International Journal of Innovative Approaches in Agricultural Research
Abbreviation: IJIAAR | ISSN (Online): 2602-4772 | DOI: 10.29329/ijiaar

Original article    |    Open Access
International Journal of Innovative Approaches in Agricultural Research 2018, Vol. 2(4) 359-374

Carcass and Meat Composition in F1 Crosses of Two Lines of Slow-Growing Chickens Reared in Conventional or Alternative System with Access to Pasture

Evgeni Petkov, Teodora Popova & Maya Ignatova

pp. 359 - 374   |  DOI: https://doi.org/10.29329/ijiaar.2018.174.9

Published online: December 17, 2018  |   Number of Views: 161  |  Number of Download: 864


Abstract

The study was carried out to compare the carcass quality, meat chemical composition and its fatty acid profile in two slow-growing crosses obtained from La Belle (LB) and Bresse Gauloise (BB) parents, reared in conventional or alternative system with pasture access.  At the age 12 weeks, male chickens (n=6) of each cross were slaughtered. Two-way ANOVA was used to assess the effect of the rearing strategies as well as the crossbreed on the carcass quality and meat chemical and fatty acid composition. The live and carcass weight of both crosses, as well as the dressing percentage were influenced mostly by the rearing system, showing advantage of the indoors grown birds. Despite the reduced values of these parameters, no deposition of abdominal fat was detected in the pastured birds from both crosses, which is a positive influence of the outdoors system observed in the particular crosses. In regard to the chemical composition of the meat, the pasture access decreased the protein content in both breast and thigh meat (P<0.001) but increased the moisture (P<0.001). The cross and the rearing system had different effect on the fatty acid composition of the meat and the related lipid indices, associated with its dietetic quality. While the thigh meat was mostly affected by the cross of the chickens, showing higher content of monounsaturated fatty acids (MUFA) (P<0.01) but lower in polyunsaturated fatty acids (PUFA) (P<0.05) in the ♂BBx♀LB birds, the fatty acid of the breast meat, showed different response according to the crossbreed and the rearing system. The differences were more pronounced in the ♂LBx♀BB, indicating certain advantage of the pastured chickens from this cross with lower content of saturated fatty acids (SFA) but higher of PUFA and improved values of the polyunsaturated/saturated fatty acids (P/S) and n-6/n-3 PUFA ratios.

Keywords: Crossbred slow-growing lines, Pasture access, Carcass quality, Meat chemical composition, Fatty acid profile


How to Cite this Article

APA 6th edition
Petkov, E., Popova, T. & Ignatova, M. (2018). Carcass and Meat Composition in F1 Crosses of Two Lines of Slow-Growing Chickens Reared in Conventional or Alternative System with Access to Pasture. International Journal of Innovative Approaches in Agricultural Research, 2(4), 359-374. doi: 10.29329/ijiaar.2018.174.9

Harvard
Petkov, E., Popova, T. and Ignatova, M. (2018). Carcass and Meat Composition in F1 Crosses of Two Lines of Slow-Growing Chickens Reared in Conventional or Alternative System with Access to Pasture. International Journal of Innovative Approaches in Agricultural Research, 2(4), pp. 359-374.

Chicago 16th edition
Petkov, Evgeni, Teodora Popova and Maya Ignatova (2018). "Carcass and Meat Composition in F1 Crosses of Two Lines of Slow-Growing Chickens Reared in Conventional or Alternative System with Access to Pasture". International Journal of Innovative Approaches in Agricultural Research 2 (4):359-374. doi:10.29329/ijiaar.2018.174.9.

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