caa a22 4500 397542844 CHVBK 20180308164731.0 cr unu---uuuuu 161202s1995 xx s 000 0 eng 10.1093/japr/4.2.157 doi (NATIONALLICENCE)oxford-10.1093/japr/4.2.157 Substitution of Phytase for Inorganic Phosphorus for Turkey Hens [Elektronische Daten] [D. R. Ledoux, K. Zyla, T. L. Veum] Commercial microbial phytase (Natuphos®5000, 1000 units/kg) was fed to turkey hens grown to market age as a partial substitute for inorganic phosphate in corn-soybean meal diets. Available P (aP) levels followed NRC recommendations or were reduced by 0.15%. Dietary Ca levels remained at levels recommended by NRC. This process revealed that phytase improved feed intake and body weight gains of turkey hens grown to market age. Partial substitution of phytase for inorganic P did not influence body composition, toe ash, or bone breaking strength. Partial substitution of phytase for aP did not result in increased P retention from commercial corn-soybean meal diets. Results suggest that too high a P concentration, too wide a Ca:P ratio, or both prevented Natuphos® phytase from increasing P digestibility under commercial type conditions employed in this study. © 1995 Applied Poultry Science, Inc. Available phosphorus nationallicence body composition nationallicence letter phosphorus nationallicence phytase nationallicence turkey hen nationallicence Ledoux D. R. Department of Animal Sciences, 112 Animal Sciences Center, University of Missouri, Columbia, MO 65211; Phone: (314) 882-1140; FAX: (314) 882-6827 aut Zyla K. Department of Animal Sciences, 112 Animal Sciences Center, University of Missouri, Columbia, MO 65211; Phone: (314) 882-1140; FAX: (314) 882-6827 aut Veum T. L. Department of Animal Sciences, 112 Animal Sciences Center, University of Missouri, Columbia, MO 65211; Phone: (314) 882-1140; FAX: (314) 882-6827 aut Journal of Applied Poultry Research Oxford University Press 4/2(1995), 157-163 1056-6171 4:2<157 1995 4 japr https://doi.org/10.1093/japr/4.2.157 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/japr/4.2.157 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ledoux D. R. Department of Animal Sciences, 112 Animal Sciences Center, University of Missouri, Columbia, MO 65211; Phone: (314) 882-1140; FAX: (314) 882-6827 aut NATIONALLICENCE 700 1- Zyla K. Department of Animal Sciences, 112 Animal Sciences Center, University of Missouri, Columbia, MO 65211; Phone: (314) 882-1140; FAX: (314) 882-6827 aut NATIONALLICENCE 700 1- Veum T. L. Department of Animal Sciences, 112 Animal Sciences Center, University of Missouri, Columbia, MO 65211; Phone: (314) 882-1140; FAX: (314) 882-6827 aut NATIONALLICENCE 773 0- Journal of Applied Poultry Research Oxford University Press 4/2(1995), 157-163 1056-6171 4:2<157 1995 4 japr Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford