Table 3. Effects of feeding frequency on litter size and piglet performance of lactating sows during summer

Item	T1	T2	SEM	p-value
Litter size
Initial litter size	10.53	10.67	0.20	0.645
Piglets weaned	9.97	10.20	0.14	0.255
Survivability (%)	95.11	95.93	1.01	0.565
Litter performance
Initial litter weight (kg/sow)	15.92	15.64	0.28	0.309
Initial litter (kg/pig)	1.52	1.47	0.09	0.799
Piglets weaned	70.50	74.34	0.87	0.003
Piglets weaned (kg/pig)	7.12	7.31	0.13	0.287
Total weight gain (kg/sow)	54.58	58.70	0.85	0.001
Average daily gain (g/pig)	223.79	233.70	4.49	0.126

T1, 3 feeding time per day (06:00, 11:00, and 17:00); T2, 4 feeding time per day (06:00, 11:00, 17:00, and 22:00); SEM, standard error of means.