Poultry GHG Mitigation
Lead organisation and partner organisations:
Lead: Feedlot Services Australia Pty Ltd (FSA Consulting); The Centre for Atmospheric Chemistry, University of Wollongong
Principal Investigators: Mr Stephen Wiedemann (FSA), Dr Francis Phillips (UOW)
Project Partners: Australian Government Department of Agriculture, Chicken Meat Program of Rural Industries Research and Development Corporation, Australian Egg Corporation Limited
Outcomes to Industry
These poultry studies provide the first data on greenhouse gas emissions from sheds and manure in the chicken meat industry and the egg layer industry in Australia.
- Both the meat chicken and egg layer production systems that were studied had very low GHG emissions. They were up to 8 times lower than the values previously estimated by the Australian National Greenhouse Accounts.
- Meat chicken had very modest potential for reductions of GHG emissions by altering litter depth or dietary crude levels. Increasing the depth of the litter in meat poultry shed by 20 mm failed to mitigate against total GHG emissions. Reduction of dietary crude protein by 1.5 % units, through more use of synthetic amino acids also failed to significantly affect overall GHG emissions. These modest GHG reductions are not expected to be sufficient to warrant further investigation of an Emission Reduction Fund (ERF) method for the industry.
- In the experiment in multi-tiered cage houses at an egg layer farm, the mitigation treatment of covering the stockpiled manure reduced total GHG emissions by about 88%, primarily through reducing ammonia emissions from the covered stockpile. The outcomes from this mitigation trial are considered technically sufficient to enable the development of an ERF method.
The results from this Project also supported the further development and validation of EGGBAL and BROILERBAL which are predictive models that are now available to the Australian poultry industries.