PROCEDE DE FABRICATION POUR PREPARATION DE CONTOURNEMENT DU RUMEN ET GRANULES OBTENUS PAR LE PROCEDE DE FABRICATION POUR LA PREPARATION DE CONTOURNEMENT DU RUMEN
[Problem] To provide: a low-production-cost production method for a rumen-bypassing agent that simultaneously protects an active ingredient from elimination and decomposition in a first stomach and improves release behavior in a target organ; and granules obtained by means of the production method. [Solution] The present invention provides a method for producing a rumen-bypassing preparation, the method involving, for example, application of vibration to a die head that has at least one spraying port that contains a molten material that combines a coating agent for the rumen-bypassing preparation and a nutrient that causes bypassing of the rumen, or application of vibration to the molten material, so as to cause the molten material to be sprayed from the spraying port.