ICVA Swine Production Medicine 2

Question 1

Which pathogen is the primary cause of Porcine Reproductive and Respiratory Syndrome (PRRS)?

Accepted Answer

Arterivirus

Answer

PRRS is caused by an arterivirus (PRRSV) affecting reproductive performance in sows and respiratory disease in growing pigs.

Question 2

What is the recommended gilt development program age for first breeding in commercial swine operations?

Accepted Answer

175–210 days

Answer

Gilts are typically bred for the first time at 175–210 days of age, after adequate exposure to boar stimulation and body weight targets are met.

Question 3

Which nutritional deficiency most commonly causes posterior paresis ('downer sow syndrome') in lactating sows?

Accepted Answer

Calcium and phosphorus imbalance

Answer

Calcium and phosphorus imbalances leading to hypocalcemia are the most common nutritional cause of posterior paresis in high-producing lactating sows.

Question 4

In swine, Actinobacillus pleuropneumoniae primarily affects which organ system?

Accepted Answer

Respiratory tract

Answer

A. pleuropneumoniae causes fibrinous, hemorrhagic, necrotizing pleuropneumonia in swine, primarily affecting the respiratory tract.

Question 5

What does the term 'wean-to-service interval' (WSI) measure in swine reproductive management?

Accepted Answer

Days from weaning sows to their next successful mating

Answer

WSI measures the number of days from piglet weaning to the next successful mating of the sow, with a target of 4–7 days.

(ICVA) International Council for Veterinary Assessment Practice Test

(ICVA) International Council for Veterinary Assessment Practice Test

ICVA Swine Production Medicine 2