Dried distillers grain with soluble (DDGS) in poultry diets and manure phosphorus content

Implications for feeding strategies to decrease phosphorus loading


Project Leader: Dr. Juan Carlos Rodriguez-Lecompte, Dept. Animal Science, Email: JC_Rodriguez-Lecompte@umanitoba.ca
Co-Investigators: Dr. Bogdan Slominski (U of M), Dr. Don Flaten (U of M)


Funding for this study component arranged by Manitoba Livestock Manure Management Initiative (MLMMI)
Manitoba Chicken Producers - $5,000
Agri-Food Research and Development Initiative (ARDI) - $5,000

This project is a component of a larger multidisciplinary project where corn and wheat-based DDGS co-products are evaluated for their nutritive and antimicrobial capacities. The master project is funded by NSERC, the Canadian Poultry Research Council, Canadian Bio-systems Inc. and the Poultry Industry Council.


Dried distillers grains with solubles are important Canadian feed resources, but contain high and variable phosphorus levels. Therefore, it is important to determine the impact of DDGS inclusion in poultry diets on P excretion, particularly for Manitoba where phosphorus-based manure management regulations are in place. This project focuses on the extent to which including wheat and corn-based DDGS in poultry diets at different rates increases manure phosphorus concentrations and total manure phosphorus generated at different stages of production.  This project addresses the need for simultaneous evaluation of animal production/health benefits as well as potential environmental implications when evaluating feed ingredients.

Environmentally sustainable management of phosphorus in manure avoids accumulation of phosphorus in soil above regulatory thresholds. One of the most cost-effective ways to reduce manure phosphorus is through diet management targeted at eliminating excess dietary phosphorus and optimizing phosphorus utilization.  Data from this study will strengthen existing baseline data for poultry diet management strategies relevant to the Manitoba laying hen industry. Poultry producers and nutrition consultants can draw on this information to aid in selecting the appropriate feed management strategy for optimal productivity while maintaining soil phosphorus within regulation levels.

Download Final Report here (pdf)