Fatty acid profile in the breast and thigh muscles of the slow- and fast-growing birds under the same management system

Abstract

The aim of the study was to assess the effect of feeding the same diet to different breeds of chickens and at different ages on fatty acid (FA) composition of the breast and thigh muscles. A total of 150 chickens comprising 50 each of red jungle fowl (RJ) and village chicken (VC), the slow-growing birds, and the commercial broiler (CB), fast-growing birds, were used for this study. Ten chickens from each breed were serially euthanized at days 1, 10, 20, 56, and 120 post hatch, and pectoralis major and bicep femoris were harvested to represent the breast and thigh muscles respectively. It was revealed that the breast muscle concentrations of saturated fatty acids (SFA), monounsaturated fatty acids (MUFA), and total polyunsaturated fatty acids (PUFA) are significantly different (p<0.05) among the breeds. Also, the FA composition of breast and thigh muscles among RJ, VC, and CB at various ages studied varied significantly (p<0.05) but without a definite pattern. The composition of MUFA was lower, but that of PUFA was higher in the RJ and VC than in the CB breast muscles. Within the breeds, the composition of total MUFA decreased, while that of PUFA increased with age. The total MUFA and PUFA showed no significant difference (p>0.05) between the breast and thigh muscles at different ages evaluated. This study suggests that slow-growing birds (RJ and VC) might be better sources of desirable FA than the fast-growing birds, CB. KeywordsPectoralis major . Bicep femoris . Lipids . Red jungle fowl . Village chicken and broiler chickens * H. I. Lokman

Effects of Sex on the Muscle Development and Meat Composition in Wuliangshan Black-Bone Chickens

“…Also, the contents of the essential fatty acids in breast meat were higher than those in the thigh meat. These results are in agreement with those of Mahiza et al, which reported that the compositions of MUFA were lower and the compositions of PUFA were higher in slow-growing birds than in fast-growing birds [ 20 ].…”

A selected population study reveals the biochemical mechanism of intramuscular fat deposition in chicken meat

“…Therefore, we conducted an in-depth investigation of the effect of FAs on the deposition of TG, PLIP, and IMF in the selected line and control line. The results on the FA composition revealed that the long chain FAs (LCFAs), including C16:0, C18:0, C18:1n9c, C18:2n6c and C20:4n6, were more prevalent prevailing with a proportion exceeding 10% in chicken meat as previously reported [ 34 ], which can explain the 95.34% phenotypic contribution determined by PCA analysis in this study. Further, by separately isolating TG and PLIP using each eight individuals in the groups with the high- or low-IMF contents, we found that the FA composition of IMF is mainly determined by TG, not by PLIP.…”

“…It was known that LCFAs (such as C16:0, C18:0, C18:1n9c, C18:2n6c, et al) were the main FA composition of fat [ 34 ]. In this study, the proportions of LCFAs (C14:0, C16:1, C18:1n9c, C18:3n3, et al) in the selected line than those of the control line were increased, accompanied with the high positive correlations of TG and IMF.…”

The effects of plant extracts on lipid metabolism of chickens — A review

“…In the slow-growing chicken breeds, chickens have more muscle and subcutaneous fat, and the fat distribution is more even [3]. The total fat content in fast-growing chickens is greaterhigher than that in slow-growing chickens, and the fat is mainly distributed in the abdomen and on the visceral surfaces, the compositions of monounsaturated fatty acids A c c e p t e d A r t i c l e (MUFA) were lower and the compositions of polyunsaturated fatty acids (PUFA) were higher in slow-growing than fast-growing chickens [4]. The low intramuscular fat usually results in a poor meat quality [5].…”