Figure 10. Total active behavior (min/2 hr) for indoor- and outdoor-reared pigs. SE=2.35; P=0.006.

Figure 10.  Total active behavior (min/2 hr) for indoor- and outdoor-reared pigs.  
 SE=2.35; P=0.006.
Morrow-Tesch, Julie. "Environmental Enrichment for Dairy Calves and Pigs," Animal Welfare Information Center Newsletter, 7(3):3-8, Winter 1996/1997.