Effect of various soybean meal sources and avizyme on chick growth performance and ileal digestible energy

Although it is well accepted that soybean meal (SBM) is a high-quality feed ingredient for poultry, the digestibility of the dry matter and energy in SBM are quite low. One possible means for improving the digestibility of SB M is the use of enzymes. Twelve SBM, obtained from commercial processing plants in the U.S. and othe r countries, were evaluated with and without the addition of Avizyme in fou r 2-wk broiler chick assays, The analyzed values (%) of selected nutrients (mean and range) in the SBM were: CP, 45 (40 to 49); dry matter, 88 (87 to 89); lysine, 2.9. (2.57 to 3.27); methionine, 0.69 (0.60 to 0.75); cystine, 0.64 (0.60 to 0.76). KOH protein solubility (%) in the SBM (mean and range ) was 77 (71 to 83). Growth performance and ileal digestible energy (DE) fo r chicks were affected by SBM source (P<.01), Addition of Avizyme had no ef fect (P>.10) on chick growth performance but significantly increased ileal DE (P<.01). There was a significant interaction (P<.01) between SBM source and Avizyme for ileal DE, indicating that Avizyme increased ileal DE more i n some SBM than in others. Results of this study indicate that chick growth performance was greatly influenced by SBM source and that both SBM source and Avizyme affected ileal DE.