Disease Causative Agent Type Main Symptoms Treatment Prevention
Salmonellosis (Pullorum Disease) Salmonella pullorum Bacterial Lethargy, white diarrhea, huddling, dehydration Antibiotics (sulfamethazine, ampicillin), supportive care Vaccination, biosecurity, testing breeding stock
Fowl Cholera Pasteurella multocida Bacterial Sudden death, fever, respiratory distress, swollen wattles Antibiotics (penicillin, tetracycline, sulfonamides) Vaccination, biosecurity, rodent control
Necrotic Enteritis Clostridium perfringens Bacterial Depression, diarrhea, dehydration, sudden death Antibiotics (bacitracin, lincomycin), probiotics Coccidiosis prevention, proper nutrition, hygiene
Infectious Coryza Avibacterium paragallinarum Bacterial Nasal discharge, facial swelling, conjunctivitis Antibiotics (sulfamethazine, erythromycin) Vaccination, all-in-all-out management
Mycoplasmosis (CRD) Mycoplasma gallisepticum Bacterial Respiratory rales, coughing, nasal discharge Antibiotics (tylosin, enrofloxacin, doxycycline) Mycoplasma-free breeding stock, biosecurity
Colibacillosis Escherichia coli Bacterial Septicemia, respiratory signs, peritonitis Antibiotics (enrofloxacin, amoxicillin), supportive care Hygiene, stress reduction, proper ventilation
Staphylococcosis Staphylococcus aureus Bacterial Arthritis, bumblefoot, dermatitis, septicemia Antibiotics (penicillin, novobiocin), wound care Proper flooring, wound prevention, hygiene
Fowl Typhoid Salmonella gallinarum Bacterial Anemia, yellow-green diarrhea, listlessness Antibiotics (furazolidone, sulfamethazine) Testing and culling, biosecurity, vaccination
Disease Causative Agent Type Main Symptoms Treatment Prevention
Newcastle Disease Newcastle Disease Virus (NDV) Viral Respiratory distress, nervous signs, diarrhea Supportive care only (no antiviral available) Vaccination, quarantine, biosecurity
Avian Influenza (HPAI) Influenza A virus Viral Sudden death, respiratory distress, neurological signs None (reportable disease – depopulation required) Biosecurity, surveillance, movement restrictions
Infectious Bronchitis Avian coronavirus (IBV) Viral Respiratory rales, coughing, reduced egg production Supportive care, secondary infection prevention Vaccination, biosecurity
Infectious Bursal Disease (Gumboro) Infectious Bursal Disease Virus (IBDV) Viral Depression, watery diarrhea, immunosuppression Supportive care, prevent secondary infections Vaccination, biosecurity
Marek’s Disease Gallid alphaherpesvirus 2 Viral Paralysis, tumors, vision loss, weight loss None (supportive care only) Vaccination at hatch, biosecurity
Fowl Pox Fowlpox virus Viral Skin lesions, respiratory lesions (wet form) Supportive care, antiseptic treatment of lesions Vaccination, mosquito control, biosecurity
Avian Encephalomyelitis Avian Encephalomyelitis Virus (AEV) Viral Tremors, ataxia, paralysis in chicks Supportive care only Vaccination of breeders, biosecurity
Infectious Laryngotracheitis Gallid alphaherpesvirus 1 Viral Gasping, bloody mucus, head extension Supportive care, prevent secondary infections Vaccination, biosecurity, all-in-all-out
Egg Drop Syndrome Duck adenovirus A Viral Sudden drop in egg production, thin-shelled eggs Supportive care only Vaccination, biosecurity
Chicken Anemia Virus Chicken Anemia Virus (CAV) Viral Anemia, immunosuppression, stunting Supportive care, prevent secondary infections Maternal immunity, biosecurity, vaccination