1. Foodstuff Total P(%) Phytate (% of Total P) Barley0.3456 Corn0.2666 Wheat0.3067 Soybean meal0.6161 Cottonseed meal1.0770 Sesame meal1.2781 Wheat bran1.3770 Adapted from Nelson et al. Poultry Sci. 47:1372 ‘68 Phytate P content of Major Swine Feeds

2. Action of Phytase

3. Small Intestine Duodenum Stomach Liver Pancreas Cecum Colon Phytase produced in the salivary glands and secreted in the saliva Phytase Phytate Phosphate PHOSPHATE ABSORPTION Indigestible Phytate phosphorus in the diet Manure low in Phosphorus Phytate in a non-Transgenic pig Phytate in the Enviropig How the Enviropig TM Works