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Applied Poultry Nutrition

Applied Poultry Nutrition. M.E. Persia Iowa State University. What Do We Really Feed Poultry?. Grains:. Byproduct meals:. Corn Contains Anti-nutrients. Nonstarch Polysaccharides ( Meng and Slominski , 2005) 7.6% total 0.6% water soluble Phytate ( Hidvegi and Lasztity , 2003 )

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Applied Poultry Nutrition

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  1. Applied Poultry Nutrition M.E. Persia Iowa State University

  2. What Do We Really Feed Poultry? Grains: Byproduct meals:

  3. Corn Contains Anti-nutrients • Nonstarch Polysaccharides (Meng and Slominski, 2005) • 7.6% total • 0.6% water soluble • Phytate (Hidvegi and Lasztity, 2003) • 1.0%

  4. P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- P- Indirect Consequences of Phytate • Traditional mechanism • Ca/phytate complex • chelates protein and • digestive enzymes Ca++ Zn++ Cu+ Ca++ Ca++ Ca++ = Digestive enzyme Ca++ Ca++ Ca++ = Protein Fe++

  5. Calcium and pH on phytate solubility pH 6.5 5.5 4.5 3.5

  6. Solution: Phytase Results at 49 days Diet formulated with reduced phosphorus, calcium, amino acids and energy Parr and Wyatt, 2006

  7. DDGS Contains Anti-nutrients • Nonstarch Polysaccharides (Villamide et al., 1997) • 19.1 – 22.0% total • 0.0 – 2.1% water soluble • Phytate (NRC, 1994) • 0.7%

  8. Discussion Question Why would corn have more phytate than DDGS?

  9. Soybean Meal Contains Anti-nutrients • Nonstarch Polysaccharides (Meng and Slominski, 2005) • 13.7% total • 1.3% water soluble • Phytate (NRC, 1994) • 1.40% • Raffinose • 1.9% • Stachyose • 5.2%

  10. Barley Contains Anti-nutrients • Nonstarch Polysaccharides (Villamide et al., 1997) • 10.2 – 19.9% total • 3.3 – 4.4% glucans • Phytate (NRC, 1994) • 0.9%

  11. Wheat Contains Anti-nutrients • Nonstarch Polysaccharides (Gutierrez del Alamo et al., 2008) • 9.8 – 11.2% total • 1.3 – 2.4% water soluble • Phytate (NRC, 1994) • 0.8%

  12. Solution – treatment with enzymes

  13. Soybeans Contain Anti-nutrients • Trypsin Inhibitor

  14. Relationship with CCK • Soybean trypsin inhibitor enhanced CCK release into circulation in a dose-dependent fashion.

  15. Gross Effects • Performance

  16. Solution: Heat treatment • Trypsin Inhibitors are heat labile • Heat treatment of soybean meal • Drive off oil extraction medium • Dry soybean meal • Destroy Trypsin Inhibitors • Caution: too much heat has negative effects on protein digestibility

  17. Maillad Reactions (Browning) IngredientLysine Digestibility Corn 92% Wheat 86% Soybean meal (SBM) 90% DDGS 75% M and B meal 81% Lysine HCl 100% Moisture and Heat Intermediate reaction products Late reaction products

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