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United States Department of Agriculture

Agricultural Research Service

Title: Effects of wet distiller's grains plus solubles concentration in steam-flaked corn-based finishing diets on performance and carcass characteristics of beef steers

Author
item Luebbe, Matt
item Davis, T.
item Jenkins, Karla
item Mccollum, F. Ted
item Cole, Noel
item Macdonald, Jim

Submitted to: Journal of Animal Science Supplement
Publication Type: Abstract Only
Publication Acceptance Date: 5/7/2010
Publication Date: 7/12/2010
Citation: Luebbe, M.K., Davis, T.C., Jenkins, K.H., McCollum, F., Cole, N.A., Macdonald, J.C. 2010. Effects of wet distiller's grains plus solubles concentration in steam-flaked corn-based finishing diets on performance and carcass characteristics of beef steers [abstract]. Journal of Animal Science Supplement. 88:E-Supplement 2, Paper 201. p. 231.

Interpretive Summary:

Technical Abstract: Six hundred crossbred steers (365 + -35 kg) were used in a randomized complete block design to determine effects of a corn- and sorghum-based (< 15% sorghum) wet distiller's grains plus solubles (WDG) on animal performance and carcass characteristics in steam-flaked corn (SFC) based diets. Forty-eight pens were utilized resulting in 8 replications per treatment. Wet distiller's grains (0, 15, 30, 45, and 60% dietary inclusion; 0WDG, 15WDG, 30WDG, 45WDG, and 60WDG, respectively) replaced cottonseed meal, supplemental fat (yellow grease), urea, and SFC. Additionally, a dry-rolled corn control diet (DRC) was included. Dietary fat was set at a minimum of 6.5% with supplemental fat from yellow grease. Alfalfa hay was included at 10% of diet DM. Contrasts included DRC vs. SFC, and linear and quadratic effects of WDG concentration. Final BW, ADG, G:F, HCW, and fat depth were greater (P<= 0.05) for SFC than DRC. Dry-matter intake tended (P = 0.06) to be greater for DRC than SFC. Marbling score, dressing percent, and LM area were not different (P > 0.40) for DRC and SFC. Final BW, ADG, HCW, fat depth, and marbling score decreased linearly (P < 0.01) with WGDS inclusion level. Gain efficiency and DMI responded quadratically (P < 0.01) across WDG inclusion levels. Dressing percent tended to decrease linearly (P = 0.07) with WDG level and LM area was not different (P = 0.31) across WDG inclusion levels. Feeding SFC improved animal performance and carcass characteristics compared with DRC. The relative energy content of WDG in SFC-based diets appears to dilute the energy density of the diets and negatively impacts animal performance.

Last Modified: 10/16/2017
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