PROBLEM TO BE SOLVED: To dramatically improve a bypass rate (small intestine arrival rate) and a small intestine absorption rate by having a high oral intake rate as a supplementary feed and maintaining a high lumen bypass protection function even after crushing by chewing. A method for producing a bypass pellet feed and a bypass pellet feed that can be produced are provided. SOLUTION: A method for producing a bypass pellet feed prepares a biological active ingredient raw material and a protective agent raw material, prepares a twin-screw screw extruder, and prepares a kneading feed path in which raw materials are a screw and a barrel. It is a narrow space where the feed is fed from the feeder to the mold while being kneaded between them. The raw material is heated by a heater, the barrel and the mold are adjusted to the desired temperature range, and the raw material is kneaded in the kneading feed path. The kneaded material is continuously fed from the kneading feeding path to the mold, the kneaded material is extruded, cut to a desired length, and pellets having a rod-shaped, rod-shaped, columnar or clump-shaped shape are obtained. obtain. [Selection diagram] Fig. 6
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