Dr. Mary Lou Swift Field Crop Development Center, Lacombe ABDepartment/deptdocs... · Dr. Mary Lou...

Dr. Mary Lou SwiftField Crop Development Center, Lacombe AB

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CommodityNot used by malting/food industryEnd users price as commodityenergy cost per kg product produced; Few wet chemistry laboratories Turnover time, cost, blendingBook values for nutritional composition

Helm et al., 2000

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$40 per tonne

Hulled Barley Hulled Barley + Enzyme

*Scale 1.0 to 2.5

Feed Quality Evaluation/NIRS Project300 Samples each of 6 products

Animal (In-vivo) and In-vitro Measurements

BARLEY WHEAT PEASCANOLA

MEALDISTILLERS

GRAINSWHEAT

BYPRODUCT

•DE•NE

•Starch•Fiber

•AME •Proximates•AA•Physical

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DEFINE FEED VALUE! Develop robust, timely, inexpensive ways to predict/estimate feed value

Work with industry leaders to use these predictors of feed value in formulation systems

Develop rapid method to “estimate the estimate”

M.L. Swift1*, L. Oatway1, R. T. Zilstra2, W. C. Sauer2,

and J. H. Helm1

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Apparent Total Tract Digestibility (ATTD) Energy◦ 39 Hulled (+21)◦ 16 Hulless◦ Barrows (~33 kg)◦ 96% barley diet

In-vitro Assay◦ 3 step enzymatic◦ Pepsin 6 h◦ Pancreatin 18 h◦ Cellulase 24 h

Physical, Chemical◦ TW, KW, % Plump◦ CP, Starch, Lipid,

Ash, Dietary Fiber, B-Glucan, Pentosan

(Regmi et al., 2008. JAS 86:2619)

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ATTD-H IVED-H IVEDC-H ATTD-HB IVED-HB IVEDC-HB

Perc

ent

Correction Y=1.23x-25.33 (x=In vitro value)

Physical◦BW, TW, Plumpness

ProximatesNutrient Degradation◦Dry Matter (DMD)◦Starch◦Fiber (ADF, NDF)

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Time (h)

6th Canadian Barley Symposium July 25-28, 2010 14

Whole plant barley NDF digestibility and its relationship with chemical constituents and DM yield

M.L. Swift*1, M. Oba2, P. E. Juskiw1 and J. H. Helm1

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H2R H6R HB2R HB6R