ICVA Swine Production Medicine 3

Question 1

Which vaccination strategy is most effective for controlling Mycoplasma hyopneumoniae in a continuous-flow growing facility?

Accepted Answer

Two-dose piglet vaccination at 1 and 3 weeks of age

Answer

A two-dose vaccination protocol starting at 1 week of age provides optimal protection against M. hyopneumoniae-associated enzootic pneumonia in growing pigs.

Question 2

In swine biosecurity, what does 'all-in/all-out' (AIAO) flow primarily prevent?

Accepted Answer

Pathogen cycling between older and younger age groups

Answer

AIAO management prevents older, infected pigs from continuously exposing younger, naïve pigs to pathogens, breaking disease transmission cycles.

Question 3

Post-weaning multisystemic wasting syndrome (PMWS) is primarily associated with which pathogen?

Accepted Answer

Porcine circovirus type 2 (PCV2)

Answer

PMWS is primarily associated with PCV2, causing wasting, lymphadenopathy, and immunosuppression in post-weaned pigs.

Question 4

Which disinfectant class is most effective against porcine parvovirus due to its non-enveloped nature?

Accepted Answer

Glutaraldehyde or bleach (sodium hypochlorite)

Answer

Non-enveloped viruses like PPV are resistant to many disinfectants but are susceptible to aldehydes and oxidizing agents like sodium hypochlorite.

Question 5

What is the primary route of transmission of African Swine Fever (ASF) virus in swine herds?

Accepted Answer

Direct contact with infected pigs and contaminated feed/fomites

Answer

ASF spreads primarily through direct contact with infected pigs and indirect contact via contaminated feed, equipment, and personnel (fomites).

(ICVA) International Council for Veterinary Assessment Practice Test

(ICVA) International Council for Veterinary Assessment Practice Test

ICVA Swine Production Medicine 3