This study aimed to determine the aerobicity and wilting of the fermentation process in order to obtain the best nutritional content of the king grass silase (Pennisetum purpureophoides) with the method of vacuum and non-vacuum in the process of fermenting to the content of Dry Material (BK), Rough Protein (SK), and Rough Fiber (SK). The study was conducted in November to December 2023 for the …