The aim of this study will be to determine optimum ranges of NSP in commercial meat chicken diets at different growth phases and evaluate the contribution of dietary NSP to health and performance, based on feed costs, meat output and litter quality. NSP also display antinutritional effects; insoluble NSP act as nutrient diluents and physical barriers to enzymes and soluble NSP increase digesta viscosity, thereby reducing efficient digestion and absorption of starch, protein and lipids. To overcome these antinutritional effects, NSPdegrading enzymes (NSPases) are readily supplemented into broiler diets. This project will investigate the potential of customising NSPase application to the specific polysaccharides in the diet, by evaluating the response of different diet combinations and ingredients to tailored NSPase cocktails, both in vitro and in situ.
University of New England
1) Develop a detailed understanding of the impact of dietary NSP level on performance and meat production, by feeding birds commercial diets with different base ingredients and a range of NSP contents. A survey will also be conducted with meat chicken integrator companies in Australia; the approximate NSP content of their diets will be calculated and correlated with the corresponding performance and meat production to assess the contribution of dietary NSP.2) Explore the concept of tailoring NSPase application to the specific polymers in the diet, with particular focus on xylanase, betaglucanase, cellulase, galactanase, mannanase and pectinase. This will involve looking at current common practices for NSPase application, and assessing the comparative advantages or disadvantages of applying tailored NSPase cocktails, from both an economic and practical viewpoint.3) Explore the effect of bird age on response to NSPases and the antinutritional effect of NSP.
Project Start Date
Friday, July 12, 2019
Project Completion Date
Thursday, July 15, 2021
Journal Articles From Project
An environmentally sustainable Australia
Adoption of R&D
CME-Improve chicken meat production through the whole supply chain