Feeding an AMP composed of Musca domestica larvae antibacterial peptide and porcine defensin at a ratio of 50:50 to weaners, Shi et al. [236] observed an improved diarrhoea score the first week post-weaning and higher daily gain, but no effect on serum IgG, IgA, and IL-1b, IL-2, IL-6. This evidence concerns the gene IL1B and Diarrhea.