Which test must swine undergo within 30 days of traveling?

Swine must undergo a pseudorabies test within 30 days of traveling because this test is a crucial requirement for ensuring the health and safety of swine populations. Pseudorabies, caused by the Suid herpesvirus 1, can have significant implications for herd health and can spread rapidly among swine, leading to severe economic losses in affected farming operations. The requirement for testing within a specific timeframe helps to provide assurance that the animals are free from the virus before they are moved to new locations, thus preventing potential outbreaks.

The other tests mentioned, while important for different reasons, do not have the same strict requirement for testing within 30 days prior to travel of swine. Each of those diseases has its own protocols and timelines that may vary based on specific regulations, but for swine traveling, the pseudorabies test stands out as a critical and immediate concern for biosecurity.