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Flashcards in Bovine Infectious Diseases Deck (41)
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1

Anaplasmosis affects _______ animals more severely

older

2

Calves with Anaplasmosis have less severe disease

but become _________

resulting in endemic stability

chronic carriers

3

What is the etiology of Anaplasmosis?

Anaplasma marginale

Anaplasma caudatum

(Rickettsial organisms)

4

Small, round, basophilic staining bodies

marginally located in the stroma of RBCs

are characteristic of this infectious disease

Anaplasmosis

5

Where does Anaplasma replicate in ticks?

In tick SALIVARY GLANDS

6

Calves < ______ months of age

are mildly affected by Anaplasmosis

and become chronic carriers

<6 months

7

What are the stages of pathogenesis of Anaplasmosis?

Incubation

Developmental

Covalescence

Carrier Stage

8

Incubation stage of Anaplasmosis

usually lasts ______ weeks

3 - 8 weeks

9

This stage in the pathogenesis of Anaplasmosis

lasts 4 - 9 days during which most signs are present:

fever (105-106F), icterus, dehydration, weakness

Developmental stage

10

The convalescence stage of Anaplasmosis

lasts ________ days

30 - 60 days

11

What is the earliest clinical sign of Anaplasmosis?

Decreased milk production

12

T/F:

Hemoglobinuria is a common finding in animals with Anaplasmosis

FALSE!

You do NOT see hemoglobinuria in Anaplasmosis

13

Anaplasmosis is an ________ disease,

meaning if you see one animal with it, the rest are usually subclinical

Iceberg

14

What Abx is used to treat Anaplasmosis?

Oxytetracycline

15

Oxytetracycline only works BEFORE the ______ stage

in the treatment of Anaplasmosis

replicative

 

USE DURING INCUBATION STAGE

16

After treating with Oxytetracycline for Anaplasmosis,

how many days is milk withdrawal?

2 - 3 days

17

Texas Tick Fever, discovered on King Ranch,

is better known as

Babesiosis

18

What is the etiology of Babesiosis?

B. bigemina

B. argentina

B. bovis

19

The incubation period of Babesiosis lasts _______ weeks

1 - 3 weeks

20

T/F:

An animal that survives Babesiosis becomes a carrier and is

resistant to infection

TRUE

21

Anaplasmosis vs. Babesiosis:

Icterus is more common in which?

Anaplasmosis

22

Anaplasmosis vs. Babesiosis:

Dark red to brown urine (hemoglobinuria) is present only in which?

Babesiosis

23

How do you treat Babesiosis?

IMIDOCARB

24

What is the most common sign of anthrax in cattle?

Sudden death

25

How is anthrax diagnosed?

Can see the organism on blood smear

26

How is anthrax controlled and prevented?

Vaccination in endemic areas

27

What are some rare clinical signs seen in cattle infected with

Lyme disease?

Mastitis and arthritis

28

Bovine Leukemia Virus (BLV) is very common in NA

and is seen mostly in this type of cattle

DAIRY

29

Bovine leukemia virus is an oncogenic ________ virus

RNA retrovirus

30

What do you expect to see on the CBC of an animal

infected with Bovine Leukemia Virus?

HIGH WHITE blood cell counts