(2) control diet containing 0.20 g/kg of propolis extract, (3)
control diet containing 0.45 g/kg of probiotic, and (4)
control diet containing a combination of propolis and
probiotics (0.20 and 0.45 g/kg of diet, respectively)Additives
were substituted for ground yellow maize. All diets
(Table 2) were balanced to meet or exceed minimum
nutrient recommendations according to the NRC (1994).
Broiler chickens had ad libitum access to feed and water,