Corn Processing Co-products in sheep diets Buckeye Shepherds Symposium

Dr. Dan MorricalIowa State University

515-294-0847morrical@iastate.edu

Corn Processing Co-products in sheep diets

Buckeye Shepherds Symposium

ReferencesDr. M’s web pagehttp://www.ans.iastate.edu/faculty/index.php?id=morrical

Byproduct feed prices http://agebb.missouri.edu/dairy/byprod/bplist.asp

What products are available

Corn gluten feedwet or dry

Corn gluten mealDried distillers grainsModified 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*

CGF DDGS CORN

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

Corn Processing Co-products*Bran Germ DDGHP

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

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%

CP 13.1%

TDN 72.4%

Ca .77%

P .46%

Ca:P 1.67:1

Cost Comparison, 13% CPCorn $4.50Protein $450 CGF $150

Cost $169/t

89% of standardper lamb $4.75per ewe $7.13

84:16 corn Protein pellet

cost $188

ISU CGF Study 1995Corn Corn Prot. Gluten

Lamb Gain* .88 .70Feed intake 3.6 3.5Feed Conversion* 4.1 5.0Cost/ton 162 129Feed 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%

CP 13.0%

TDN 72.4%

Ca .78%

P .47%

Ca:P 1.67:1

Byproducts in Ewe Rations

Fit best with low quality roughage sources

Example: Cornstalks and CGF

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%

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

DDGS5 pounds alfalfa2 pounds DDGS 1 pound cracked corn

Isocaloric but not isonitrogenous

Control Diet 5 lbs. alfalfa hay

(19.6 CP, 63TDN)

3.2 pounds whole cornDDGS

5 pounds alfalfa2 pounds DDG 1 pound cracked

cornIsocaloric but not isonitrogenous

Color Extremes of DDGS

High Quality,Highly DigestibleDDGS

Lower Quality,Less DigestibleDDGS

Results 02

Lamb

Gains CornDDGS

Twins .73 .70

Trips .64 .63

Results 03

Lamb

Gains CornDDGS

Twins .76 .75

Trips .56 .63

Results 03

EweGains Corn DDGStwins -7.8 -5.6trips -12.0 -12.8

Condition scoretwins -.1 -.17trips 0.0 +.07

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