Skoči na glavni sadržaj

Izvorni znanstveni članak

INTRAMUSCULAR FATTY ACID PROFILE OF INTENSIVELY REARED SIMMENTAL BEEF-BULLS

Danijel Karolyi orcid id orcid.org/0000-0003-0409-9071 ; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Antonija Jakupec ; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia


Puni tekst: engleski pdf 260 Kb

str. 39-45

preuzimanja: 203

citiraj


Sažetak

Beef intramuscular fatty acid (FA) profile was investigated on a sample of Simmental beef bulls from an intensive rearing system in Croatia. Animals were housed indoor in common pens on a concrete slatted floor (SF group, n=15) or a full floor with straw bedding (FF group, n=15). Diet in both groups was given as total mixture ration composed from maize grain and stalk silage, super-concentrate and hay (average composition per kg: 599 g of DM, 76 g of crude protein and 4.59 MJ of ME as feed). Bulls were slaughter at similar age (494±17 days) and body weight (597.5±56.4 kg) and the intramuscular fat (IMF) content (g/kg) and FA composition (g/100g of total FA) of the M. longissimus thoracis were determined. The average IMF content was 25.49±9.21 with C18:1 (36.28±3.99), C16:0 (22.61±1.81), C18:0 (17.18±1.71) and C18:2n-6 (9.15±3.08) as the most represented FAs. The average proportions of total saturated FA (SFA) and monounsaturated FA (MUFA) were 44.33±1.89 and 41.78±4.31, while the share of total polyunsaturated FA (PUFA) was 13.89±4.72, with the averages of n-6 and n-3 PUFA totals of 12.93±4.52 and 0.68±0.24, respectively. The PUFA/SFA and n-6/n-3 ratios were out of the nutritionally recommended limits; while the proportion of beneficial conjugated linoleic acid (CLA) averaged 0.285±0.082 g/100g of FA. Floor type had no major effect on FA profile, except for slightly higher CLA and C20:1 and lower C12 and n-6/n-3 in SF group. It is concluded that the obtained results imply a need for feeding strategy that could enhance the nutritional quality of beef FA under the intensive production systems.

Ključne riječi

beef, Simmental breed, intramuscular fat, fatty acids, floor type

Hrčak ID:

135259

URI

https://hrcak.srce.hr/135259

Podaci na drugim jezicima: hrvatski

Posjeta: 451 *