more education, by firms and universities,
so producers have a better understanding
of how different formulations work.
Dr. Phillip Hargis, a consultant in Batesville,
Arkansas, says that the more selection of
enzymes “is confusing for a lot of folks.” He
adds, however, that enzymes overall are
purer than they once were. He says that it is
important to account for enzymes properly
when designing a ration, “because if you don’t
you can get unusual nutritional reactions by
creating nutritional imbalances.” That said,
Dr Hargis adds that enzymes are “very, very
underutilised for poultry (in the U.S.). If we had
more understanding, we could make feed $3
per metric ton cheaper, but we’re locked up
Provided by BASF
in our own fear of financial failure.”
Enzyme research, Dr. Hargis says, is
dificult to do.
Dr Hargis says that enzymes can act differently with feed mill equipment, so he suggests
doing retention assays on new enzymes before
using them. For e.g., some enzymes may be
more sensitive to temperature than others.
Adding enzymes to feed can provide
economic benefits in the downstream
value chain and has a positive impact on
the environment by reducing the excretion
of substances like phosphates and nitrogen compounds, says Peter Ader, global
technical product manager, enzymes feed,
nutrition ingredients, BASF. He adds that it is
New research developments focus on
making enzymes better able to withstand
heat in the feed mill. Photo is a close-up of
the fungus Aspergillus niger, from which
some enzymes are made.
expected that prices for the most important
plant-based feedstuffs like corn, soya and
wheat will rise in the mid and long term. This
development makes the use of enzymes
in feed “more and more attractive. While
improving utilisation of energy and nutrients,
enzymes help to improve animal performance or allow feeding less feedstuffs while
maintaining the performance level.”
Ader continues that “from observation
of the patent literature one can conclude
that improving the thermal stability of enzymes and enzyme formulations is a central
research topic for several suppliers. This development is driven by the need of feed producers to increase processing temperatures
in order to ensure the required and increasing
hygiene standards of their products.”
Ever-changing ingredient base
According to a Danisco spokesperson,
some of the latest developments in enzyme
technology include developing knowledge
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