Meat lipid profile of steers finished in pearl millet pasture with different rates of concentrate

Pesquisa Agropecuária Brasileira

Luis Fernando Glasenapp De Menezes²  Luciane Rumpel Segabinazzi²  João Restle¹  Leandro Da Silva Freitas¹  Ivan Luiz Brondani¹  Magali Floriano Da Silveira²  Rangel Fernandes Pacheco¹  Perla Cordeiro De Paula¹  Guilherme Joner¹ 

[1] ,Universidade Tecnológica Federal do Paraná Departamento de Zootecnia Dois Vizinhos PR

关键词: Pennisetum americanum;    conjugated linoleic acids;    fatty acids;    omega‑3;    tropic pasture;    wheat bran;    Pennisetum americanum;    ácido linoleico conjugado;    ácidos graxos;    ômega‑3;    pastagem tropical;    farelo de trigo;   

DOI  :  10.1590/S0100-204X2013000500012

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the meat lipid profile from Devon beef steers finished in pearl millet (Pennisetum americanum) pasture and fed at different rates of concentrate supplementary diet. Twelve steers weighing 270 kg, at 12‑month‑average initial age, were randomly distributed into three treatments: pearl millet pasture; and pearl millet pasture plus a concentrate equivalent at 0.5 or 1.0% of body weight, with two replicates. Total contents of saturated and unsaturated fatty acids, the polyunsaturated:saturated ratio and other relevant fatty acids as the vaccenic acid, conjugated linoleic acid, omega‑3, and omega‑6 were not affected by the consumption of a concentrate supplement at 0.5 or 1.0% live weight. However, the 0.5% supplementation level reduced the concentration of dihomo‑γ‑linolenic fatty acid (C20: 3 n‑6), while the 1.0% supplementation level elevated the content of docosahexaenoic (DHA) (C22: 6 n‑3) fatty acid, and the omega‑6:omega‑3 ratio in meat. Consumption of up to 1.0% energy supplementation increases the omega‑6:omega‑3 ratio in meat from Devon steers grazing on pearl millet pasture.

【 授权许可】

CC BY   
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