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DIFFERENCES IN FAT CONTENT AND FATTY ACID COMPOSITION OF BREAST AND THIGH MUSCLES IN BROILER CHICKENS
Eva Strakova
; Veterinarski i farmaceutski univerzitet Brno, Republika Češka.
Pavel Suchy
; Veterinarski i farmaceutski univerzitet Brno, Republika Češka
Nora Mas
; Veterinarski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Vlasta Šerman
; Veterinarski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Vladimir Večerek
; Veterinarski i farmaceutski univerzitet Brno, Republika Češka
Leo Kroupa
; Veterinarski i farmaceutski univerzitet Brno, Republika Češka
Sažetak
The main aim of this work was to determine the differences in fatty acid composition of breast and thigh muscles in male ROSS 308 hybrid combination chickens. The mean live weight of male chickens on day 40 of fattening was 2.829 ± 0.299 g. It follows from the results that fat content in thigh muscles of chickens (82.64 g per kg) was very significantly higher (P ≤ 0.01) than that in breast muscles (14.28 g per kg). Analyses also revealed the differences in fat quality i.e. fatty acid composition (FAs), between both types of muscles. For example, the unsaturated fatty acids content (UFAs) in thigh muscles (64.59 ± 4.706 g per 100 g of fat) was very significantly higher (P ≤ 0.01) than that in breast muscles (54.09 ± 4.691 g per 100 g of fat). Fat in thigh muscles contained a very significantly higher (P ≤ 0.01) level of monounsaturated fatty acids (MUFAs) (38.29 ± 4.757 g of per 100 g of fat) and a significantly higher (P ≤ 0.05) level of polyunsaturated fatty acids (PUFAs) (26.29 ± 2.580 g per 100 of fat), compared to breast muscles (30.90 ± 4.199 g per 100 g of fat and 23.192 ± 2.304 g per 100 g of fat, respectively). Fat in thigh muscles also contained very significantly higher levels (P ≤ 0.01) of n-6 FAs (23.99 ± 2.331 g per 100 g of fat) and n-9 FAs (38.29 ± 4.757 g per 100 g of fat) compared to fat in breast muscles (20.92 ± 2.084 g per 100 g of fat and 30.90 ± 4.199 g per 100 g of fat, respectively). No statistically significant differences were found between the mean levels of n-3 FAs in thigh (2.30 ± 0.254 g per 100 g of fat) and breast muscles (2.26 ± 0.263 g per 100 g of fat). Although the PUFAs content in thigh muscles was higher, the n-3 FAs/n-6 FAs ratio in breast muscles (1:9.25) was more favourable from a dietetic point of view than that in thigh muscles (1:10.43). It follows from the results that breast muscles characterized by the lower amount of muscle fat and a more favourable n-3 FAs/n-6 FAs ratio are dietetically more suitable for human nutrition than thigh muscles.
Ključne riječi
broiler chickens; breast and thigh muscles; the muscle fat content and quality
Hrčak ID:
71361
URI
Datum izdavanja:
28.6.2011.
Posjeta: 1.315 *