1 / 24

Emphysematous abomasitis in one month old lambs

Emphysematous abomasitis in one month old lambs. Hein Snyman BVSc DVSc Anatomic Pathology Resident Department of Pathobiology Ontario Veterinary College University of Guelph. Signalment. One month old lambs (n=3) Male Rideau Arcott. History. Novice small scale operation

barny
Download Presentation

Emphysematous abomasitis in one month old lambs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Emphysematous abomasitis in one month old lambs Hein Snyman BVSc DVSc Anatomic Pathology Resident Department of Pathobiology Ontario Veterinary College University of Guelph

  2. Signalment • One month old lambs (n=3) • Male • Rideau Arcott

  3. History • Novice small scale operation • Farmer away on the weekend • Returned to find 3 lambs dead • Acute death within last 36 hours • Growing well

  4. Gross findings • Good body condition • Fibrinous peritonitis & serosal petechiae • Abomasal mucosal haemorrhage, necrosis and ulceration • Exuberant autolysis of the kidney and liver

  5. Gram + Rods

  6. Ancillary diagnostics • Faecal flotation – NAD • Bacterial culture: 4 + Clostridium perfringens 3 + Mannheimiahaemolytica • Clostridial Fluorescent antibody test (FAT) Clostridium septicum www.vet.uga.edu

  7. Diagnosis Mdx- Emphysematous, necrotizing and suppurative abomasitis, trans mural, regionally extensive, acute. Edx- Clostridial gangrenous abomasitis/Braxy Etiology – Clostridium septicum & C. perfringens

  8. Braxy • Highly fatal • Acute to peracute • Treatment rarely successful • NW Europe • Norway, Denmark, North Germany, Iceland and the Faroe islands – Bradsot • UK, Ireland, North America and Australia

  9. Braxy • Low prevalence • Cold winters • Overwintering on summer pasture • Autumn, early to mid winter • North America – early spring

  10. Braxy • Severe oedema, necrosis and gangrenous inflammation of the mucosa of the abomasum • C. septicum, C. novyi, C. perfringenstype A & C

  11. Braxy • Good condition • 6 to 18 months • Morbidity up to 50 % • Calves • Abomasal ulcers

  12. Pathogenesis • Poorly understood • Mucosal invasion and proliferation without any predisposing lesion • Coarse and frozen vegetation • Toxin production • Abomasalcanula – Glucose & VFA’s • Centrifugal emphysematous lesions Ellis T.M., Rowe J.B. and Lloyd J.M. (1983). Acute abomasitis due to Clostridium septicuminfection in experimental sheep. Aust. Vet. J. 60, 308-309.

  13. Prevention • Immunoprophylaxis • Toxoid/Bacterin • No vaccination protocol • No Clostridial vaccines

  14. References • Coetzer J.A.W., Tustin R.C. Infectious diseases of livestock, 2nd Edition, Volume Three, Section Five: Bacterial diseases, 183 Clostidiumsepticuminfections, pg. 1869-1873. • Ellis T.M., Rowe J.B. and Lloyd J.M. (1983). Acute abomasitis due to Clostridium septicuminfection in experimental sheep. Aust. Vet. J. 60, 308-309. • Eustis S.L. and Bergeland M.E. (1981). Suppurative abomasitis associated with Clostridium septicuminfection. J. Am. Vet. Med. Assoc. 178, 732-734. • Songer JG. (1996). Clostridial enteric diseases of domestic animals. Clin. Microbiol. Rev. 9, 216-234.

More Related