African swine fever (ASF) is a highly fatal viral disease that poses a severe threat to the global swine industry. Developing a safe and effective vaccine remains an urgent and complex challenge. Lactobacillus plantarum (L. plantarum), recognized as a food-grade antigen delivery vehicle, has demonstrated great promise in vaccine development and application for various infectious diseases. To overcome the weak intestinal immunogenicity and short mucosal residence of conventional vaccines,