Post-pellet fat application to improve pellet durability
Published:February 25, 2019
Dr. Megharaja Manangi, senior research scientist at Novus International, discussed how producers can improve feed durability and cut costs through post-pellet fat application during the annual International Poultry Scientific Forum (IPSF) at IPPE 2019.
Interesting topic we usually buy our prestarter from Feedmills who got pelleter than after that we use our on farm mill mash feed but this time around the starter got built with no fat so we added canola oil on farm it’s really a nice firmer pellet with Absolutely no fine dry dust to gum up the chicks beak
This is a very interesting topic for feed manufacturers, specially for poultry of course but even for some high energy ruminant diets. Indeed, transferring part of the fat addition from the mixer to post-pelleting application logically improves the physical quality of the pellets (PDI, hardness). The other side of the coin will be a reduction of the flow rate of the line and/or an increase in the specific electric consumption (kWh per ton).
Having a fat coater can also allow for increasing the global fat addition (keeping the same amount in the mixer and adding 1%, 2%, 3% or even more in post-pelleting).
A second positive effect, less known, when using palm oil in PPLA is that it will stick the fines, improving again the physical quality (I could experience this in a French mill, on goat feed :) ).
The final advantage I see with the fat-coater is that it offers the ability to add other liquids, including liquid enzymes, which offers greater flexibility in formulation. Marc P.
I'm strugling the same problem with our customers, when adding several feed enzymes with different matrix values. We often run into problems with the amount of oil in commersial feeds based on Corn / Soya. I have to set a minimum on, 0,5% ~ 5 kg per ton. but it then cause problems with the calculated energi level in the diet esp. in Pre. starter and starter feeds. This is simply getting to high!
What is your experience with this?
Arne Korsbak DSM Nutritional Products Europe, Middle East and Africa
The concept is very good addition of oil post pellet will give pellet durability and also more energy to animal or birds . But chances of rancidity of fat and growth of fungal will be there if prolonged storage of feed in non conditional store .
My humble suggestion is that instead of oil or fat if you go for a mixture of soya lecithin ( digested ) and PEGR will work better for pelleted durability softening of feed . In case of this mixture chances of rancidity are there but less than oil and fat secondly mixture will give more benefits than oil and fat
thanks to everybody .
On this time, where monsoon is persist, the mixing of fats in pellet feed( Post pellet fat application) not suitable for long standing in the feeder due to the development of rancidity, which helps in production of mycotoxins and other fungal growth leads to shortening of growth.