Rolled oats are desirable in some baby pig diets. Roasting And Extruding Roasting and extruding are used primarily to process soybeans. Raw soybeans contain toxic compounds that reduce pig performance. Soybeans must be heated to destroy these compounds. The ideal cooking time and temperature depends on the equipment and moisture content of the soybeans.
Roasters use an external source of heat, usually gas.
Extruders use heat generated by the soybean kernel. Extruders subject soybeans to extremely high pressure, creating heat. An exterior source of heat is often used as a precaution. Both methods do an adequate job of processing soybeans. The availability of amino acids is similar, as is the performance of pigs fed extruded or roasted soybeans.