Opto-staru was the only meat quality which was affected by transport time, with the short time resulting in a brighter (higher Opto-star values; P < 0.05) SM than the medium and long time transport. This was in agreement with Stier et al. (2001) found who that the muscle pH decline triggered by preslaughter conditions influences meat colour (Stier et al., 2001). Previous study has shown that 70% of the variation in L*, b* values and 28% of the a* value in LD was explained by ultimate pH (Bidner et al., 2004).Other study also report that 43% of the variation in L* value was explained by the ultimate pH(Brewer et al., 2001).