Impact of grain-based ethanol production on the cattle feedlot industry in eastern Australia: grain supply
R. A. Hunter A C E , P. M. Kennedy A D and E. J. Sparke BA CSIRO, Livestock Industries, Rockhampton, Qld, 4701, Australia.
B Aquila Agribusiness Pty Ltd, 5/25 Paterson Road, Bolwarra, NSW 2320, Australia.
C Present address: CSIRO Agriculture and Food, Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, Qld 4067, Australia.
D Present address: CSIRO Agriculture and Food, James Cook University, Townsville, Qld 4811, Australia.
E Corresponding author. Email: Bob.Hunter@csiro.au
Animal Production Science 59(4) 601-607 https://doi.org/10.1071/AN17527
Submitted: 1 August 2017 Accepted: 24 February 2018 Published: 7 May 2018
Abstract
Statistical data from the years 1998–2005 were used to investigate the capacity of the grain industry in eastern Australia to supply the grain necessary for inclusion of 10% ethanol in petrol (E10), in addition to the demands of grain for feedlot cattle. Evidence is provided that the variations in grain yields and grain consumption by cattle in these years are representative of the on-going situation and that interpretations and conclusions have continuing relevance. During 1998–2005, annual production of cereal grains in eastern Australia varied between 10 and 25 million tonnes. Similar fluctuations (11 and 27 million tonnes) in annual grain yields were observed between 2006 and 2014. The Australian potential requirement for E10 ethanol is ~2500 ML annually, with a grain usage of 6.1–7.6 million tonnes depending on the grain sources used. Established national grain demand for ruminant and monogastric livestock, human consumption and other domestic uses is ~7.5 million tonnes per year. In years of average or higher grain yields in Queensland, New South Wales, Victoria and South Australia, the combined grain surpluses are more than sufficient for E10 ethanol to be produced domestically. In the years of the lowest grain yields, the surplus over more traditional usages is sufficient to satisfy only 50% of potential demand for E10. The greatest densities of feedlot cattle are in south-eastern Queensland, northern New South Wales and in the Murrumbidgee region of southern New South Wales. On a regional basis, the grain surplus to feedlot demand in most years in south-eastern Queensland is not sufficient to satisfy requirement for ethanol production without competition for grain. In years of highest yields, the grain surplus was sufficient for a 240-ML ethanol plant. Northern New South Wales could support at least two 400-ML plants in years of average and above yields, once established grain demands are met. The grain shortfall in years of lowest yield for one 400-ML plant is about half a million tonnes. Grain surpluses in average years in the Murrumbidgee region are sufficient to support at least one 400-ML plant. In years of lowest yield, only a 160-ML plant could be supported without competition for grain.
Additional keywords: annual grain fluctuations, feedlot cattle, petrol demand.
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