Taurine modulates protein turnover in juvenile meagre

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A collaborative study between IPMA (Portuguese Institute for the Ocean and Atmosphere) and SPAROS evaluated the modulatory effect of dietary taurine supplementation on protein turnover of meagre juveniles.

Meagre juveniles (IBW: 3.2 g) were fed semi-purified diets with graded levels of taurine (0.07, 0.52, 0.98, 1.46 and 2.11% of feed) for 38 days. Increasing dietary taurine levels improved growth performance of meagre. At the highest taurine dose (2%), fish showed more than 6-fold increase of IBW. The higher growth rates could be associated to a significant decrease in protein degradation in the liver and white muscle preferentially via the autophagy-lysosomal pathway (cathepsins) over the ubiquitin-proteasome route. As part of its continuous effort to generate new knowledge on fish nutrition, SPAROS has formulated and manufactured the experimental diets used in this trial.

This study was supported by Diversiaqua (Mar2020 16-02-01-FMP-0066) and Diversiaqua II (MAR2020-P02M01-0656P) projects.

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