Wheat DDGS Feed Guide - Western Canadian Feed Innovation ...

Ethanol plants in Canada commonly use a blend of grains to produce ethanol. The ratios of corn and wheat in the
feed stock are likely the greatest source of variation in wheat DDGS. Researchers at the University of Manitoba (B.A.
Slominski, A. Rogiewicz, M. Nyachoti, K. Wittenberg) have studied the impact of corn/wheat ratio on the nutritive
value of wheat DDGS for swine and poultry. Tables 1-4 show the impact of changing this ratio on the DDGS nutrient
composition based on their research. Table 4 contains equations that can be used to calculate the nutrient content
of DDGS based on the proportion of wheat and corn used to generate the DDGS product.
Amino Acid
Wheat
DDGS Wheat/Corn DDGS Corn DDGS
50/50 30/70
Argine 82.7 76.5 77.2 82.7
Histidine 76.1 68.9 71.9 76.0
Isoleucine 79.3 69.8 73.7 76.0
Leucine 83.3 81.3 83.4 85.7
Lysine 59.0 51.2 55.4 62.7
Methionine 81.2 71.0 74.7 81.3
Cystine 77.5 55.1 65.7 72.4
Phenylalanine 85.4 82.6 82.9 83.2
Tyrosine 93.9 86.9 88.0 89.0
Threonine 70.7 68.3 62.4 68.3
Valine 78.2 76.6 74.3 75.6
Source: B.A. Slominski, A. Rogiewicz, M. Nyachoti, K. Wittenberg, 2010.
TABLE 4. Equations to calculate the approximate nutrient content of
corn/wheat DDGS based on the proportion of wheat in the product
(8% moisture basis).
Component Equation R 2
Crude Protein (%) % wheat grain x 0.0869 + 28.775 0.93
Non-Phytate P (%) % wheat grain x 0.0021 + 0.6196 0.74
AMEn (kcal/kg) % wheat grain x (-3.67) + 2902.8 0.95
TMEn % wheat grain x (-3.0506) + 3205.2 0.99
Source: B.A. Slominski, A. Rogiewicz, M. Nyachoti, K. Wittenberg, 2010.
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NUTRIENT COMPOSITION