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RESEARCH ARTICLE (Open Access)

Australian cattle herd: a new perspective on structure, performance and production

Geoffry Fordyce https://orcid.org/0000-0001-5792-0711 A E , Richard Shephard B , Tim Moravek C and Michael R. McGowan D
+ Author Affiliations
- Author Affiliations

A The University of Queensland, Queensland Alliance for Agriculture and Food Innovation, PO Box 976, Charters Towers, Qld 4072, Australia.

B Herd Health Pty Ltd, 65 Beet Road, Maffra, Vic. 3860, Australia.

C Department of Agriculture and Fisheries, PO Box 6014, Red Hill Rockhampton, Qld 4701, Australia.

D The University of Queensland, Gatton, Qld 4343, Australia.

E Corresponding author. Email: g.fordyce@uq.edu.au

Animal Production Science - https://doi.org/10.1071/AN20342
Submitted: 4 June 2020  Accepted: 16 February 2021   Published online: 19 April 2021

Journal Compilation © Journal compilation © CSIRO 2021 Open Access CC BY 2021 Open Access CC BY-NC-ND

Abstract

Context: Businesses within the Australian cattle industries and associated research and advisory agencies require accurate data on production and performance of the national herd. Currently, these are derived from survey and statistical data; the latter is expected to be accurate, but the former needs to be tested in view of information suggesting significant under-reporting.

Aims: The research aimed to define the structure, performance and liveweight production of the Australian cattle herd and describe changes in reproduction, growth and survival over the past 40–50 years.

Methods: Interactive static herd modelling of beef and dairy herds was reconciled each year from 1976 to 2018, using slaughter and live export statistics and surveyed dairy cow numbers. A principle applied was that model performance should dictate input variables, moderating information derived from publications and professional opinion.

Key results: The Australian cattle herd fluctuated in size till the mid-1980s from when it settled into a range of 30–40 million beef cattle (12–16 Mt), exceeding survey data by 56–75%. The dairy herd remained at ~10% of the beef herd. Despite consistent herd size, productivity of the cattle herd increased from ~2.5 to 4.5 Mt of liveweight annually over 35 years. Half of this change was due to reductions in mortality, though ~1 million post-weaning-age cattle still die annually, in addition to >0.5 million calves from birth to weaning. Approximately a quarter each of the change was due to increased reproductive output and to steer growth. Liveweight production per beef animal increased from 70–75 kg/year to 130–135 kg/year, while liveweight production ratio increased by 0.08 and 0.12 kg/kg of cattle in male and female beef cattle respectively, to reach 0.31 kg/kg of cattle.

Conclusions: The main conclusion is the size, performance, production and productivity of the Australian cattle herd are quite different from that determined from surveys. Also, there is an on-going opportunity to derive benefit from improving cattle survival, reproduction and growth and from improving the feed base.

Implications: This research may have large impact on priorities for Australian beef business and associated environmental management. It is recommended that surveys be used to derive relative values to use in combination with absolute statistical data to derive accurate herd measures.

Keywords: calf wastage, lactation rate.


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