Animal Science Department

 

Date of this Version

2011

Comments

Published in 2011 Nebraska Beef Cattle Report. Published by the Agricultural Research Division, University of Nebraska Extension, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln. Copyright © 2011 The Board of Regents of the University of Nebraska.

Abstract

Cattle (n = 336; 595 ± 20 lb) were fed one of seven diets (corn/5% straw; 40% distillers grain (DG)/5% straw; 70% DG/8% straw; 70% DG/25% straw; 77.5% DG/9% straw; 77.5% DG/17% straw, and 85% DG/10% straw – DM basis) to measure effects of feeding high levels of DG on shelf life of aged beef. Except for 70% DG/25% straw, strip loins were cut into three steaks each after 20 days of postmortem aging for 0, 4, and 7 days of retail display. The treatment having 70% DG/8% straw had the greatest oxidation status. Trans fatty acids and polyunsaturated fatty acids increased significantly in the strips of cattle fed high levels of WDGS and straw. Treatments with the highest levels of DG (85% DG/10% straw) or straw (77.5% DG/17% straw) had the most discoloration and were darkest at day three and four of retail display.

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