shielded by light a dome-covered chicken house representing immune strength, vaccination efficacy, and pathogen defense

chicken dome light immunity protection vaccination disease virus pathogen outbreak vitamin immunostimulant poultry health safety biosecurity shield defense prevention agriculture farming house nutrition antibodies resilience wellness farm vaccine epidemic containment hygiene sanitation monitoring surveillance public veterinary antibacterial antiviral herbal probiotic antioxidant selenium zinc avian influenza h5n1 h9n2