Fish Nutrition and Feed Technology (2+1)

Unit 10 - Methods of feed formulation and manufacturing

10.6.2.Benefits of extrusion

• The heat and pressure created in the barrel can destroy harmful organisms such as salmonella
• The raw material is expanded; Starch is gelatinised and oil cells are ruptured (improved digestibility in young animals).
• The heat and pressure deactivate destructive enzymes such as those that cause rancidity.
• Increase availability of carbohydrates.
• Neutralises growth inhibitors.
• Increase availability of sulphur amino acids.Improves palatability.