Extruded feed makes piglets grow faster
The use of expanded pig feed with added vitamins and
enzymes created by a special kind of coater results in a 4% improvement in feed
conversion and a 4.4% better growth rate of piglets.
This conclusion was drawn from recent studies in the Netherlands, obtained
after using the Pegasus vacuum coater (VC) from Dutch company Dinnissen Process
Originally designed as a system for injecting liquids
into pellets, the Pegasus VC developed into a technology for producing pellets
and extruded products.
A Dutch feed manufacturer cooperated with
Dinnissen, to improve the results obtained from various pig feeds using the
The application is
unique and has never been used before in the production process for pig feed.
The challenge was to improve digestibility of expanded feed and to add vitamins
and enzymes as accurately as possible after the expansion process to ensure
their full activity.
Vitamins and enzymes were injected into the core
of the pellet and the pellets were then coated with a thin protective layer to
improve pellet quality and minimise abrasion during
A study with 500 piglets
at three different farms was carried out with piglet feed which had been
upgraded via the Pegasus VC. During and after the trials feed conversion (FCR),
average daily growth, pig health & uniformity, feed intake and consistency
of the faeces were calculated or measured.
Piglets started the trial
at an average weight of 7 to 8 kg and were fed weanling feed for five days
followed by the new expanded feed for three weeks. A control group received
regular feed without the expanding and vacuum coating
Results showed that
there were no differences in feed intake, but that the pigs fed the new feed
expressed better growth, had less diarrhoea problems, and needed less
This was due to a better utilisation of vitamins and
enzymes. There was less feed waste and faeces showed a firmer consistency. The
pig farmers noted that the trial group had a healthier colour and more hair than
the control group.
conclusion that could be drawn from the study was that piglets fed the new type
of feed, produced with expander and Pegasus VC, showed a 4% improvement in feed
conversion and a 4.4% improvement in growth.
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