Treatments P100 and P200 for 21-day-old chickens presented up to 35% and 40% higher feed intake (P< 0.05), respectively,
than the control. For body mass of P100 and P200, it was 50% and 58% higher (P < 0.05), respectively, than control for
21-day-olds. In conclusion, the replacement of P. ostreatus-colonized substrate in standard diet is effective for chicken
body mass gain and production. Body mass gain increases when replacement in standard diet is higher than 10 g kg-1
of
colonized substrate. Feed conversion ratio is more effective for 21-day-old chicks when the replacement of the standard
diet is 100-200 g kg-1
of colonized substrate.