Brassica rapa L. polysaccharides exert immunomodulatory effects through TLR4-mediated MyD88-dependent signalling pathways both in vitro and in vivo

Brassica rapa L. polysaccharide (BRP) modulates immune activity and enhance antioxidant capacity in vertebrates, however, its potential effects in poultry have rarely been reported. This study aimed to investigate the effects of BRP supplementation on immune and antioxidant factors for the yellow-feathered quails. Furthermore, transcriptome sequencing was conducted to study the effect of BRP supplementation on the expression of immune genes in the spleen of yellow-feathered quails.