Breeding Cattle to Reduce Methane Emissions
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This document discusses breeding cattle for lower greenhouse gas emissions in Australia. It found that there is natural variation in methane yield between bulls, with some being high and some being low methane yield. Selective breeding using low methane yield bulls could reduce cumulative enteric methane emissions from cattle by over 568,000 tons over 25 years. Adding a breeding value for low methane yield to selection indexes may help lower greenhouse gas emissions from cattle herds in a quantifiable and verifiable way.
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Breeding Cattle to Reduce Methane Emissions
- 1. BREEDING CATTLE FOR LOWER GREENHOUSE GAS EMISSIONS IN AN AUSTRALIAN CARBON TRADING ENVIRONMENT Robert Herd Industry & Investment NSW Beef Centre, Armidale, NSW This project is supported by funding from the Australian Government Department of Agriculture, Fisheries and Forestry as part of the Climate Change Research Program.
- 3. 95% of cattle emissions
- 4. Example: selection for feed efficiency brings a greenhouse gas benefit Reduction in methane emissions accompanies reduction in feed intake .
- 7. Found High and Low MY bulls
- 11. Early results: Averages for Methane Yield of Progeny (g methane/kg feed)
- 12. Might selective breeding change? Meat traits Cow traits
- 16. Add a BV for Low MY
- 18. BREEDING CATTLE FOR LOWER GREENHOUSE GAS EMISSIONS This project is supported by funding from the Australian Government Department of Agriculture, Fisheries and Forestry as part of the Climate Change Research Program.
- 21. Dr. John Goopy Also natural variation in sheep - heritable.
Notas del editor
- Given the assumed adoption patterns and the continual annual improvement in the RFI trait in bulls used by commercial beef producers there is a slow increase in the amount of methane abated up until 2012 after which the rate of annual improvement in methane abated from the Australian herd is relatively constant. Reaching approximately some 3.1% reduction in methane produced by the Australian beef industry by year 25 or 2026 relative to the 2002 base year. Given the cyclical nature of beef cattle numbers, the size of the cattle herd and assumptions regarding feed quality and growth rates are assumed constant.