Gilthead seabream is one of the most important species produced in the Mediterranean area. Available data reflect wide differences in the published requirements of methionine (Met) and total sulfur amino acids (TSAA) attributed to differences in the estimation method used.
A new peer-review publication by CIIMAR (Portugal) and leading methionine manufacturer Adisseo has reevaluated the dietary Met requirement of gilthead seabream juveniles, using hydroxy-methionine (OH-Met) as the dietary Met source. Furthermore, the study compared the efficiency of OH-Met and DL-Met as dietary Met sources.
The dietary Met requirement for maximum growth performance of gilthead seabream was estimated to be 1.05% and TSAA content to be 1.59%. Also, OH-Met was used as efficiently as DL-Met for growth performance, concluding that both dietary Met sources can be used interchangeably as dietary Met sources for gilthead seabream juveniles.