This experiment was conducted on study the effects of compound microecological preparation (CMP) on growth performance

immune function

antioxidation level and intestinal microflora of yellow-feathers black-bones chickens. Three hundred healthy 1-day-old chickens were randomly assigned to 5 dietary treatments (probiotics 1

probiotics 2

probiotics 2 + Chinese herbal medicine + maggot powder

Chinese herbal medicine + maggot powder and control group). The results were shown as follows： ① CMP increased ADG and F/G significantly

but had no significant effects on ADFI. ② Compared with the control group

CMP stimulated the development of organs like thymus

spleen and bursa of fabricius significantly and increased the content of IgG by 46%

the activity of LZM by 69%. ③ CMP enhanced the levels of antioxidation by increasing the activity of GSH-PX

CAT and SOD

the effect is more pronounced in the liver. ④ CMP reduced the intestinal pH distinctly and improved the probiotics proportion of intestinal microflora by 20.2%.