Non-enteric Gram +ve Part I

Question 1

Important haemophilus species

Answer 1

• H. felis
• H. parasuis
• H. paracuniculus
• H. haemoglobinophilus
• H. aegypticus

Question 2

Most important disease in swine

Answer 2

H. parasuis

Question 3

How do you prevent H. Parasuis in naive herd?

Answer 3

• serotype characterization of prevalent strain so right vaccine is chosen
• autogenous vaccine from representative prevalent serotype

Question 4

How is the autogenous vaccine prepared?

Answer 4

Isolate the bacteria/virus from the infected host and inject vaccine into other animals

Question 5

Histophilus somni causes

Answer 5

Thromboembolic meningoencephalitis (TEME) in feedlot cattle

Question 6

Organs histophilus somni mostly affects are

Answer 6

CNS

• causes brown necrosis in multiple foci

Question 7

Steer calf was recumbent in AM and died later that day; brain had gross lesions of vascular thrombosis. What is the causative agent?

Answer 7

Histophilus somni

Question 8

Disease caused by actinobacillus lignieresii

Answer 8

Wooden tongue in ruminants

Question 9

What predisposes animals to wooden tongue?

Answer 9

Trauma

Question 10

What are the clinical signs of wooden tongue disease?

Answer 10

• lesions w/ odorless pus
• tongue protruding from mouth
• hard masses on the tongue

Question 11

How do you diagnose wooden tongue?

Answer 11

• see sulfur granules in exudate
• gram -ve bacteria in CaPO4
• inflammatory (club like filaments) debris -aka- splendore hoeppli rxn

Question 12

How to differentiate wooden tongue from lumpy jaw?

Answer 12

Lumpy jaw granules are more yellow and have gram +ve bacteria that branches

Question 13

Treatments for wooden tongue

Answer 13

• surgical drainage
• tetracyclines
• sodium iodide or penicillin as a secondary measure