Growth and carcass fatty acid composition of beef steers fed soybean oil for increasing duration before slaughter |
| |
Authors: | PA Ludden O Kucuk DC Rule BW Hess |
| |
Affiliation: | 1. Department of Animal Science, University of Wyoming, 1000 E University Ave, Laramie WY 82070, USA;2. Department of Animal Nutrition and Nutritional Diseases, School of Veterinary Medicine, Erciyes University, Kayseri 38090, Turkey |
| |
Abstract: | 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. |
| |
Keywords: | Beef Conjugated linoleic acid Soybean oil trans-Vaccenic acid |
本文献已被 ScienceDirect 等数据库收录! |
|