Which statement is true about sampling in large swine establishments?

• A. Two samples are required (pre-evisceration and post-chill).
• B. Sampling is optional.
• C. Samples must be randomly selected.
• D. Only post-chill samples are allowed.

Answer: (C)

Sampling in large swine establishments focuses on getting results that truly represent the entire population of carcasses being processed. The key point is that samples must be randomly selected because randomization gives every carcass an equal chance of being tested, which minimizes bias from choosing samples based on shift, processing area, or visible defects. This representativeness is essential for accurately detecting contamination and for valid interpretation of results at the lot or plant level, supporting sound food-safety decisions and regulatory compliance.

Other options aren’t correct because sampling isn’t universally fixed to exactly two samples, isn’t optional, and isn’t limited only to post-chill testing. The plan may involve different sampling points or numbers depending on the program, but random selection remains the critical requirement to ensure the results reflect the overall operation.