Table 3.

Ethogram used for behavioral observations

Category	Behavior	Definition
Sickness Behavior	Huddling	When 3 or more pigs are touching while lying down and 50% of a pig’s body is touching another pig
Other	Active	Piglets are walking about or interacting in a nonaggressive manner with each other or their environment
	Resting	Piglets are lying, either ventral or lateral, either alone or loosely in groups, with gaps of spaces between them
	Aggressive	Piglets are engaged in agonistic interactions
	Eating/drinking	The piglet has its nose in the feeder or its mouth on the waterer
	Nonvisible	When piglet moves out of view and cannot be observed