Two groups of 44 d old pigs were compared using a completely randomized design. Pigs were tested for 5 min and vocalization, defecation and activity level were recorded. There was large variation in the number of vocalizations regardless of treatment. Due to this variablility, no treatment differences were detected. Higher levels of activity usually suggest less anxiety and more interest in exploration of the environment.
Defecation indicates an increase in anxiety in a novel situation.