Economics of reducing methane emissions from beef cattle in extensive grazing systems in Queensland
John RolfeCentre for Environmental Management, CQ University, Qld 4720, Australia. Email: J.Rolfe@cqu.edu.au
The Rangeland Journal 32(2) 197-204 https://doi.org/10.1071/RJ09026
Submitted: 18 May 2009 Accepted: 22 March 2010 Published: 30 June 2010
Abstract
Beef cattle contribute ~7% of anthropocentric greenhouse gas emissions in Australia through the release of methane into the atmosphere. Cattle in northern Australia produce more methane per unit of beef produced because tropical grasses are generally of poor quality and elicit slower average growth rates. In this paper the level of emissions from different herds and some strategies to reduce emissions are estimated with a daily time-step model. The results indicate that few options exist to reduce methane emissions from extensive grazing systems without reducing beef production. Options to improve production or feed conversion efficiencies can generate lower levels of emissions per kg of beef produced, but can be expected to lead to increased livestock numbers and higher overall methane emissions. A woodland grazing case study from central Queensland suggests the opportunity cost of reducing each kg of methane emissions by reducing stocking rates ranges from 1.0 to 1.2 kg of liveweight beef production. A price of $23 per t of carbon dioxide equivalent would indicate that opportunity costs (ignoring fixed costs of production) of reducing emissions by adjusting stocking rates would range between $0.39 and $0.49 per kg of beef produced.
Additional keywords: agriculture, greenhouse, livestock, rangelands.
Acknowledgements
The research reported in this paper has been supported by Meat and Livestock Australia. The provision of data from the MLA project (NAP3.208) by Mr Paul Jones (DPI) is gratefully acknowledged. Data summaries and estimation of methane yields are the responsibility of the author. Thanks are also due to the helpful comments of Veronika Zeil and two anonymous referees.
Alford A. R.,
Hegarty R. S.,
Purnell P. F.,
Cacho O. J.,
Herd R. M., Griffith G. R.
(2006) The impact of breeding to reduce residual feed intake on enteric methane emissions from the Australian beef industry. Australian Journal of Experimental Agriculture 46, 813–820.
| Crossref | GoogleScholarGoogle Scholar |
Beauchemin K. A.,
Kreuzer M.,
O’Mara F., McAllister T. A.
(2008) Nutritional management for enteric methane abatement: a review. Australian Journal of Experimental Agriculture 48, 21–27.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Bentley D.,
Hegarty R. S., Alford A. R.
(2008) Managing livestock enterprises in Australia’s extensive rangelands for greenhouse gas and environmental outcomes: a pastoral company perspective. Australian Journal of Experimental Agriculture 48, 60–64.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Blaxter K. L., Clapperton J. L.
(1965) Prediction of the amount of methane produced by ruminants. British Journal of Nutrition 19, 511–522.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
PubMed |
Charmley E.,
Stephens M. L., Kennedy P. M.
(2008) Predicting livestock productivity and methane emissions in northern Australia: development of a bio-economic modelling approach. Australian Journal of Experimental Agriculture 48, 109–113.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
DeRamus H. A.,
Clement T. C.,
Giampola D. D., Dickison P. C.
(2003) Methane emissions of beef cattle on forages: efficiency of grazing management systems. Journal of Environmental Quality 32, 269–277.
|
CAS |
Crossref |
PubMed |
Fiala N.
(2008) Meeting the demand: an estimate of potential future greenhouse gas emissions from meat production. Ecological Economics 67, 412–419.
| Crossref | GoogleScholarGoogle Scholar |
Hall W. B.,
McKeon G. M.,
Carter J. O.,
Day K. A.,
Howden S. M.,
Scanlon J. C.,
Johnston P. W., Burrows W. H.
(1998) Climate change in Queensland’s grazing lands: II. An assessment of the impact on animal production from native pastures. The Rangeland Journal 20, 177–205.
| Crossref | GoogleScholarGoogle Scholar |
Howden S. M., Reyenga P. J.
(1999) Methane emissions from Australian livestock: implications of the Kyoto Protocol. Australian Journal of Agricultural Research 50, 1285–1291.
| Crossref | GoogleScholarGoogle Scholar |
Howden S. M.,
White D. H.,
McKeon G. M.,
Scanlon J. C., Carter J. O.
(1994) Methods for exploring management options to reduce greenhouse gas emissions from tropical grazing systems. Climatic Change 27, 49–70.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
Hunter R. A.
(2007) Letter to the editor: Methane production by cattle in the tropics. British Journal of Nutrition 98, 657.
| Crossref | GoogleScholarGoogle Scholar |
CAS |
PubMed |
Johnson K. A., Johnson D. E.
(1995) Methane emissions from cattle. Journal of Animal Science 73, 2483–2492.
|
CAS |
PubMed |
Kurihara M.,
Magner T.,
Hunter R. A., McCrabb G. J.
(1999) Methane production and energy partition of cattle in the tropics.’ British Journal of Nutrition 81, 227–234.
|
CAS |
PubMed |
McCrabb G. J., Hunter R. A.
(1999) Prediction of methane emissions from beef cattle in tropical production systems. Australian Journal of Agricultural Research 50, 1335–1339.
| Crossref | GoogleScholarGoogle Scholar |
Minson D. J., McDonald C. K.
(1987) Estimating forage intake from the growth of beef cattle. Tropical Grasslands 21, 116–122.