Research Article

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

Figure 2

Comparison of onset time for the first piglet to come to the sow’s udder to suckle 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) between groups.