SHORT COMMUNICATION
Repeatability of methane production in cattle fed
concentrate and forage diets
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1
School of Rural Science and Agriculture, University of New England, Armidale, Australia
2
Beef Industry Centre, NSW Department of Agriculture, Armidale, Australia
Publication date: 2004-08-30
Corresponding author
J. P. Goopy
School of Rural Science and Agriculture, University of New England, Armidale, Australia
J. Anim. Feed Sci. 2004;13(Suppl. 1):75-78
KEYWORDS
ABSTRACT
Eight Angus steers whose methane emissions had had been found to be higher or lower than
predicted when fed a commercial feedlot diet were re-tested on a medium quality forage diet.
Methane emissions were within published ranges (136.4 g d-1), but differences in actual vs predicted
production between high and low ranked animals were diminished and several animals changed in
rankings. This suggests that methane emission characteristics may not persist over time, and that any
selection of animals for low methane emission may need to be diet specific.
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