Swine Quiz 2

The typical weaning age in commercial swine production is:

• a. 14–16 days

• b. 28-30 days

• c. 35–40 days

• d. 45–50 days

Which of the following is a major stressor during weaning?

• a. Change in temperature

• b. Separation from sow

• c. Change in diet

• d. All of the above

What is the primary goal during the finisher stage?

• a. Maximize reproductive performance

• b. Increase body weight and improve carcass quality

• c. Encourage milk production

• d. Minimize feed intake

Boars should be first used for breeding at what age?

• a. 4–5 months

• b. 6–7 months

• c. 8–9 months

• d. 10–12 months

Boars should be housed in individual pens mainly to:

• a. Save feed

• b. Prevent fighting and injuries

• c. Increase semen output

• d. Encourage social dominance

What is the normal volume of boar ejaculate?

• a. 10–50 mL

• b. 50–150 mL

• c. 150–250 mL

• d. 150–300 mL

The purpose of semen extenders is to:

• a. Kill abnormal sperm cells

• b. Increase sperm concentration

• c. Provide nutrients and buffer to maintain sperm viability

• d. Separate live from dead sperm cells

Which of the following is not a common evaluation parameter for fresh boar semen?

• a. Volume

• b. Motility

• c. Morphology

• d. Serum antibody levels

The ideal initial motility for fresh boar semen before extension should be at least:

• a. 50%

• b. 60%

• c. 70%

• d. 80%

During semen dilution, the extender should be:

• a. Warmer than the semen to prevent cold shock

• b. The same temperature as the semen

• c. Cooler than the semen to preserve motility

• d. Added without considering temperature