Effect of dietary protein on the growth of mullet, Chelon labrosus, reared in sea cage

  • Muhammet Altunok
  • Osman Özden
Keywords: Chelon labrosus, dietary protein, growth, cage culture


The purpose of the study was to obtain preliminary data on the effect of dietary protein on the growth of the thick-lipped grey mullet (Chelon labrosus) juveniles reared in net sea-cages. The juveniles (6.2 ± 0.61 g) were obtained from the wild and were stocked into net sea-cages at a stocking rate of 100 juveniles per cubic meter and fed with experimental diets including 25, 30, or 35% crude protein for 87 days. The highest mean weight and specific growth rate (SGR) were 39.5 g and 2.13% day-1, respectively, at protein levels of 30%. The diet also resulted in the most efficient feed conversion ratio of 1.61.


M. Altunok [+]
Limburger Str. 4, 35260, Stadtallendorf, Germany
e-mail: muhammet.altunok@hotmail.de
Osman Özden
Ege University, Faculty of Fisheries, Bornova-Izmir 35100, Turkey