M.Ghotbi, M. , M.Ghotbi, M. , Takami, G. (2011), 'Contribution of Vitaton (Β-Carotene) to the Rearing Factors Survival Rate and Visual Flesh Color of Rainbow Trout Fish in Comparison With Astaxanthin', World Academy of Science, Engineering and Technology, Open Science Index 59, International Journal of Animal and Veterinary Sciences, 5(11), 709 - 714.