Dr. Dan Morrical Iowa State University Corn Processing Co-products in sheep diets Buckeye Shepherds Symposium

References Dr. M’s web page Byproduct feed prices

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

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

Nutrient Content Reduced starch equals Increased protein and mineral density

Corn Processing Co-products* CGFDDGSCORN DM90%90%87% TDN 72% 80%77% CP 18%27%8.5% Ca.05%.20%.02% P 1.0%.72%.35% * As fed basis

Corn Processing Co-products* BranGermDDGHP DM92*%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% Fat7.5%17.9%3.0% * As fed basis

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

Example ration Corn 73.5% Prot. Pel. 10% CGF 15% Limestone 1% Salt.5% DM 88% CP13.1% TDN72.4% Ca.77% P.46% Ca:P1.67:1

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

ISU CGF Study 1995 Corn Prot.Gluten Lamb Gain* Feed intake Feed Conversion* Cost/ton Feed cost of gain $33.21$32.25

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

Example ration Corn 80% Prot. Pel. 10% DDGS 8.5% Limestone 1% Salt.5% Cost $168 DM 88% CP13.0% TDN72.4% Ca.78% P.47% Ca:P1.67:1

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

Example rations Feed EGLGLact. Cornstalks49.7%46.5%21% WDDGS49.7%46.5%42% Alfalfa21% Corn6.5%10% SBM5% Limestone.6%.5%.5%

DDGS Better protein quality higher escape protein ? ISU Research

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

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

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

Results 02 Lamb GainsCornDDGS Twins Trips.64.63

Results 03 Lamb GainsCornDDGS Twins Trips.56.63

Results 03 Ewe GainsCornDDGS twins trips Condition score twins trips

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

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

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

Questions