In other words, the conclusions are highly speculative. The most recent results of Saavedra, Conceição, Helland, Pousão-Ferreira and Dinis (2008) can be interpreted as providing evidence that ‘acute’ supplementation of FAA recognized as deficient, based on its content in the compound (formulated) diet, does not ensure a significant impact on protein synthesis. The synthesis rate is due to ‘recirculation’ of the significant pool of amino acids through protein degradation, both in the metabolic, regular proteolysis-renewal processes, and most importantly, through proteosomally degraded ‘defective’ proteins that are almost instantly hydrolysed after ‘faulty’ synthesis (Vabulas & Hartl 2005).