Common Ovine and Caprine Diseases Flashcards
What is common in sheep and goats playing or in rut?
Big head
What is the causative agent of Big Head?
Clostridium novyi
C. sordellii
C. chauvoei
What are the clinical signs of Big Head?
Head butting and fighting causes bruising or laceration and edematous swelling
How is Big Head treated?
Antibiotics –> Procaine penicillin
What antibiotic cannot be used in large animals?
Metronidazole
What is the causative agent of black disease?
Clostridium novyi Type B
- Found in the soil and spores are ingested
- Bacterial toxins cause liver necrosis
The presence of what parasite predisposes sheep and goats to liver damage?
Liver flukes (Fasicola hepatica)
What are the clinical signs of Black Disease?
Respiratory distress
Anorexia
Fever
Often found dead
What is the treatment for Black Disease?
Tetracycline LA200
How is Black Disease diagnosed?
Culture (gram-positive organism)
Necropsy
How is Black Disease prevented?
Vaccine
Prevent liver flukes
What is considered a reproductive disease because it causes abortions?
Brucellosis
What is the causative agent of Brucellosis?
Brucella ovis & Brucella melitensis in sheep
Brucella melitensis & Brucella abortus in goats
What are the clinical signs of Brucellosis?
Abortion Epididymitis Lameness Mastitis Diarrhea Depression
How is Brucellosis diagnosed?
Agglutination tests or complement fixation
How is Brucellosis treated?
It is not
Is Brucellosis zoonotic?
Yes
What is the causative agent of Caseous Lymphadenitis?
Corynebacterium pseudotuberculosis
Abscessation of lymph nodes
Abscesses in internal organs
What are the clinical signs of Caseous Lymphadenitis?
Dyspnea
Tachypnea
Cough
Weight Loss
How is Caseous lymphadenitis diagnosed?
Culture from transtracheal wash
Radiographs
Necropsy (walled off abscess)
What is the treatment of Caseous lymphadenitis?
Management
What reportable, reproductive disease is spread through oronasal contact with aborted tissues, vaginal discharge and contaminated neonates?
Chlamydophilosis
What is the causative agent of Chlamydophilosis?
Chlamydophila abortus (Chlamydia psittaci)
What is Chlamydophilosis otherwise known as?
Enzoonotic Abortion in Ewes
What are the clinical signs of Chlamydophilosis?
Abortion Weak or still born lambs Pneumonia Keratoconjunctivitis Epididymitis Polyarthritis
How is Chlamydophilosis diagnosed?
ELISA
Fluorescent antibody staining
PCR
Culture isolation
How is Chlamydophilosis treated?
Oxytetracycline
Isolation of females that have aborted
Fetal tissue or placenta should be burned or buried
Management
What is the causative agent of Clostridium perfringens
Clostridium perfringesnes
What are the clinical signs of Clostridium perfringens?
Diarrhea
What are the types of Clostridium perfringens and what do they have to do with?
A, B, C,D
Has to due with the toxins
Type B Clostridium perfringens
Lamb dystentery
Type C Clostridium perfringens
Most commonly affects goats
Type D Clostridium perfringens
Usually seen in feedlot lambs
Associated with high concentrate diet
How is Clostridium perfringens diagnosed?
Clinical signs
Necropsy
How is Clostridium perfringens treated?
Management