The upcoming total ban on the use of
antimicrobial growth promoters in feed has created a whole new plethora of
substitutes, each with its unique properties. Incorporation of these live
products in pelleted feed, however, is a different story. Many of them are heat
sensitive and therefore require novel approaches in application.
A compound feed is a mixture of products of vegetable or animal
origin in their natural state, fresh or preserved, or products derived from the
industrial processing thereof, or organic or inorganic substances, whether or
not containing additives, for oral feeding in the form of a complete
feed.
Pelleting is
everything about the quality of the pellet that comes out of the die. There are
several aspects in the pelleting process that influence the pellet’s hardness,
abrasiveness, durability, etceteras.
Developing a full understanding of pellet quality and the factors that influence it is still fertile ground for research and idea development. As new ingredients become available and equipment and technological advances occur, a thorough understanding of factors affecting pellet quality will be mandatory. A literature review.
Retention
time is critical in achieving optimum preconditioning results. DDC technology
shortens this time due to excellent mixing properties. And a shorter retention
time means a higher throughput and capacity.
Pellet
quality is a major issue in Europe. With
so many different raw materials in the feed recipe feed millers have
difficulties and still make 'soft' pellets, often switching to double pelleting
to improve quality. However, with longer conditioning of the feed the same
results can be obtained, but with lower energy costs.
Pelleting
improves the digestibility of feed and makes is easier to transport. However
over the years fact and fiction have sometimes been confused. In this article
for the 10th anniversary of Feed Tech Matthias Franke and Andreas
Rey distinguish the myths from the facts in feed manufacturing in general and
pelleting in particular.
Pellets can
be produced in many different shapes and sizes. The single piece of
equipment that is responsible for the various forms of pellets in animal feed
is the die.