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Int J Biometeorol. 2021 Sep 01; doi: 10.1007/s00484-021-02180-3. Epub 2021 Sep 01.

The impact of weather on the incidence of dark cutting in Australian feedlot cattle.

International journal of biometeorology

Cameron Steel, A M Lees, G Tarr, R Warner, F Dunshea, F Cowley, P McGilchrist

Affiliations

  1. School of Environmental and Rural Science, University of New England, Armidale, NSW, 2351, Australia. [email protected].
  2. University of New England, Armidale, NSW, 2350, Australia. [email protected].
  3. School of Environmental and Rural Science, University of New England, Armidale, NSW, 2351, Australia.
  4. School of Mathematics and Statistics, The University of Sydney, Sydney, NSW, 2006, Australia.
  5. Faculty of Veterinary and Agricultural Sciences, School of Agriculture and Food, The University of Melbourne, Melbourne, VIC, 3010, Australia.
  6. Faculty of Biological Sciences, The University of Leeds, Leeds, LS2 9JT, UK.

PMID: 34468837 DOI: 10.1007/s00484-021-02180-3

Abstract

This study conducted a retrospective analysis of historical Meat Standard Australia (MSA) carcass data in combination with Bureau of Meteorology (BOM) weather data, to evaluate the relationship between climatic conditions prior to feedlot departure on the incidence of dark cutting grain-fed beef. Data records for 2,795,754 carcasses from 17 commercial feedlots over a 6-year period were evaluated within this study. Carcasses were consigned to 16 abattoirs. Weather data from BOM were recorded at 30-min intervals and were obtained from weather stations with the closest proximity to each feedlot. These data were used to calculate the Temperature Humidity Index (THI). Climatic data were amalgamated into daily observations and a series of predictors including ambient temperature (T

© 2021. ISB.

Keywords: Heat load; Heat stress; Temperature Humidity Index; Thermal comfort

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