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Dr. Dan Morrical Iowa State University 515-294-0847 morrical@iastate.edu Corn Processing Co-products in sheep diets Buckeye Shepherds Symposium
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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
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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
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Nutrient Content Must adjust for water content Dry matter may be 30% to 90% do not want to pay too much for water
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Nutrient Content Reduced starch equals Increased protein and mineral density
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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
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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
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Lamb finishing diets Concerns: Calcium:phosphorous ratio Restrict CGF to 10-15% of diet example:
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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
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Cost Comparison, 13% CP 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
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ISU CGF Study 1995 Corn Prot.Gluten Lamb Gain*.88.70 Feed intake3.63.5 Feed Conversion* 4.15.0 Cost/ton162129 Feed cost of gain $33.21$32.25
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DDGS in Lamb Rations U. Kentucky 5-10% DDGS Growth promoter Reduced intake above 10% Precautions: Calcium phosphorous ratio Fat
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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
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Byproducts in Ewe Rations Fit best with low quality roughage sources Example: Cornstalks and CGF
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Example rations Feed EGLGLact. Cornstalks49.7%46.5%21% WDDGS49.7%46.5%42% Alfalfa21% Corn6.5%10% SBM5% Limestone.6%.5%.5%
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DDGS Better protein quality higher escape protein ? ISU Research
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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
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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
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Color Extremes of DDGS High Quality, Highly Digestible DDGS Lower Quality, Less Digestible DDGS
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Results 02 Lamb GainsCornDDGS Twins.73.70 Trips.64.63
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Results 03 Lamb GainsCornDDGS Twins.76.75 Trips.56.63
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Results 03 Ewe GainsCornDDGS twins-7.8-5.6 trips-12.0-12.8 Condition score twins-.1-.17 trips0.0+.07
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Using Co-products Price Method of mixing and handling Location Shelf life/storage
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Options Split loads Work with cattle feeder Use the dry product Cheapest in summer put up bag of cornstalks and wet distillers
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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
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Questions
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