Comparison of the effect of Dianthus extract, Protexin probiotic and Virginamycin on performance, blood metabolites, microbial community and intestine histopathology of broilers

This experiment was conducted to investigate the effects of dietary dianthus extract, virginiamycin and Protexin probiotic on the growth performance, blood metabolites, microbial community and small intestine histopathology of male broilers from 1 to 42 days of age. A total of 240 Ross male broilers were randomly distributed to 40 experimental units and 6 dietary treatments (4 replicates with 10 birds in each).Treatments were included control (basal diet), basal diet嘪碚鬧 antibiotic, basal diet Protexin probiotic, basal diet 100 mg dianthus extract, basal diet 300 mg dianthus extract and basal diet 450 mg dianthus extract per kg of diet.The result showed that the average body weight gain of broilers fed with Virginiamycin, Protexin,150 and 300 mg dianthus extract was significantly more and feed conversion ratio was less than control group in all periods (P