Energy Status of Steers Dictates Effectiveness of Glycerol Inclusion in High-Roughage and High-Concentrate Feedlot Diets

Author

Erin M. Rife

Document Type

Thesis - Open Access

Award Date

2015

Degree Name

Master of Science (MS)

Department / School

Animal Science

First Advisor

Robbie Pritchard

Keywords

cattle, concentrate, energy, glucose, glycerol, roughage

Abstract

The objective of this research was to determine how to use glycerol as an effective source of energy in ruminant diets. Steer calves were used in a 56 d backgrounding study (n=128; Initial BW=340 ± 15 kg) and 105 d finishing study (n=120; Initial BW=420 ± 20 kg). Dietary treatments during backgrounding included 0, 8, 16, and 24% glycerol replacing corn silage in corn silage-based diets. Steers continued on within relative levels of dietary glycerol with finishing diets consisting of 0, 5, 10, and 15% glycerol replacing corn. Cumulative DMI, ADG, and G:F increased linearly (P

Library of Congress Subject Headings

Beef cattle -- Feeding and feeds
Glycerin

Description

Includes bibliographical references (pages 64-69)

Format

application/pdf

Number of Pages

80

Publisher

South Dakota State University

Recommended Citation

Rife, Erin M., "Energy Status of Steers Dictates Effectiveness of Glycerol Inclusion in High-Roughage and High-Concentrate Feedlot Diets" (2015). Electronic Theses and Dissertations. 3.
https://openprairie.sdstate.edu/etd/3