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Metabolizable Energy of Soybean Meal. Nick Dale and Amy Batal University of Georgia Department of Poultry Science. Solvent-extracted dehulled soybean meal. Solvent-extracted soybean meal with hulls. Soybean meal contaminated with foreign material.

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Metabolizable Energy of Soybean Meal

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Metabolizable energy of soybean meal l.jpg

Metabolizable Energy of Soybean Meal

Nick Dale and Amy Batal

University of Georgia

Department of Poultry Science


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Solvent-extracted dehulled soybean meal


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Solvent-extracted soybean meal with hulls


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Soybean meal contaminated with foreign material


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Classical ME StudiesApparent metabolizable energy of soybean meals (SBM) from 1960 to 1962

SBM

Laboratory44% Protein50% ProteinDifference

kcal/kg, 88% DM

Cornell 2,195 2,474 11.8

Connecticut 2,200 2,356 6.9

Guelph 2,352 2,542 8.8

Average 2,249 2,457 9.2


True metabolizable energy with nitrogen correction tme n of dehulled soybean meal from 1987 to 1988 l.jpg

True metabolizable energy with nitrogen correction (TMEn) of dehulled soybean meal from 1987 to 1988

TMEn

____________________

LaboratorySamplesHighLowMean

________________________________________________________

no.-----kcal/kg, 88% DM---

Agriculture Canada292,6922,1872,421

Georgia102,5412,3392,438

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Design of present study

  • 23 samples of Soybean meal

  • Proximate composition

  • TMEn with 10 SCWL Roosters


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Variation in crude fat between samples is too low to be useful in prediction equation.


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Metabolizable energy is negatively correlated with crude fiber.


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Prediction Equation:Calculating ME of soybean meal from crude fiber

TMEn = 3157 – 75 (crude fiber)

(Dry matter basis), r2 = 0.61

Example: 88% Dry matter

TMEn = 2778 – 66 (crude fiber)

TMEn = 2778 – 66 (4.8)

TMEn = 2461 kcal/kg (1119 kcal/lb)


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Overprocessed soybean meal


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Effect of overprocessing on the metabolizable energy of SBM

Overprocessing has little effect on the ME of soybean meal


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