Abstract

A 28-d growth assay was conducted to determine the effect of phytase dosage and source on growth performance of nursery pigs. The nine experimental treatments were control diets (0.13, 0.18, and 0.23% available phosphorus) and phytase (100, 225, or 350 FTU or FYT/kg) from either Natuphos or Ronozyme P added to the 0.13% available P diet. The results of this experiment indicate that increasing available P or phytase level, through 0.23% available P and 350 FTU or FYT/kg, respectively, improves ADG and feed efficiency. Regression analysis of the ADG response indicated that, when adding less than 350 phytase units/kg, each 100 phytase units/kg will release 0.022 and 0.017% available P for Natuphos and Ronozyme P, respectively.; Swine Day, Manhattan, KS, November 14, 2002

Keywords: Swine day, 2002, Kansas Agricultural Experiment Station contribution, no. 03-120-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 897, Phytase, Phosphorus, Nursery pigs, Swine

How to Cite:

James, B. W., Lynch, G. L., Tokach, M. D., Goodband, R. D., Nelssen, J. L. & Dritz, S. S., (2002) “Effect of phytase dosage and source on growth performance of nursery pigs”, Kansas Agricultural Experiment Station Research Reports 1(10), 74-77. doi: https://doi.org/10.4148/2378-5977.6764