Problems with DDGS?
Borregaard LignoTech has the solutions to:
- Maximise dried distillers grains with solubles (DDGS) inclusion in pelleted feed
- Reduce your feed manufacturing costs
without slowing down your production!
Economics dictate that DDGS must be used in pelleted feeds for poultry, swine and cattle. However, accountants and formulators may not consider the hidden costs associated: a slower production rate and poor pellet quality. It is left to production managers to deal with these problems as best they can.
DDGS present three common problems to the feed manufacturer:
- DDGS vary from source to source, causing unanticipated changes in quality and production
- DDGS reduces pellet durability
- DDGS increases amperage leading to chokes and reduced production rate
Figure 1: Effect of 15% DDGS from various sources:
Variable pellet quality was demonstrated by obtaining DDGS from five different sources and formulating them in at a 15% level (see Figure 2). High levels of solubles in Sample B also caused the die to choke, and production could not be continued.
In every case adding Ameri-Bond 2X improved pellet durability! LignoBond DD normally gives the same performance as Ameri-Bond 2X.
Figure 2: Effect of DDGS and PellTech on motor load
When DDGS are added to the ration it is typical to see motor load build continuously until the die eventually chokes. Since the problem is build up on the die, addition of fat might make it possible to continue pelleting but it does not correct the problem.
The regular peaks and dips in temperature and motor load were caused by the supply bin running empty. At 11:55, with the supply bin nearly empty, the formulation was switched from a typical corn/SBM mixture to one that contained 15% dried distillers grains with solubles (DDGS). No change was made in steam addition or production rate. Motor load began to increase immediately and continued until the mill choked. Three consecutive samples had durabilities of 91.9, 93.3, and 93.9. Durability increased directly with motor load because the mill was working harder to push the pellets through.
At 12:12 the mill was restarted with a ration containing 15% DDGS and 0.5% PellTech. Production was stable and motor load was similar to the original corn/SBM mixture. Consecutive pellet durabilities were 95.0, 95.3, and 95.6. PellTech allowed the mill to run normally and pellet durability was improved even as the motor load declined.
PellTech can relieve motor load and improve pellet durability at the same time!