An experiment was conducted in hot summer months with 120 broiler chicks in 5 groups which were given basal diet(BD), BD+vitaminE(200mg/Kg), BD+vitaminE (200mg/kg)+ selenium (0.15mg/ kg),BD+Tulsi(0.25%) and BD+Tulsi(0.5%), respectively. A control group of 24 birds was raised separately in stress free environment. Birds were vaccinated with ND virus and serum was assessed for humoral immune resp...
