Pet food comes in dry form that is sometimes referred to as ‘kibble’, semi-moist products and treats, all of which can be produced by extrusion methods.
Dry feed for livestock is also an extruded product, being pelletized for easy metering and delivery.
Common pet food ingredients include flour, meal, corn, meat and fats with added minerals, amino acids and vitamins. Flavor enhancers, texturing agents and preservatives can also be added to improve appearance and palatability.