Johne’s disease

• Also known as paratuberculosis
• Capable of causing disease in all ruminant

a) Etiology:

• Caused by Myobacterium avium

b) Transmission:

• Manure of infected animal

c) Symptoms:

• Emaciation
• Unresponsive to antibiotics
• Normal stool with occasional diarrhea
• Low-grade fever
• Intermandibular edema
• Thickened small intestine

d) Diagnosis:

• Culture of feaces and tissue
• Microscopic examination of tissue
• Blood test, ELISA test

e) Control:

• Maintain sanitary environment
• Clean udders or dams before nursing
• Move to “Clean pastures”.
• Vaccination
• Don’t graze sheep on contaminated pasture