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Metabolizable Energy of Soybean Meal

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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  1. Metabolizable Energy of Soybean Meal Nick Dale and Amy Batal University of Georgia Department of Poultry Science

  2. Solvent-extracted dehulled soybean meal

  3. Solvent-extracted soybean meal with hulls

  4. Soybean meal contaminated with foreign material

  5. Classical ME StudiesApparent metabolizable energy of soybean meals (SBM) from 1960 to 1962 SBM Laboratory 44% Protein 50% Protein Difference 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

  6. True metabolizable energy with nitrogen correction (TMEn) of dehulled soybean meal from 1987 to 1988 TMEn ____________________ Laboratory Samples High Low Mean ________________________________________________________ no. -----kcal/kg, 88% DM--- Agriculture Canada 29 2,692 2,187 2,421 Georgia 10 2,541 2,339 2,438 ________________________________________________________

  7. Design of present study • 23 samples of Soybean meal • Proximate composition • TMEn with 10 SCWL Roosters

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

  9. Metabolizable energy is negatively correlated with crude fiber.

  10. 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)

  11. Overprocessed soybean meal

  12. Effect of overprocessing on the metabolizable energy of SBM Overprocessing has little effect on the ME of soybean meal

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