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Improving the use of sorghum distillers grains in beef cattle diets

SICNA 29 Aug 2013 – Lubbock TX. Improving the use of sorghum distillers grains in beef cattle diets. Jim MacDonald, PhD, PAS. Status of sorghum distillers grains in beef cattle scientific literature. Owens, 2008. Does Grain Type Influences WDGS?. 100% Corn . 100% Sorghum.

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Improving the use of sorghum distillers grains in beef cattle diets

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  1. SICNA 29 Aug 2013 – Lubbock TX Improving the use of sorghum distillers grains in beef cattle diets Jim MacDonald, PhD, PAS

  2. Status of sorghum distillers grains in beef cattle scientific literature Owens, 2008

  3. Does Grain Type Influences WDGS? 100% Corn 100% Sorghum

  4. Nutrient profile of sorghum and corn Source: Dairy One Feed Library

  5. Does grain type influences nutrient profile? Solubles may have varied considerably

  6. Effect of Corn Processing and NDF Content on the Digestibility of WDGS Ruminal DM Digestiblity, % Interaction (P = 0.60) Assumes kp = 0.05/hr DRC vs. SFC (P = 0.73) CWDGS vs. SWDGS (P < 0.01) (Lewis et al, 2009. J. Anim. Sci. 87E-Suppl. 3:40 (Abstr.)).

  7. Relationship of NDF and Energy in WDGS (JC MacDonald, unpublished).

  8. Strategies to Improve Fiber Digestibility

  9. Titration of limestone on the pH of wet distillers grains

  10. Effect of buffer and enzyme on fiber content and pH Means within row with different superscripts differ (P < 0.05).

  11. Effect of buffer and enzyme on digestibility parameters

  12. Effect of buffered enzymes on rumen digestibility

  13. Effect of buffered enzyme on rumen ADF digestibility

  14. Summary of Laboratory Work • Enzymes solubilize fiber • Remaining fiber has similar digestibility • Greater overall digestion

  15. Animal performance and digestion

  16. Nutrient profile of WDGS fed to growing steers

  17. Effect of buffered enzyme on performance of growing steers

  18. In Vivo Digestibility Estimates

  19. Summary of buffered enzyme work • Buffered enzymes showed promise in vitro • Animal trial do not support improved performance • Animal performance trial • In vivo digestion trial

  20. Effects of NaOH on in vitro digestibility % Digestibility 15% increase in fiber digestibility % NaOH (JC MacDonald, unpublished).

  21. Acknowledgements Funding Research Team Dr. Ted McCollum Dr. N. Andy Cole Dr. Jhones Sarturi Dr. Christian Ponce Jodi Patterson Beverly Clark Casey Brauer Stacey Butler Robby Bondurant • United Sorghum Checkoff • Texas Corn Producers Board • Biozyme Incorporated • USDA-ARS • Texas State Distillers Grains Initiative

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