Date of Graduation
Davis College of Agriculture, Natural Resources and Design
Animal and Nutritional Sciences
Joseph S. Moritz.
Research indicates a reduction of phosphorus content in fecal excreta with the supplementation of phytase to corn-soybean meal based diets or with the use of low phytate corn (LPC) in broilers. This study examined how 0--3 wk broiler chicks are impacted by concomitant phytase supplementation with LPC (0.136% phytate phosphorus (PP) by analysis) in the diet. Various levels of phytase from either 2500 or 5000 FYT/g of Peniophora lycii phytase product were used as experimental treatments. Efficacy of treatments was determined using a response curve created with increasing levels of monocalcium phosphate. Following a 6-day pretest, 576 broiler chicks were randomly assigned to one of the 12 dietary treatments, with 8 replicates and 6 birds per cage. Measurements of live performance, tibia ash, mineral digestibility and apparent metabolizable energy were obtained. Results showed phytase supplementation in diets containing LPC had a positive impact on broiler chick growth.
Baker, Nicole J., "Effects of various phytase concentrations in diets with low-phytate corn on broiler chick performance and metabolism" (2004). Graduate Theses, Dissertations, and Problem Reports. 2004.