Growth and carcass fatty acid composition of beef steers fed soybean oil for increasing duration before slaughter

Duration of soybean oil (SBO) supplementation needed to enhance carcass conjugated linoleic acid (CLA) and trans-vaccenic (TVA) content was examined using 96 beef steers (293.6 ± 3.9 kg) fed a 78% corn-based diet supplemented with SBO for 0, 77, 137, or 189 days before slaughter. Duration of SBO sup...

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Bibliographic Details
Published in:Meat science 2009-06, Vol.82 (2), p.185-192
Main Authors: Ludden, P.A., Kucuk, O., Rule, D.C., Hess, B.W.
Format: Article
Language:English
Subjects:
Beef
Biological and medical sciences
Conjugated linoleic acid
Fat industries
Food industries
Fundamental and applied biological sciences. Psychology
Meat and meat product industries
Soybean oil
trans-Vaccenic acid
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Summary:Duration of soybean oil (SBO) supplementation needed to enhance carcass conjugated linoleic acid (CLA) and trans-vaccenic (TVA) content was examined using 96 beef steers (293.6 ± 3.9 kg) fed a 78% corn-based diet supplemented with SBO for 0, 77, 137, or 189 days before slaughter. Duration of SBO supplementation had no effect ( P ⩾ 0.15) on animal performance or carcass traits, nor ( P ⩾ 0.15), total, total saturated, or total polyunsaturated fatty acids of Longissimus dorsi (LD). Concentrations of CLA in LD were not affected ( P ⩾ 0.18) by SBO supplementation. Concentrations of monounsaturated fatty acids (MUFA) decreased linearly ( P = 0.03) in LD, whereas TVA increased ( P = 0.04) in adipose tissue and tended ( P = 0.07) to increase in LD with increasing duration of SBO supplementation. Supplementing SBO to a concentrate-based diet may enhance TVA without impacting CLA, while reducing the MUFA content of lean beef.
ISSN:0309-1740
1873-4138
DOI:10.1016/j.meatsci.2009.01.009