Method for preparing granular distilled grain breeding pig compound feed

The invention belongs to the technical field of feed processing and relates to a method for preparing a granular distilled grain breeding pig compound feed. The method comprises the following steps: mixing various weighed raw materials, fully stirring, slowly adding oyster liquid, so as to obtain a breeding pig compound feed premix; granulating the breeding pig compound feed premix to prepare a crude product of the granular breeding pig compound feed by adopting a pressure granulator; rolling the crude product of the granular breeding pig compound feed in soybean or peanut meal, and preparing the granular breeding pig compound feed with a powder layer on the outer surface; and finally, drying the granular breeding pig compound feed with the powder layer on the outer surface, so as to obtain the finished granular distilled grain breeding pig compound feed. The processing and preparation process is simple, equipment is readily available, the production cost is low, and the prepared breeding pig compound feed is rich in nutrition, high in spermatogenic capacity, high in waste utilization rate and environmentally-friendly.