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Each week a new question about swine with the possibility of answering questions from previous weeks.

What does it mean that a disease spreads like an oil stain?

The disease appears simultaneously in many distant locations due to airborne transmission over long distances
The disease remains confined to a single location for a long period and then suddenly jumps to a completely unrelated region
The disease spreads progressively from an initial focus to neighboring areas in a continuous, radial, and gradual manner

Questions

27-Feb-2026 What is the role of tryptophan? 50% correct

20-Feb-2026 How is the piglet's digestive system during weaning? 33% correct

13-Feb-2026 What is intrauterine growth restriction (IUGR)? 33% correct

06-Feb-2026 Which of the following is true of precision electronic feeding in sows? 33% correct

Random questions

20-Feb-2026 How is the piglet's digestive system during weaning? 33% correct

25-Jul-2025 What size needle is appropriate for weaned piglets? 33% correct

17-Jul-2026 What is the primary cause of porcine ear necrosis? 33% correct

31-Oct-2025 What is true of a low cut-off point in ELISA testing? 33% correct

Difficult questions

28-Nov-2025 What percentage of sows in lactation follow a theoretically expected optimal feed intake pattern? 25% correct

29-Aug-2025 How does heat stress affect the intestine's digestive capacity? 17% correct

17-Apr-2026 Which of the following statements is NOT true about formic acid? 25% correct

20-Mar-2026 Canada recently approved PRRS-resistant pigs for what purpose? 25% correct