Dry extruded grains for modern broilers

Hello Dr. Mavromichalis,

Great piece of information about dry extruded corn and full fat soy soy as feed ingredient for young broilers, Could you let me know about the particle size of the extruded full fat soy used in the study.

My limited experience has been that different types of soy produce different particle sizes of extruded full fat soybean meal under the same conditions of dry extrusion. As particle size also affects digestibility, how can we control particle size in this case?

Regards,
Michael.