Phosphorus (P) is an expensive feed ingredient and there is a scarcity of global P reserves. There is a need to improve P utilization by broilers. The use of phytase has significantly improved P utilisation by increasing phytate digestion and therefore the amount of P available for absorption but we know from our previous work that the efficiency of P absorption in broilers is low. The aim of this project is therefore to maximise P absorption by delineating the interrelationship between dietary P levels, dietary phytase addition and gene expression, especially transporter genes. This will allow us to develop dietary strategies to enhance P absorption and will lead to improved P utilization, reduced costs of production and lower environmental impact of poultry waste.
The University of Queensland
The overall aim of the project is to improve the efficiency of P absorption by manipulating diets to increase P transporter gene expression in broilers. To address this aim, the following research questions will be investigated: What is the relationship of dietary P level to P transporter gene expression and how does this influence P utilization? How do dietary concentrations of P and phytase influence P transporter gene expression? Does calcium have a role in modulating P transporter gene expression? Does manipulating diets at an early age stimulate the expression of transporter gene and improve dietary P utilization throughout the broiler’s growth cycle?
Project Start Date
Monday, July 6, 2015
Project Completion Date
Tuesday, October 30, 2018
Journal Articles From Project
An environmentally sustainable Australia
Adoption of R&D
CME-Improve chicken meat production through the whole supply chain