Impact of different rearing systems on growth, carcass traits, oxidative stress biomarkers and humoral immunity of broilers exposed to heat stress

Abstract The effectss of different rearing systems (RS) including cage (CRS), litter (LRS) and perforated plastic slate (PSRS) on the productive performance, carcass traits, blood hematological and biochemicsal parameters and humeral immunity in broiler chickens exposed to heat stress were investigated. A total of 270 one-day old Avian 48 chicks were randomly assigned to three equal groups, each was divided into nine replicates (each of 10 birds) housed in studied RS. Results revealed that CRS had higher (P