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Qualitative characteristics of meat from young bulls fed different levels of crude glycerin

Carvalho, J.R.R., Chizzotti, M.L., Ramos, E.M., Machado Neto, O.R., Lanna, D.P.D., Lopes, L.S., Teixeira, P.D., Ladeira, M.M.
Meat science 2014 v.96 no.2 pp. 977-983
body weight, bulls, fatty acid composition, intramuscular fat, lipid peroxidation, longissimus muscle, meat composition, oleic acid, saturated fatty acids
The objective was to evaluate the fatty acid profile and qualitative characteristics of meat from young bulls fed crude glycerin. Forty-four animals with an initial live weight of 368±4kg were used in a completely randomized design, with four treatments: no glycerin or addition of 6, 12 or 18% glycerin. The animals were slaughtered with 519.5±14.9kg of live weight. The meat characteristics assessed were chemical composition, shear force, fatty acid concentration, color and lipid oxidation. The addition of glycerin increased the content of ether extract (P<0.05) in the muscle. A linear increase was observed (P<0.05) in the oleic acid contents (C18:1 cis 9). The saturated fatty acid (SFA) contents linearly decreased in the muscle as a function of glycerin addition. The lightness (L*) and yellowness (b*) indices increased with the use of crude glycerin (P<0.05). The crude glycerin increased the intramuscular fat and oleic acid content in the longissimus dorsi muscle.