. Meanwhile in other cases, black substrates produced significantly darker prawns but white substrates had no effect.
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