Adoptability and effectiveness of livestock emission reduction techniques in Australia’s temperate high-rainfall zone
Adrian R. James A C and Matthew T. Harrison BA NRM North, 63–65 Cameron St Launceston, Tas. 7250, Australia.
B Tasmanian Institute of Agriculture, University of Tasmania, Tas. 7320, Australia.
C Corresponding author. Email: ajames@nrmnorth.org.au; james_adrian@hotmail.com
Animal Production Science 56(3) 393-401 https://doi.org/10.1071/AN15578
Submitted: 14 September 2015 Accepted: 27 November 2015 Published: 9 February 2016
Abstract
Significant research has been conducted on greenhouse gas emissions mitigation techniques for ruminant livestock farming, however putting these techniques into practice on-farm requires consideration of adoptability by livestock producers. We modelled the adoptability of a range of livestock greenhouse gas abatement techniques using data from farm case studies and industry surveys, then compared the effectiveness of several techniques in reducing emissions intensity and net farm emissions. The influence of the Australian Government Emissions Reduction Fund on adoptability was included by modelling techniques with and without the requirements of an Australian Government Emissions Reduction Fund project. Modelled adoption results were compared with data obtained from surveys of livestock farmers in northern Tasmania, Australia. Maximum adoption levels of the greenhouse gas mitigation techniques ranged from 34% to 95% and the time required to reach 90% of the peak adoption levels ranged from 3.9 to 14.9 years. Techniques with the lowest adoption levels included providing supplements to optimise rumen energy : protein ratio and feeding high-lipid diets. Techniques with the highest adoptability involved improved ewe reproductive efficiency, with more fertile flocks having higher adoption rates. Increasing liveweight gain of young stock so animals reached slaughter liveweight 5–7 weeks earlier (early finishing) and joining maiden ewes at 8 months instead of 18 months had the fastest adoption rates. Techniques which increased net emissions and reduced emissions per liveweight sold (emissions intensity) had higher adoptability due to profit advantages associated with greater meat and wool production, whereas some techniques that reduced both net emissions and emissions intensity had lower adoptability and/or longer delays before peak adoption because of complexity and costs associated with implementation, or lack of extension information. Techniques that included an Australian Government Emissions Reduction Fund project had reduced maximum adoption levels and reduced rate of adoption due to difficulty of implementation and higher cost. Adopting pastures with condensed tannins reduced net emissions, emissions intensity and had high adoption potential, but had a long delay before peak adoption levels were attained, suggesting the technique may be worthy of increased development and extension investment. These results will be of benefit to livestock farmers, policymakers and extension practitioners. Programs designed to mitigate livestock greenhouse gas should consider potential adoption rates by agricultural producers and time of implementation before embarking on new research themes.
Additional keywords: abatement, condensed tannins, ewes, lambs, methane, nitrous oxide, ruminant.
References
Alcock D, Hegarty RS (2006) Effects of pasture improvement on productivity, gross margin and methane emissions of a grazing sheep enterprise. In ‘International congress series. Vol. 1293’. (Eds C Soliva, J Takahashi, M Kreuzer) pp. 103–106. (Elsevier)Alcock DJ, Harrison MT, Rawnsley RP, Eckard RJ (2015) Can animal genetics and flock management be used to reduce greenhouse gas emissions but also maintain productivity of wool-producing enterprises? Agricultural Systems 132, 25–34.
| Can animal genetics and flock management be used to reduce greenhouse gas emissions but also maintain productivity of wool-producing enterprises?Crossref | GoogleScholarGoogle Scholar |
Beauchemin KA, Kreuzer M, O’mara F, McAllister TA (2008) Nutritional management for enteric methane abatement: a review. Animal Production Science 48, 21–27.
| Nutritional management for enteric methane abatement: a review.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXovVGn&md5=23b38df440406cdf954ea8c1fc39bac0CAS |
Blaxter KL, Clapperton JL (1965) Prediction of the amount of methane produced by ruminants. British Journal of Nutrition 19, 511–522.
| Prediction of the amount of methane produced by ruminants.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaF28XitFKktg%3D%3D&md5=6cde6902b771bbb1af70db2dca0760aaCAS | 5852118PubMed |
Climate Change Authority (2014) Carbon farming initiative review, report. Available at http://www.climatechangeauthority.gov.au/sites/prod.climatechangeauthority.gov.au/files/files/CCA-CFI-Review-published.pdf [Verified 10 December 2015]
Colmenero JO, Broderick GA (2006) Effect of dietary crude protein concentration on milk production and nitrogen utilization in lactating dairy cows. Journal of Dairy Science 89, 1704–1712.
| Effect of dietary crude protein concentration on milk production and nitrogen utilization in lactating dairy cows.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28XktVOhtrs%3D&md5=46ae93c0c5b146e01ee8c0163925afbaCAS |
Comlaw (2015) Carbon Credits (Carbon Farming Initiative) (Reducing Greenhouse Gas Emissions by Feeding Nitrates to Beef Cattle) Methodology Determination 2014. Available at https://www.comlaw.gov.au/Details/F2015C00580 [Verified 10 December 2015]
Czerkawski JW, Blaxter KL, Wainman FW (1966) The metabolism of oleic, linoleic and linolenic acids by sheep with reference to their effects on methane production. British Journal of Nutrition 20, 349–362.
| The metabolism of oleic, linoleic and linolenic acids by sheep with reference to their effects on methane production.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaF28Xkt1ensrw%3D&md5=3fe89a7c88b2ea940d9566df299a05b7CAS | 5938713PubMed |
Department of Environment (2014) Emissions reduction fund. Available at http://www.environment.gov.au/climate-change/emissions-reduction-fund [Verified 10 December 2015]
Doran-Browne N, Behrendt R, Kingwell R, Eckard RJ (2015) Modelling the potential of birdsfoot trefoil (Lotus corniculatus) to reduce methane emissions and increase production on wool and prime lamb farm enterprises. Animal Production Science 55, 1097–1105.
| Modelling the potential of birdsfoot trefoil (Lotus corniculatus) to reduce methane emissions and increase production on wool and prime lamb farm enterprises.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2MXht1CitLbE&md5=e1288b642c894b75618ed59644069b2aCAS |
Eckard RJ, Grainger C, De Klein CAM (2010) Options for the abatement of methane and nitrous oxide from ruminant production: a review. Livestock Science 130, 47–56.
| Options for the abatement of methane and nitrous oxide from ruminant production: a review.Crossref | GoogleScholarGoogle Scholar |
Feedtest (2015) ‘Laboratory feed test results.’ (Agrifood Technology: Werribee, Vic.)
Harrison MT, Christie KM, Rawnsley RP, Eckard RJ (2014a) Modelling pasture management and livestock genotype interventions to improve whole-farm productivity and reduce greenhouse gas emissions intensities. Animal Production Science 54, 2018–2028.
| Modelling pasture management and livestock genotype interventions to improve whole-farm productivity and reduce greenhouse gas emissions intensities.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXhvVGgsb7M&md5=78c4525a2016aaa5cdb2ec0cd588e4b2CAS |
Harrison MT, Jackson T, Cullen BR, Rawnsley RP, Ho C, Cummins L, Eckard RJ (2014b) Increasing ewe genetic fecundity improves whole-farm production and reduces greenhouse gas emissions intensities: 1. Sheep production and emissions intensities. Agricultural Systems 131, 23–33.
| Increasing ewe genetic fecundity improves whole-farm production and reduces greenhouse gas emissions intensities: 1. Sheep production and emissions intensities.Crossref | GoogleScholarGoogle Scholar |
Harrison MT, McSweeney C, Tomkins NW, Eckard RJ (2015) Improving greenhouse gas emissions intensities of subtropical and tropical beef farming systems using Leucaena leucocephala. Agricultural Systems 136, 138–146.
| Improving greenhouse gas emissions intensities of subtropical and tropical beef farming systems using Leucaena leucocephala.Crossref | GoogleScholarGoogle Scholar |
Harrison MT, Cullen BR, Tomkins NW, McSweeney C, Cohn P, Eckard RJ (2016) The concordance between greenhouse gas emissions, livestock production and profitability of extensive beef farming systems. Animal Production Science 56, 370–384.
| The concordance between greenhouse gas emissions, livestock production and profitability of extensive beef farming systems.Crossref | GoogleScholarGoogle Scholar |
Hegarty RS, Alcock D, Robinson DL, Goopy JP, Vercoe PE (2010) Nutritional and flock management options to reduce methane output and methane per unit product from sheep enterprises. Animal Production Science 50, 1026–1033.
| Nutritional and flock management options to reduce methane output and methane per unit product from sheep enterprises.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXhsVGrt7fJ&md5=6e2f7ec34211f3b03bfcda3aa3e1061fCAS |
Ho CKM, Jackson T, Harrison MT, Eckard RJ (2014) Increasing ewe genetic fecundity improves whole-farm production and reduces greenhouse gas emissions intensities: 2. Economic performance. Animal Production Science 54, 1248–1253.
Hristov AN, Oh J, Lee C, Merinen R, Montes F, Ott T, Firkins J, Rotz A, Dell C, Adesogan A, Yang W, Tricarico J, Kebreab E, Waghort G, Dijkstra J, Oosting S (2013) ‘Mitigation of greenhouse gas emissions in livestock production – A review of technical options for non-CO2 emissions.’ (Eds Pierre J. Gerber, Benjamin Henderson, Harinder P. S. Makkar) FAO Animal Production and Health Paper No. 177. (Food and Agriculture Organisation of the United Nations: Rome, Italy)
Jacobs JL, McKenzie FR, Ward GN (1999) Changes in the botanical composition and nutritive characteristics of pasture, and nutrient selection by dairy cows grazing rainfed pastures in western Victoria. Australian Journal of Experimental Agriculture 39, 419–428.
| Changes in the botanical composition and nutritive characteristics of pasture, and nutrient selection by dairy cows grazing rainfed pastures in western Victoria.Crossref | GoogleScholarGoogle Scholar |
Kopke E, Young J, Kingwell R (2008) The relative profitability and environmental impacts of different sheep systems in a Mediterranean environment. Agricultural Systems 96, 85–94.
| The relative profitability and environmental impacts of different sheep systems in a Mediterranean environment.Crossref | GoogleScholarGoogle Scholar |
Kuehne G, Llewellyn R, Pannell D, Wilkinson R, Dolling P, Ouzman J (2013) ADOPT: the Adoption and Diffusion Outcome Prediction Tool (Public Release Version 1.0, June 2013) [Computer software]. Adelaide, SA, CSIRO. Available at www.csiro.au/ADOPT [Verified 10 December 2015]
LFMP (2014) Livestock Farm Monitor Project Results 2013/14. Department of Environment and Primary Industries. Available at http://www.dpi.vic.gov.au/agriculture/beefand-sheep/sheep/victorias-sheep-meat-and-wool-industry [Verified 17 February 2013]
Marchant (2014) Age of first joining sheep. AgFact A3.4.2, 3rd edn. NSW Agriculture. Available at http://www.dpi.nsw.gov.au/__data/assets/pdf_file/0011/179732/joining-age-sheep.pdf [Verified 15 November 2015]
Martin C, Morgavi DP, Doreau M (2010) Methane mitigation in ruminants: from microbe to the farm scale. Animal 4, 351–365.
| Methane mitigation in ruminants: from microbe to the farm scale.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXhslWgs7k%3D&md5=eb26a3959e2a2f59e9df73f746e4d771CAS | 22443940PubMed |
Montossi F (1995) Comparative studies on the implications of condensed tannins in the evaluation of Holcus lanatus and Lolium spp. swards for sheep performance: a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Massey University, Palmerston North, New Zealand. Available at http://mro.massey.ac.nz/handle/10179/3080 [Verified 25 November 2015]
Mueller‐Harvey I (2006) Unravelling the conundrum of tannins in animal nutrition and health. Journal of the Science of Food and Agriculture 86, 2010–2037.
| Unravelling the conundrum of tannins in animal nutrition and health.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28XhtFajsr%2FF&md5=3176efcf014d1bc94a6b8e06f5cfb4a4CAS |
National Research Council (1985) ‘Nutrient requirements of sheep.’ 6th revised edn. (The National Academies Press: Washington, DC)
Pannell DJ, Marshall GR, Barr N, Curtis A, Vanclay F, Wilkinson R (2006) Understanding and promoting adoption of conservation practices by rural landholders. Animal Production Science 46, 1407–1424.
| Understanding and promoting adoption of conservation practices by rural landholders.Crossref | GoogleScholarGoogle Scholar |
Patra AK (2012) Enteric methane mitigation technologies for ruminant livestock: a synthesis of current research and future directions. Environmental Monitoring and Assessment 184, 1929–1952.
| Enteric methane mitigation technologies for ruminant livestock: a synthesis of current research and future directions.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XjtFOjsbw%3D&md5=557523d59d2a947b93943c81b3a8200cCAS | 21547374PubMed |
Rotz CA (2004) Management to reduce nitrogen losses in animal production. Journal of Animal Science 82, E119–E137.
Sarkar SK, Howarth RE, Goplen BP (1976) Condensed tannins in herbaceous legumes. Crop Science 16, 543–546.
| Condensed tannins in herbaceous legumes.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaE28Xltl2ktr4%3D&md5=3472e361558c90abd51eed0c3c23e286CAS |
Steinfeld H, Gerber P, Wassenaar T, Castel V, Rosales M, de Haan C (2006) ‘Livestock’s long shadow – environmental issues and options.’ (Food and Agriculture Organization of the United Nations: Rome, Italy)
Turner LR, Donaghy DJ, Lane PA, Rawnsley RP (2006) Effect of defoliation management, based on leaf stage, on perennial ryegrass (Lolium perenne L.), prairie grass (Bromus willdenowii Kunth.) and cocksfoot (Dactylis glomerata L.) under dryland conditions. 2. Nutritive value. Grass and Forage Science 61, 175–181.
| Effect of defoliation management, based on leaf stage, on perennial ryegrass (Lolium perenne L.), prairie grass (Bromus willdenowii Kunth.) and cocksfoot (Dactylis glomerata L.) under dryland conditions. 2. Nutritive value.Crossref | GoogleScholarGoogle Scholar |
Turner LR, Donaghy DJ, Pembleton KG, Rawnsley RP (2014) Longer defoliation interval ensures expression of the ‘high sugar’ trait in perennial ryegrass cultivars in cool temperate Tasmania, Australia. The Journal of Agricultural Science 153, 995–1005.
Waghorn G (2008) Beneficial and detrimental effects of dietary condensed tannins for sustainable sheep and goat production – progress and challenges. Animal Feed Science and Technology 147, 116–139.
| Beneficial and detrimental effects of dietary condensed tannins for sustainable sheep and goat production – progress and challenges.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXht1ejtL7J&md5=44fd0a1a557176cb12639e8e0076a867CAS |
Waghorn GC, Douglas GB, Niezen JH, McNabb WC, Foote AG (1998) Forages with condensed tannins-their management and nutritive value for ruminants. In ‘Proceedings of the conference – New Zealand Grassland Association’. (Ed. C Mercer) pp. 89–98. (New Zealand Grasslands Association: Palmerston North, New Zealand)
Young JM, Trompf J, Vercoe PE, Thompson AN (2016) Critical control point analysis of methane emissions on southern Australian sheep farms to evaluate on-farm actions and determine the potential for research. (In press.)
