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

Table 2

Production indexes of the control group (no suckling sound; n=15) and treatment group (suckling sound; n=15) (mean±SD) also.

Indexes	Control group	Treatment group	P-value
Total weaning weight per sow (kg)	55.86±13.57	59.05±10.99	0.20
Average weaning weight per sow (kg)	5.23±0.94	5.49±0.81	0.13
Pigs weaned per sow (number of pigs)	10.66±1.79	10.77±1.47	0.73
Litter weight gain (kg/day)	1.92±0.53	2.07±0.42	0.11
Pre-weaning mortality (number of pigs)	2.97±2.34	2.38±2.28	0.26
Pre-weaning mortality (%)	20.77±14.08	16.19±13.65	0.14
Weaning to first service interval (days)	5.35±2.76	4.41±0.82	0.02