The changes of fatty acids composition in beef of charolaise bulls slaughtered at different weight

Abstract

FILIPČÍK, R., ŠUBRT, J., DUFEK, A., DRAČKOVÁ E.: The changes of fatty acids composition in beef of charolaise bulls slaughtered at diff erent weight. Acta univ. agric. et silvic. Mendel. Brun., 2011, LIX, No. 6, pp. 135-140 The aim of this work was to evaluate a slaughter weight infl uence (500-580; 581-640; 641-700 kg) of Charolaise bulls on intramuscular fat content and fatty acid profi le in musculus longissimus thoracis (MLT). The beef samples from 144 bulls were used to be evaluated. Statistically evidential (P < 0.05) diff erences in the intramuscular fat proportions (1.14 < 1.54 < 1.76%) in MLT samples were proved at all the weight categories of bulls. The highest average proportional ratio was determined in palmitic acid (C16:0), that ranged from 23.75% in bulls at 500-580 kg weight category to 24.79 % at 641-700 kg weight group. The lowest ratio of MUFA was in eicosapentaeonic acid (C20:1), its content ranged from 0.36% in the third weight group to 0.53% in 500-580 kg weight group. The highest MUFA ratio was in oleic acid (C18:1) at amount of 39.64% with diff erence ± 2.932%. The oleic acid ratio in beef rose up linearly according to the higher slaughtering weight (P < 0.01). Positive relation was proved between a slaughter weight and C18:3 a C22:5 PUFA content. The decrease of eicosapentaeonic and eicosadienoic acid was negative due to the essentiality for human health.

An investigation of slaughter weight and muscle type effects on carcass fatty acid profiles and meat textural characteristics of young Holstein Friesian bulls

“…HSW group had the highest C18:0 and C16:0 contents while LSW had the lowest, and the differences were statistically significant ( P < 0.05 and P < 0.01). The results are in accordance with data of Moreno et al [ 4 ] and Filipčík et al [ 8 ] who noted an increase in palmitic and stearic acids as slaughter weight increased.…”

“…Although the effects of slaughter weight on the content of palmitoleic and oleic acid were statistically insignificant in the current research, the highest percentages of these fatty acids were obtained from the LSW group. The results were in harmony with the results of Şahin et al [ 5 ], Hollo et al [ 25 ] and Filipčík et al [ 8 ] also stated a decrease in the C16:1 content with increased slaughter weight in Holstein and Charolaise cattle. However, Nogalski et al [ 26 ] stated that oleic acid levels raised with the increasing of the slaughter weight.…”

“…SFAs containing stearic acid (C18:0) and palmitic acid (C16:0) had the highest percentages. Likewise, Filipčík et al [ 8 ] noted that stearic acid and palmitic acid were the predominating SFAs in the intramuscular fatty acid pool. HSW group had the highest C18:0 and C16:0 contents while LSW had the lowest, and the differences were statistically significant ( P < 0.05 and P < 0.01).…”

“…The most important long-chain polyunsaturated fatty acids are C18, C20 and C22. These long-chain and polyunsaturated fatty acids have a significant effect on biochemical and physiological changes in the body and are known to be essential for healthy nutrition and the human body [ 8 , 9 ]. Additionally, decrease of saturated fatty acids and total fat intake and rising hypocholesterolemic/hypercholesterolemic ratios, PUFA/SFA in human nutrition are recommended by health organizations since they decrease cholesterol levels, as well as low-density lipoprotein (LDL) loading, thereby protecting heart and vascular health [ 10 ].…”