L.M. Lopez, P.A. Tyler, M.T. Viana
Abstract:
Growth rates of Haliotis tuberculata were evaluated at three different temperatures (15, 18, and 22 degrees C) when provided two artificial diets (fish meal and casein meal). Juveniles fed the fish meal diet and cultured at 22 degrees C produced higher growth rates on shell length and body weight (134.81 mu m/day and 3,205 mu g/day), respectively. To addition, the soft tissue weight/shell weight ratio was found to be the highest in these juveniles. No differences in proportions of crude protein, crude lipids, and moisture content were found between diets. Survival of juveniles during the feeding trial was not affected by the dietary treatments. The feed conversion ratio did differ significantly between low (15 degrees C) and highest (18 and 22 degrees C) temperatures.
(Univ Southampton, Sch Ocean & Earth Sci, European Way, Southampton SO14 3ZH, Hants, England, UK)