Fig. 4. Mechanisms of probiotics improve chicken meat quality.

A variety of harmful factors attack the intestinal barrier, triggering endotoxin into the bloodstream and causing inflammatory reactions through the activation of the MAPK-Nrf2-ARE pathway resulting in the occurrence of oxidative stress and thus causing deterioration of meat quality. Probiotic supplementation can inhibit the occurrence of oxidative stress and inflammatory reactions and thus improve meat quality. The figure was created using Microsoft PowerPoint, with key elements from BioReader (https://app.biorender.com/) and Bing (https://cn.bing.com/).