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RFI (Residual Feed Intake) is a relatively new genetic trait that
academics and some cattle producers are trying to select for the
reduces cattle feed intake. When balanced in selecting also for
production scientists in Australia, Canada, and here in the US have
found up to a 20% less intake.
Research in these same countries are now finding that by selecting
for RFI, one not only can reduce feed intake but will improve feed
utilization and studies have found between a 20-40% reduction in
methane produced.
Unfortunately, the systems to measure these trait are fairly
expensive and nit all cattle seedstock producers are willing to
invest on this technology.
Also, their is a large group of seedstock producers and
Universities compiling their data to identify those families of
cattle and individuals that excel in this trait.
For further information you can contact me or GrowSafe systems in
Canada
Leo McDonnell