Influence of Stall Finishing of Podolian Young Bulls Raised on Pasture on Fatty Acid Composition and Oxidative Status of Meat

Abstract

Sixteen Podolian young bulls were used to study the effects of two different feeding systems on fatty acids composition and oxidative stability of meat: C group, eight young bulls were kept indoors and fed with commercial concentrate for all experimental period (260 days); PC group, eight young bulls were allowed to graze a pasture for 200 days and shifted indoor, fed with concentrate, 60 days before being slaughtered. Meat from young bulls that were allowed, before stall finishing with concentrate, to graze a natural pasture showed lower levels of some n-6 PUFA and higher levels of some n-3 PUFA than meat from animals that were offered only concentrate for the whole experimental period. Lipid oxidation was not affected by the dietary treatment. After a period of 60-day-indoor finishing with concentrate, meat retained part of the health benefits, with regard to fatty acid composition, occurring from grazing.

Fatty acid, volatile and sensory characteristics of beef as affected by grass silage or pasture in the bovine diet

“…Similarly, in our study, the higher C18:3n-3 and lower C18:2n-6 concentrations for the GSPC bulls compared to GSC and C bulls are indicative of inclusion of grazed grass in the diet of the bulls. This shows that finishing on concentrate diets, up to 71 days in our case, may not entirely eliminate the contribution to muscle fatty acids of grazed grass offered prior to the finishing period, which was in agreement with Scerra et al (2014) in a study conducted over a relatively shorter finishing period (60 days).…”

“…In the present study, its concentration was similar among all treatments. As shown by Scerra et al (2014), a higher C18:2c9,t11 content was reported from LT muscle of bulls fed on pasture prior to finishing on concentrate diet compared to bulls raised on concentrate diet only. However, compared to our study, the pasture feeding period was longer (200 vs 100 days) and the concentrate finishing period was shorter (60 vs 71 days) in the study of Scerra et al (2014) which may have contributed to a greater effect of the pasture diet on this particular isomer.…”

“…As shown by Scerra et al (2014), a higher C18:2c9,t11 content was reported from LT muscle of bulls fed on pasture prior to finishing on concentrate diet compared to bulls raised on concentrate diet only. However, compared to our study, the pasture feeding period was longer (200 vs 100 days) and the concentrate finishing period was shorter (60 vs 71 days) in the study of Scerra et al (2014) which may have contributed to a greater effect of the pasture diet on this particular isomer. Dannenberger et al (2005) reported that not all CLA isomers were associated with grass-based diets as some CLA isomers such as C18:2t9,c11 and C18:2t10,c12 were abundant in muscle from animals fed concentrate based diets while others such as C18:2t11,c13 and C18:2c9,t11 were abundant in muscles of animals finished on grass.…”

“…In this context, beef from grass based production systems is often leaner (Scerra et al, 2014) with a more desirable fatty acid composition, specifically higher levels of n-3 polyunsaturated fatty acids (PUFA) and some conjugated linoleic acids (CLAs), such as C18:2c9,t11 (Aldai et al, 2011). However, feeding grazed grass alone can lead to a reduction in intramuscular fat (IMF) content to a level that has a negative impact on consumer liking (juiciness, tenderness and flavour scores) of the beef (Hunt et al, 2016).…”

Geobotanical description and ecology of the population of the endemic species Galatella Saxatilis Novopokr. in Syugaty mountain gorge

“…The rocky Mountains here are classified as low mountains. The rocky Mountains of Syugata are a mountain range consisting of strongly cut, rocky slopes consisting of open rocky rocks and high cliffs forming a gorge [12].…”