Corn Processing Co-products in sheep diets Buckeye Shepherds Symposium

1. Corn Processing Co-products in sheep dietsBuckeye Shepherds Symposium Dr. Dan Morrical Iowa State University 515-294-0847 morrical@iastate.edu

3. References • Dr. M’s web page • http://www.ans.iastate.edu/faculty/index.php?id=morrical • Byproduct feed prices • http://agebb.missouri.edu/dairy/byprod/bplist.asp

4. What products are available • Corn gluten feed • wet or dry • Corn gluten meal • Dried distillers grains • Modified distillers grains • Wet distillers grain • Condensed distillers solubles

5. Nutrient Content • Must adjust for water content • Dry matter may be 30% to 90% • do not want to pay too • much for water

6. Nutrient Content • Reduced starch equals • Increased protein and mineral density

7. Corn Processing Co-products* • CGFDDGSCORN • DM 90% 90% 87% • TDN 72% 80% 77% • CP 18% 27% 8.5% • Ca .05% .20% .02% • P 1.0% .72% .35% * As fed basis

8. Corn Processing Co-products* • BranGermDDGHP • DM 92*% 93.1% 91.9% • TDN 84% 102% 81.7% • CP 12.6% 15.6% 42.5% • Ca .04% .02% .01% • P .56% 1.4% .37% • Fat 7.5% 17.9 % 3.0% * As fed basis

9. Lamb finishing diets • Concerns: • Calcium:phosphorous ratio • Restrict CGF to 10-15% of diet • example:

10. Corn 73.5% Prot. Pel. 10% CGF 15% Limestone 1% Salt .5% DM 88% CP 13.1% TDN 72.4% Ca .77% P .46% Ca:P 1.67:1 Example ration

11. Corn $4.50 Protein $450 CGF $150 Cost $169/t 89% of standard per lamb $4.75 per ewe $7.13 84:16 corn Protein pellet cost $188 Cost Comparison, 13% CP

13. ISU CGF Study 1995 • Corn Corn • Prot. Gluten • Lamb Gain* .88 .70 • Feed intake 3.6 3.5 • Feed Conversion* 4.1 5.0 • Cost/ton 162 129 • Feed cost of gain $33.21 $32.25

14. DDGS in Lamb Rations • U. Kentucky • 5-10% DDGS • Growth promoter • Reduced intake above 10% • Precautions: • Calcium phosphorous ratio • Fat

15. Corn 80% Prot. Pel. 10% DDGS 8.5% Limestone 1% Salt .5% Cost $168 DM 88% CP 13.0% TDN 72.4% Ca .78% P .47% Ca:P 1.67:1 Example ration

16. Byproducts in Ewe Rations • Fit best with low quality roughage sources • Example: Cornstalks and CGF

17. Example rations • Feed EG LG Lact. • Cornstalks 49.7% 46.5% 21% • WDDGS 49.7% 46.5% 42% • Alfalfa 21% • Corn 6.5% 10% • SBM 5% • Limestone .6% .5% .5%

18. DDGS • Better protein quality • higher escape protein ? • ISU Research

19. ISU Research Lactating ewes • Control Diet • 5 lbs. alfalfa hay (19.6 CP, 63 TDN) • 3.2 pounds whole corn • DDGS • 5 pounds alfalfa • 2 pounds DDGS • 1 pound cracked corn • Isocaloric but not isonitrogenous

20. Control Diet • 5 lbs. alfalfa hay (19.6 CP, 63TDN) • 3.2 pounds whole corn • DDGS • 5 pounds alfalfa • 2 pounds DDG • 1 pound cracked corn • Isocaloric but not isonitrogenous

22. Color Extremes of DDGS Lower Quality, Less Digestible DDGS High Quality, Highly Digestible DDGS

23. Results 02 • Lamb • GainsCornDDGS • Twins .73 .70 • Trips .64 .63

24. Results 03 • Lamb • GainsCornDDGS • Twins .76 .75 • Trips .56 .63

25. Results 03 • Ewe • Gains Corn DDGS • twins -7.8 -5.6 • trips -12.0 -12.8 • Condition score • twins -.1 -.17 • trips 0.0 +.07

26. Using Co-products • Price • Method of mixing and handling • Location • Shelf life/storage

27. Options • Split loads • Work with cattle feeder • Use the dry product • Cheapest in summer • put up bag of cornstalks and wet distillers

28. Precautions • Product will set up do to high fat content • High sulfur content may result in polios, >50% DDGS diets • Stud rams and UC • Listeria

34. Questions