372
Evaluation of the Value of Fiber in Distillers Grains Plus Solubles on Performance of Finishing Cattle

Tuesday, March 15, 2016: 10:00 AM
308-309 (Community Choice Credit Union Convention Center)
Jordan E Burhoop , University of Nebraska, Lincoln, NE
Liesel J Schneider , Mississippi State University, Mississippi State, MS
C. J. Bittner , University of Nebraska, Lincoln, NE
F. H. Hilscher , University of Nebraska, Lincoln, NE
J. C. MacDonald , University of Nebraska-Lincoln, Lincoln, NE
Rodney A Moxley , School of Veterinary Medicine and Biomedical Sciences, University of Nebraska, Lincoln, Lincoln, NE
David R. Smith , Mississippi State University, Mississippi State, MS
G. E. Erickson , University of Nebraska, Lincoln, NE
Audio File Recorded Presentation (mp4)
Abstract Text:

A finishing experiment was conducted to determine the value of the fiber in distillers grains plus solubles for cattle. The experiment utilized 800 crossbred yearling steers (initial BW = 415 kg; SD = 24 kg) fed in 100 pens (8 steers/pen and one of 5 treatments (n=20 pens/treatment). Cattle were split into four blocks by starting blocks each week for four consecutive weeks. Cattle were limit fed 5 d prior to starting experiment and were weighed on day 0 and 1 for an accurate initial BW. The five treatments consisted of a corn control diet (CON), 20 (20MDGS) or 40% (40MDGS) modified distillers grains plus solubles (MDGS), plus two diets containing corn germ meal and corn bran balanced to equal the fiber content of the two MDGS diets (20FIB and 40FIB). Performance data were based on 134 d (blocks 1, 2, 3) or 148 d (block 4) and carcass data were collected at slaughter and following a 48 hr chill. Statistics were completed using the mixed procedure of SAS with pen as the experimental unit. Initial BW (P = 0.63) was not influenced by treatment. Intakes were impacted by treatment (P < 0.01) and DMI increased quadratically (P < 0.01) as MDGS increased with steers fed 20MDGS having the greatest DMI. Steers fed 40MDGS or 40FIB had similar DMI (P = 0.76), whereas steers fed 20MDGS consumed more (P < 0.01) than steers fed 20FIB. When 20FIB and 40FIB were fed, DMI increased linearly (P = 0.01) relative to CON. Dietary treatment impacted ADG (P < 0.01) with ADG increasing quadratically (P = 0.02) as MDGS inclusion increased, and equal ADG between 20MDGS and 40MDGS (P = 0.96). Feeding 20FIB and 40FIB slightly reduced ADG but not statistically (P > 0.14) compared to CON. As a result of increased ADG, G:F increased linearly (P < 0.01) for steers fed MDGS. When steers were fed 20FIB or 40FIB, G:F decreased linearly (P < 0.01) due to an increase in DMI and numerical decrease in ADG compared to CON. The feeding value (change in G:F due to MDGS inclusion) of MDGS was 107 to 108% of corn that was replaced in CON. The isolated fiber component does not give equal performance to feeding MDGS and G:F was slightly reduced if only the fiber components replaced corn.

Keywords:

Distillers grains plus solubles, Fiber, Finishing cattle

See more of: Ruminant Nutrition: By-Products
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