Research Article

Effect of Artificial Piglet Suckling Sounds on Behavior and Performance of Piglets and Adrenal Responses of Sows

Figure 3

Cortisol level in fecal matter of sows in the treatment group (exposed to AS sounds) and the control group (not exposed to AS sounds) in each lactating period (1-7, 8-14, and 15-21 days after parturition). Statistical significance (P<0.05) within groups.