Diarrhea: Adult poops

Question 1

Which of the following about Winter Dysentery is incorrect?

a. Caused by parvovirus/panleukopenia
b. Gives Explosive D+
c. Usually happens in the winter months
d. Spontaneous recovery in 3d

Answer 1

a. parvovirus/panleukopenia

Caused by CORONA VIRUS!!!

Question 2

What are some other causes of D+ in adult cattle?

Answer 2

Copper deficiency

Ostertagia

Coccidiosis (weanlings)

Rumen acidosis

C. perfringens Types A and B in sheep

Question 3

Johne’s Dz is caused by what bact?

Answer 3

Mycobacterium paratuberculosis

Question 4

How is Mycobaterium paratuberculosis transmitted?

Answer 4

Fecal-oral transmission

Ingestion at <30 days LONG INCUBATION wont see dz until 2-5yrs

Question 5

What are the 3 types of Adult D+?

Answer 5

1. Secretory (e.coli)
2. Malabsoprtion/maldigestion (coronavirus or rotavirus)
3. PLE (John’s Dz)
   * Can also see granulomatous enteritis*

Question 6

Which of the following is not a CS for Johne’s Dz?

a. normally 2-6 yr olds
b. Normal TPR
c. good appetite
d. Severe wt gain
e. intermitten and continuous D+

Answer 6

d. Severe wt gain

Will see severe wt loss!

Small ruminants and camelids usually will not see D+, just wt loss. IF you see D+ its usually fatal!

Question 7

During necropsy on a Johne’s Dz case, what is some pathology that will see?

Answer 7

Thickened intestinal wall (corrugated mucosa esp. ileum, but also cecum and prox colon)

Enlarged mesenteric lnn

Acid-fast colonies on lymph node smears

Question 8

Which of the following the most preferred Dx method for Johne’s Dz?

a. Serology Agid and ELISA
b. Fecal Culture
c. Sx Bx of terminal ileum or lnn
d. PCR

Answer 8

Fecal culture is GOLD STANDARD

may take up to 16wks to get results

Question 9

How do you control Johne’s Dz?

Answer 9

No tx

Cull positive cows and offspring

retest every 6mo

Question 10

How do you decrease transmission of Johne’s Dz?

Answer 10

Use colostrom replacers