Impact of dietary supplementation of various levels of G-NHG on C. perfringens population in ileal digesta of broiler chickens at 7 and 14 d post challenge. Values are means with their SE in bars. PC (positive control): birds fed a basal diet and challenged with C. perfringens, NC (negative control): birds fed a basal diet, G-NHG (100, 200, 300 or 400 mg/kg)-treated groups: birds fed a basal diet supplemented with 100, 200, 300 or 400 mg/kg of garlic nanohydrogel and challenged with C. perfringens. a–f Means within the same column carrying different superscripts are significantly different at p < 0.05.