Metabolism Characteristics of Feedlot Diets Containing Different Fat Sources

Authors

Virgil R. Bremer, University of Nebraska-LincolnFollow
Kelsey Rolfe, University of Nebraska-LincolnFollow
Crystal D. Buckner, University of Nebraska-LincolnFollow
Galen E. Erickson, University of Nebraska-LincolnFollow
Terry J. Klopfenstein, University of Nebraska-LincolnFollow

Date of this Version

2010

Comments

Published in 2009 Nebraska Beef Cattle Report (Lincoln, NE: December, 2008). Copyright © 2008 The Board of Regents of the University of Nebraska.

Abstract

A metabolism trial was conducted to evaluate the effects of dietary fat source on the metabolism characteristics of feedlot steers fed 8.5% fat (7% fatty acids) diets. Steers fed condensed corn distillers solubles (CCDS) had lower average pH and greater DM digestibility than those fed corn oil, tallow, or WDGS. Steers fed CCDS also had greater fat and fatty acid digestibility than corn and corn oil fed steers and greater NDF digestibility than corn oil or tallow fed steers. Although CCDS fat is similar to corn oil, the two feeds are digested differently. The omasal fatty acid profile of steers fed WDGS is less saturated than cattle fed corn diets with or without corn oil, CCDS, or beef tallow. In addition, the efficiency of fat and fatty acid absorption was not decreased with high fat feedlot diets.