Considering animals slaughtered at the same carcass fat grade, IS
young bulls presented higher in vivo performance and carcass quality
in terms of dressing percent, conformation and lean meat compared
with IH young bulls. Differences in FA composition and proportion
between breeds were observed mainly in the phospholipids fraction.
IS meat had lower C14:0, C16:0, total SFA, C20:2n-6 and C22:4n-6
proportion, but higher C18:2n-6 cis, PUFAn-6, total PUFA proportion
and PUFA/SFA ratio than IH meat.
Feeding long term diet containing up to 8% of whole ground
linseed on DM base, increased the dry matter of LT muscle without
effects on performance and carcass quality of animals. Our findings
show that linseed moderately enhanced the nutritional value of meat
with regards to fat composition having a limited effect on fatty acids
composition and quantity. The main effects of linseed addition on FA
composition regard the decreasing of C14:0 and C16:0 in neutral
lipids, the increasing of C20:5n-3 and the decreasing of C20:4n-6,
PUFAn-6 proportion in phospholipids and also the increasing of
PUFAn-3 and in particular of C18:3n-3 proportions both in neutral and
phospholipids fractions.
Combining the choice of breed and diet could be significant for
improving the nutritional value of meat.