Table 2.
Analyzed isoflavone, saponin, and amino acid concentrations of experimental ingredients (as-fed basis)
| Item | Ingredient | ||
|---|---|---|---|
| SPC1 | ETSBM2 | ISF3 | |
| Isoflavones, mg/kg | |||
| Total genistein | 0.00 | 908 | 177,317 |
| Total daidzein | 0.00 | 1,314 | 201,902 |
| Total glycitein | 0.00 | 196 | 22,983 |
| Total isoflavones | 0.00 | 2,417 | 402,203 |
| Total saponins, mg/kg | 1,313 | 3,656 | – |
| Total amino acids, % | |||
| Indispensable | |||
| Arginine | 4.89 | 3.91 | 0.12 |
| Histidine | 1.71 | 1.36 | 0.04 |
| Isoleucine | 3.29 | 2.54 | 0.06 |
| Leucine | 5.28 | 4.14 | 0.07 |
| Lysine | 4.30 | 3.29 | 0.06 |
| Methionine | 0.92 | 0.73 | 0.02 |
| Phenylalanine | 3.44 | 2.74 | 0.20 |
| Threonine | 2.55 | 2.09 | 0.05 |
| Tryptophan | 0.96 | 0.75 | 0.33 |
| Valine | 3.41 | 2.65 | 0.06 |
| Dispensable | |||
| Alanine | 2.84 | 2.34 | 0.07 |
| Aspartic acid | 7.43 | 5.97 | 0.20 |
| Cysteine | 0.89 | 0.72 | 0.07 |
| Glutamic acid | 12.41 | 9.80 | 0.34 |
| Glycine | 2.83 | 2.28 | 0.08 |
| Proline | 3.50 | 2.76 | 0.12 |
| Serine | 2.92 | 2.46 | 0.04 |
| Tyrosine | 2.32 | 1.95 | 0.17 |
1Soy protein concentrate (SPC) manufactured by traditional process to remove soluble sugars and reduce anti-nutritional factors; ADM Foods & Wellness, Decatur, IL.
2Enzyme-treated soybean meal (ETSBM) manufactured for piglet feed with a low content of antinutritional factors (trypsin inhibitors, antigens, and flatulent oligosaccharides); Hamlet Protein, Findlay, OH.
3Novasoy 400 (ISF) has a guaranteed 40% minimum total isoflavone concentration (referred to as suppl. ISF in subsequent tables); ADM, Decatur, IL. Diets were formulated to contain ISF concentrations similar to those observed in typical weaning commercial diets containing SBM.