The ‘new season grain phenomenon

  • 46 pages

  • Published: 1 Oct 2000

  • Author(s): Choct, Mingan, Hughes, Bob

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The most difficult problem the feed industry faces today is the variability in the energy value of raw
materials. It was noticed during a survey of the metabolisable energy value of wheat between the late
80s and early 90s that the metabolisable energy value of wheat determined in one assay was not
repeatable in another, especially when the initial value was low and the assays were not done within a
short time span of each other. This led to the initiation of the current project to investigate the post harvest
change of the nutritive value of cereal grains, otherwise known in the industry as the “new
season grain phenomenon”, for poultry in a systematic manner.
This publication reports data obtained from a four-year investigation into post-harvest change in the
metabolisable energy value of wheat, barley, triticale, oats, sorghum and maize in broiler chickens.
Systematic data have been obtained on the new season grain phenomenon and its possible mechanism of
action discussed. There are a number of practical outcomes of this project which can be implemented
in the feed and poultry industries in Australia.