Increasing ewe genetic fecundity improves whole-farm production and reduces greenhouse gas emissions intensities: 2. Economic performance
C. K. M. Ho A E , T. Jackson B , M. T. Harrison C and R. J. Eckard DA Department of Environment and Primary Industries, Parkville, 32 Lincoln Square North, Carlton, Vic. 3053, Australia.
B Australian Bureau of Agricultural and Resource Economics and Sciences, 7 London Circuit, Canberra City, ACT 2601, Australia.
C Tasmanian Institute of Agriculture, University of Tasmania, Tas. 7320, Australia.
D The University of Melbourne, Vic. 3010, Australia.
E Corresponding author. Email: Christie.Ho@depi.vic.gov.au
Animal Production Science 54(9) 1248-1253 https://doi.org/10.1071/AN14309
Submitted: 13 March 2014 Accepted: 12 May 2014 Published: 10 July 2014
Abstract
Ewes with the fecundity Booroola (FecB) gene produce more lambs per ewe on average than ewes without the gene and offers a potential way to decrease greenhouse gas emissions (net and per unit animal product) without reducing lamb production if the lambs can be reared to market weights. Using a case study farm in south-west Victoria, a biophysical modelling study has previously showed that increased ewe fecundity from 1 to 1.5 lambs per ewe increased production by 27% and reduced net farm emissions by 21% for the same long-term stocking rate. In this study, a whole-farm economic analysis was used to investigate the relative merit of the same case study farm, with high-fecundity ewes, compared with a baseline system that represented a typical prime lamb enterprise in the region. An additional system comprising ewes with high fecundity at a lower stocking rate than the case study farm was also examined. The analysis was undertaken to establish which farm systems represented the most economically efficient use of all the resources that are employed over a run of years, and involved estimating the net present value of annual profits earned by the farm in each scenario, taking into account the total value of capital used. The potential revenue from the sale of carbon credits through the Carbon Farming Initiative was also investigated. After accounting for the additional costs involved, increasing ewe fecundity resulted in an increase in annual whole-farm profit compared with the baseline system, but risk, considered as the variability in farm profit, also increased. Decreasing stocking rate for the high-fecundity system reduced annual operating profit and net present value at a 5% discount rate, but had less risk compared with the higher stocking rate system. While both systems that incorporated high-fecundity ewes reduced greenhouse gas emissions, revenue from the sale of carbon credits was small compared with revenue from the sale of lambs, wool and culled ewes. Despite this, and assuming the required increases in fertility and weaning rates could be achieved consistently on-farm, ewes with high fecundity may offer producers the opportunity to increase production and profit as well as decrease greenhouse gas emissions.
Additional keywords: abatement, carbon farming, fertility, livestock, mitigation.
References
CSIRO (2012) ‘Climate and water availability in south-eastern Australia: a synthesis of findings from Phase 2 of the South Eastern Australian Climate Initiative (SEACI).’ (CSIRO: Canberra)Department of Environment (2013) ‘Australia’s contribution – tackling the challenge of climate change. Available at http://www.climatechange.gov.au/international/actions/australias-contribution. [Verified 1 October 2013]
Department of Primary Industries (2011) ‘Livestock Farm Monitor Project – results 2010/11.’ (Department of Primary Industries: Melbourne)
DIICSRTE (2013) ‘Australian national greenhouse accounts: quarterly update of Australia’s national greenhouse gas inventory, December quarter 2012.’ (Department of Industry, Innovation, Climate Change, Science, Research and Tertiary Education: Canberra)
Fair Work Commission (2010) Pastoral Award 2010. Available at http://www.fwc.gov.au/documents/modern_awards/award/ma000035/default.htm. [Verified 17 February 2014]
Harrison MT, Jackson T, Cullen BR, Rawnsley RP, Ho C, Cummins L, Eckard RJ (2014) Increasing ewe genetic fecundity improves whole-farm production and reduces greenhouse gas emissions intensities. 1. Sheep production and emission intensities. In ‘Filling the Research Gap Program, progress report 4 – whole farm systems analysis of greenhouse gas abatement options for the southern Australian grazing industries’. (Ed. R Eckard) pp. 80–105. (University of Melbourne: Melbourne)
Heard J, Malcolm B, Jackson T, Tocker J, Graham P, White A (2013) Whole farm analysis versus activity gross margin analysis: a sheep farm example. AFBM Journal 10, 16–29.
Jackson T (2013) Pasture investment decisions: returns, risk and time. PhD Thesis, University of Melbourne.
Jackson T, Malcolm B (2011) Punting lamb. AFBM Journal 8, 51–60.
Ledgard SF, Lieffering M, Coup D, O’Brien B (2011) Carbon footprinting of New Zealand lamb from the perspective of an exporting nation. Animal Frontiers 1, 40–45.
| Carbon footprinting of New Zealand lamb from the perspective of an exporting nation.Crossref | GoogleScholarGoogle Scholar |
Malcolm B, Makeham J, Wright V (2005) ‘The farming game – agricultural management and marketing.’ (Cambridge University Press: Melbourne)
Morris ST (2009) Economics of sheep production. Small Ruminant Research 86, 59–62.
| Economics of sheep production.Crossref | GoogleScholarGoogle Scholar |
Palisade (2012) ‘@Risk – risk analysis add-in for Excel.’ (Palisade Corporation: Newfield, NY)
Swan A (2009) The economics of litter size in meat sheep. In ‘Use of the FecB (Booroola) gene in sheep-breeding programs. Proceedings of the Helen Newton Turner Memorial International Workshop, 10–12 November 2008, Pune, Maharashtra, India’. (Eds SW Walkden-Brown, JHH van der Werf, C Nimbkar, VS Gupta) pp. 170–176. (Australian Centre for International Agricultural Research: Canberra)
Tocker J Malcolm B Heard J Sinnett A 2013
Walkden-Brown SW, Wolfenden DH, Piper LR (2009) Biological and economic consequences of introgression of the FecB mutation in Merino sheep in Australia. In ‘Use of the FecB (Booroola) gene in sheep-breeding programs. Proceedings of the Helen Newton Turner Memorial international workshop, 10–12 November 2008, Pune, Maharashtra, India’. (Eds SW Walkden-Brown, JHH van der Werf, C Nimbkar, VS Gupta) pp. 170–176. (Australian Centre for International Agricultural Research: Canberra)
Warn L, Donnelly JR, Freer M, Simpson R (2006) Analysis of the profitability of sheep wool and meat enterprises in southern Australia. Final report for Sheep CRC Project 1.2.6. Sheep CRC, Melbourne.
