Treating respiratory infections in chickens requires the use of effective antibiotics tailored to the specific strain of bacteria causing the illness. Common antibiotics include oxytetracycline, enrofloxacin, and tylosin. However, it's crucial to consult with a veterinarian for proper diagnosis and antibiotic selection, as misuse can lead to antibiotic resistance. Additionally, supportive care such as proper ventilation, hydration, and nutrition is essential for the chicken's recovery.