1 / 27

Corn Ethanol Co-Products For Finishing Beef Cattle

Learn about the benefits and challenges of using various types of corn co-products for finishing beef cattle, including nutrient composition, feeding strategies, and economic considerations.

ramiron
Download Presentation

Corn Ethanol Co-Products For Finishing Beef Cattle

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Corn Ethanol Co-Products For Finishing Beef Cattle Darrell R. Mark, University of Nebraska–Lincoln Galen Erickson, University of Nebraska–Lincoln Crystal Buckner, University of Nebraska–Lincoln

  2. Types of Corn Co-Products • Corn gluten feed: wet mill • Corn bran + steep • Can be wet or dry • Moderate crude protein, CP = 16-23% • 80% of CP is DIP (ruminally degradable) • Low fat, moderate fiber, TDN = 80 • 101-115% of energy value of dry-rolled corn • Product variation is significant within and across plants due to amount of steep added back to the corn bran

  3. Types of Corn Co-Products • Distillers Grains + Solubles: dry mill • Distillers Grains (65%) & Solubles (35%) (DM basis) • May be wet or dried • Higher crude protein, CP = 30% • 65% UIP (undegraded, “bypass”, protein) • High fat (11%), TDN = 70-110 • Concentrates nutrients 3-fold from corn • 0.8% P, 0.35-1.0% Sulfur (variable)

  4. Types of Corn Co-Products • Condensed distillers soluables: dry mill • Also known as “syrup” • 35% dry matter but in liquid form • Higher crude protein, CP = 26% • High fat, low fiber, TDN = 110-115 • Modified DGS are available • (35-65% DM) • Hybrid wet & dry plant combining corn bran and distillers solubles  bran cake • Example: Dakota Bran Cake

  5. Nutrient Composition of Selected Corn Milling Co-Products

  6. General Corn Co-Products Cattle Finishing Comments • High energy & protein • Helps control acidosis (no starch in co-products) • May be able to feed less (or lower quality) roughage • Inclusion rate may depend on corn processing method • High variation in feeding value/composition of co-products presents challenge for feeding • WDGS results in better performance than DDGS

  7. Energy Value of WDGS vs DDGS Fed at 40% of Diet DM

  8. Energy Content of WDGS y = -0.96x + 167 R2 = 0.32

  9. Feed Efficiency & ADG Response To WDG Inclusion Rate Source: Vander Pol et al., 2006 Nebraska Beef Rep. and 2005 Midwest ASAS

  10. Feed Efficiency & ADG Response To DDG Inclusion Rate Source: Buckner et al., 2007 Nebraska Beef Rep.

  11. Economic Issues Associated With Feeding Ethanol Co-Products • Performance improvements from feeding WDGS & WCGF at 30-40% dietary inclusion hedges against corn price increases • Cattle biological response to WDGS is quadratic and response to WCGF is linear • Feeding wet co-products leads to: • Increased trucking cost to feedyard • Increased feeding/handling cost within feedyard • Fewer days on feed (less yardage/interest cost)

  12. Inputs Dietary ingredients (DM, inclusion, price) Cattle performance (DMI, feed conversion) Trucking distance, size, cost Yardage, processing/health, interest rate Outputs ADG & DOF Total Costs Yardage Ration Feeding expense Co-product hauling Net Return Return to co-product feeding Cattle Feeding Budget Model With WDGS & WCGF

  13. Example • Feeder cattle in-weight 740 lbs • Fed cattle out-weight 1300 lbs • Days on feed 153 days • DMI 24 lbs • Feed:Gain 6.5 lbs/lb • Yardage cost $0.35/hd/day • Trucking $3.00/loaded m • Corn price $2.76/bu • WDGS price 95% of corn price (DM basis)

  14. Marginal Return to WDGS Feeding with Varying Corn Prices -$91.67 -$143.19 -$195.41 -$247.62 Distance at 60 miles

  15. Marginal Return to WDGS Feeding with Varying Distances to Plant -$143.19 Corn at $3.50/bu

  16. Marginal Return to WDGS Feeding with Varying WDGS Prices Relative to Corn -$143.19 Corn at $3.50/bu Distance at 60 miles

  17. Marginal Return to WCGF Feeding with Varying Corn Prices -$91.67 -$143.19 -$195.41 -$247.62 Distance at 60 miles

  18. Budget Model Summary • Model accounts for growth biology and changing prices • At 30% inclusion rate of WDGS, marginal return most impacted by corn price • Distance from plant and hauling cost not as important • Can evaluate the marginal benefit to multiple co-products

  19. To Feed More Co-Product • More ethanol production  need to feed more co-products • More than 40% WDGS may add too much fat and sulfur to the diet • Possibility: Feed combinations of WDGS & WCGF

  20. WCGF & WDGS Combination Feeding Trial Source: Buckner et al., 2006

  21. WCGF & WDGS Combination Feeding Trial P< 0.05 Source: Buckner et al., 2006

  22. Challenges • DGS is most available in late summer • Seasonally cheapest then too • Seasonally fewest cattle on feed then too • Storing wet DGS product • Material exposed to air spoils in 7-14 days depending on temperature • Has low pH and does not ensile but will keep in air-tight storage for long periods • Spoilage loss stored in silage bags (Walker et al) • 20% loss opened and fed day 78-112 post-sealing • 28% loss opened and fed day 190-257 post sealing

  23. Seasonal Low in Cattle on Feed… Cattle on Feed, All States, 1000+ Head Feedyards Thousand Head 13,000 12,000 11,000 10,000 9,000 2005 8,000 2006 7,000 5 Yr Ave 6,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Source: USDA Month

  24. When WDGS Price Is Lowest Seasonal Index of Dried Distillers Grains, Nebraska, 2003-2005 Price Index (% of Annual Avg) 160.00 Seasonal Price Index Seasonal Price Index + 1 Std Dev 140.00 Seasonal Price Index - 1 Std Dev 120.00 100.00 80.00 60.00 40.00 Oct Apr Jan Mar Feb Jun Sep Nov Dec May Aug July Source: AMS & University of Nebraska-Lincoln Month

  25. Storing WDGS • Storing wet DGS product • Often delivered in truck load lots • Can store wet DGS in bunker, silage bag or in pile covered with plastic to protect from air • Can mix with tub-ground forage and stored in bunker or bag • Have to have the “mix” right…

  26. Minimum Levels of Roughage To Mix in WDGS For Storage Bagginga Bunker Grass hay 15% 30-40 Wheat straw 12.5 25-32 Alfalfa hay 22.5 45-55? DDGS 50 --- ADMCGF 60 --- a300 PSI. Source: Erickson & Klopfenstein

  27. Resources • http://beef.unl.edu • www.iowabeefcenter.org • http://www.ddgs.umn.edu/

More Related