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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2007 > Volume 6 Number 2 > N.J. Baker, A.S. Parsons and J.S. Moritz1

Effects of Various Phytase Concentrations in Diets with Low-phytate Corn on Broiler Chick Performance and Nutrient Use

N.J. Baker, A.S. Parsons and J.S. Moritz1
Division of Animal and Nutritional Sciences, West Virginia University, Morgantown, WV 26506, USA
Abstract :

Research indicates a reduction in phosphorus content of broiler excreta with the supplementation
of phytase to corn-soybean meal based diets or with the use of Low Phytate Corn (LPC). This study
examined how broiler chicks are impacted by phytase supplementation to a LPC [0.136% Phytate
Phosphorus (PP) by analysis] based diet. Different dietary inclusion levels from a 2,500 or a 5,000 FYT/g of
Peniophora lycii phytase product were used as experimental treatments. Following a six day pretest, 576
broiler chicks were randomly assigned to one of 12 dietary treatments, using eight diet replicates and six
birds per cage. Live performance, tibia ash, mineral digestibility and apparent metabolizable energy were
determined. The percent of phosphorus that may have been spared due to each phytase treatment was
calculated using response curves created with increasing levels of monocalcium phosphate. Results
demonstrated that phytase supplementation to a LPC based diet had a positive impact on broiler chick
growth. However, this impact is expressed to a lesser extent than would be expected for normal corn. In
addition, phytase efficacy did not vary based on the concentration of phytase product, likely due to adequate
mix uniformity.

Keywords :
Phytase, low phytate corn, concentration and mixer uniformity

Date Deposited : 14 Jul 2011 11:06

Last Modified : 14 Jul 2011 11:06

Official URL:

Volume 6, Number 2, - 2007 , ISSN 1682-8356

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