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cpm饲料颗粒机机械培训
Pelleting of DDGS
DDGS as a Potential Alternative Protein
for Aquaculture Feeds
Kurt A. Rosentrater, Ph.D.
Lead Scientist, Bioprocess Engineer
USDA – ARS
North Central Agricultural Research Laboratory
Brookings, South Dakota, USA
1
Important Questions
• How do you add value to DDGS?
• Can you pellet DDGS?
– How?
– Alone, or in combination?
– With binders?
– Are the pellets good?
• What about other animal species?
– Aquaculture
2
Why Densify (Pellet)?
• Several advantages • Potential benefits
– Increased – Improved
• Bulk density • Feed conversion
• Flowability • Weight gains
– Angle of repose • Feed handling and
– Friction storage
– Less bridging
• Nutrient density • Disadvantages
• Palatability
– Increased
• Nutrient availability
– Reduced • Space required
• Feed waste • Pelleting equipment
• Dust • Auxiliary equipment
• Steam
• Ingredient segregation
• Electricity
• Microbial activity
• COST
Go
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