Classical Swine Fever.pptx

classical swine fever

1. Classical Swine Fever SAUMYA ADIYAMAAN BVSc & AH VCRI - UDP

2. About the disease 01 Routes of Infection 02 Pathogenesis and its clinical signs 03 Gross lesions 04 Microscopic lesions 05 Diagnosis 06 Table of contents

3. About the disease 01 Highly contagious disease of pig characterized by Intestinal disturbances, diarrhea, pneumonia and skin hemorrhages

4. Swine fever , also known as Hog cholera or Swine plague , is a disease native to America. It is highly contagious and its prevalence led to the first notice of an animal disease by the federal government in 1860 Introduction

5. Etiology Only one serotype Virus family Flaviviridae Virus genus Pestivirus About the disease

6. Digestive tract Respiratory tract Conjunctiva Nasal mucosa 02 Routes of Infection

7. Incubation period : 1 to 4 days by artificial infection and 7 days in natural infection

8. The virus enters blood Pathogenesis Erythematous patches of skin and enteritis Multiplication in tonsillar tissue 03

9. Clinical signs Fits Howling

10. Clinical signs Wobbling gait Coma

11. 04 Gross Lesions 1. Intestine - Necrotic enteritis - Spherical ‘button ulcers’ – Mucosa of Caecum and Colon.

12. 2. Skin - Erythematous patches in the ventral surface of the abdomen and thorax, ears, inner aspects of thigh, perineum and snout

13. 3. Kidney – Subcapsular hemorrhages and renal cortex shows “ Turkey egg ” appearance due to petechiae.

14. Spleen - Splenic infarcts

15. 5 . Lymph node - Swollen lymph node and red in color.

16. 05 Microscopic lesion Haemorrhages may be seen in the bowman's space and interstitial areas. Button ulcer - Occurs due to infarction, develops following occlusion of small arterioles by swelling and hydropic changes in its endothelium. Splenic infarcts. Disseminated non-purulent meningo-encephalomyelitis. Croupous pneumonia

17. History Symptoms Lesions Laboratory testing 06 Diagnosis

18. Laboratory testing: Agar gel precipitation test Fluorescent antibody technique

19. Thank You !