The study investigated the impact of extrusion and sieving on the chemical properties of palm kernel cake (PKC) and assessed the effects on metabolizable energy and protein digestibility in chickens.
PKC was treated using different temperatures for extrusion and various particle sizes for sieving, which showed a significant reduction in crude fiber content but varying effects on amino acids.
The results indicated that extrusion improved metabolizable energy by 6% and increased protein digestibility by 32%, while sieving did not affect energy but enhanced protein digestibility by 39%.