Combined with enrichment analysis, 11 KEGG pathways were enriched (P < 0.05) by the diets (Fig. 3), including cytokine-cytokine receptor interaction (bta04060), graft-versus-host disease (bta05332), Jak-STAT signaling pathway (bta04630), intestinal immune network for IgA production (bta04672), type I diabetes mellitus (bta04940), hematopoietic cell lineage (bta04640), NOD-like receptor signaling pathway (bta04621), calcium signaling pathway (bta04020), chemokine signaling pathway (bta04062), prion diseases (bta05020) and allograft rejection (bta05330). The gene discussed is CD79A; the disease is type 1 diabetes mellitus.