Animals (Basel) 2021 Mar 2;11(3). Epub 2021 Mar 2.
Dipartimento di Scienze Agrarie, Alimentari e Agro-ambientali, University of Pisa, 56124 Pisa, Italy.
This study aimed to characterise the fibre composition of (TB) and (SM) muscles from 20 Maremmana (MA) and 20 Aubrac (AU) steers, and the effect of grazing activity in comparison with feedlot system. The histochemical method was performed with the m-ATPase method with an acid pre-incubation, thus allowing to distinguish type I, IIA, and IIB fibres. Additionally, on total RNA extracted from SM muscle, the expressions of atp1a1, mt-atp6, and capn1 genes were evaluated, in order to find potential associations with muscle fibre histochemical characteristics. Read More