Feed Strategy - March 2018 - 34
34 ❙ FeedStrategy
FEED PROCESSING EQUIPMENT
PATHOGENS, LIKE SALMONELLA AND E. COLI,
are found almost anywhere in the environment
and can enter a mill from dust, bird droppings or
Studies show that cooking ingredients with processing equipment at a high temperature for a specific amount
of time reduces pathogens. The specific temperature and
amount of time depends on the size and density of the pellet.
"We have undertaken a series of scientific studies
to determine the reduction level of most heat-resistant
Salmonella strains in the conditioner," says Gerardo
Morantes, Bühler Inc. director of food safety. "We can
select suitable conditions which will result in a reduction
level of bacteria, with good pellet quality and optimal energy use - balancing feed safety and efficiency."
Conditioners inject steam at a specific pressure that
helps the feed mash reach a high temperature - above 80
to 85 C. The specific relationship between time and temperature to completely eradicate a pathogen or toxin varies
depending on the ingredients and pellet density. Achieving
this time and temperature relationship provides a safe feed
that also meets the U.S. Food and Drug Administration's
(FDA) food safety and quality requirements for food producing animals.
In addition to using processing equipment as a "kill
step," manufacturers have also designed machines that are