Maciej Szanser

Dear all, according to commercial trials in poultry, using SBM as a traditional protein source, optimal phytase activity for laying hens must be approx. 500 FTU/kg of feed. Dosage of phytase activity can be higher if the feed contains more appropriate substrate (phytates). If you replace SBM by SFM, phytate content becomes to be higher. The same story if you use more wheat bran or rice bran. But b ...