Meat quality and fatty acid profile of the musculus longissimus lumborum in Czech Fleckvieh, Charolais and Charolais x Czech Fleckvieh bulls fed different types of silages
2010
Barton, L.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Bures, D.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Kudrna, V.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic)
The effects of breed and diet containing different types of silages on meat quality parameters and fatty acid profile of m. longissimus lumborum (MLL) were evaluated in 30 Czech Fleckvieh (CF), Charolais (CH) and Charolais x Czech Fleckvieh (CH x CF) bulls. The animals were fed two mixed diets as follows: MS (based on maize silage) and LCS (based on legume-cereal mixture silage and lucerne silages) with different concentrations of dietary energy and fatty acids. The MLL from CH bulls had the lowest content of dry matter (P less than 0.01), less protein (P less than 0.01) and lighter meat (P less than 0.01) compared to the CF. The extensive LCS diet reduced dry matter (P less than 0.01) and intramuscular fat (P less than 0.01) and increased the content of hydroxyproline (P less than 0.05). The CH bulls exhibited higher PUFA n-3 (P less than 0.05) and lower MUFA (P less than 0.05) compared to the CF, with the CH x CF being intermediate. The LCS diet enhanced the proportions of PUFA (P less than 0.05) and PUFA n-3 (P less than 0.001) and reduced MUFA (P less than 0.001). In conclusion, both breed and diet affected the meat quality and fatty acid profile of the intramuscular fat of the bulls. The replacement of maize silage with the legume-cereal mixture and lucerne silages in the diet reduced the concentration of intramuscular fat and improved its fatty acid profile from the human nutrition perspective.
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