Abortion in cattle

Question 1

At what stage in pregnancy is there a cumulative fail rate of 50%? Why?

Answer 1

5-6 weeks

Due to uterine distension

Question 2

Give examples of secondary abortive agents

Answer 2

Salmonella
Listeria monocytogenes
Trueperella

Question 3

Is Leptospirosis a primary or secondary abortive agent?

Answer 3

Either!
L. hardjo = primary
L. borgpetersenii, monocytogenes = secondary

Question 4

Which abortion agents can be tested for via antibodies in bulk milk tank?

Answer 4

BVD
IBR (BHV-1)
Leptospirosis
Neospora

Question 5

What is the most common cause of infectious abortion in UK cattle?

Answer 5

Neospora

linked to dogs

Question 6

Which abortion agent is both notifiable and zoonotic?

Answer 6

Brucella abortus

Question 7

What virus causes BVD?

Answer 7

Pestivirus

Question 8

What are the types of BVD?

Answer 8

Genotype I (mild-moderate pathogenic) or genotype II (severe)
Each genotype split into cytopathic or non-cytopathic

Question 9

How is campylobacter spread?

Answer 9

Venerally

as is Tritrichomonas

Question 10

Give 3 examples of zoonotic abortive agents

Answer 10

Brucella abortus
Leptospira hardjo
Salmonella dublin