Table 1. Sow performance according to sow body weight change during gestation period

Variable	BWC (d 35–70)				SEM	p-value
	Low		High
	BWC (d 70–105)					35–70	70–105	Interaction
	Low	High	Low	High
BWC (kg)
35–70	10.68	12.14	23.94	25.92	3.375	< 0.001	0.016	< 0.001
70–105	9.25	21.86	11.59	21.29	2.608	0.498	0.529	0.619
35–105	19.93	34.00	35.53	47.21	4.233	< 0.001	0.363	0.405
Lactation loss	10.53	22.33	13.84	19.58	7.302	0.938	0.082	0.811
BFC (mm)
35–70	1.60	2.76	1.56	2.42	0.495	0.442	< 0.001	0.006
70–105	0.60	1.05	0.88	1.50	0.492	0.144	0.033	0.002
35–105	2.20	3.81	2.44	3.92	0.738	0.642	< 0.001	< 0.001
Lactation loss	3.60	4.33	3.94	4.58	1.192	0.624	0.251	< 0.001
CALC
35–70	1.20	2.14	1.53	1.92	0.491	0.831	0.009	0.019
70–105	1.13	1.26	0.88	1.50	0.512	0.982	0.142	0.014
35–105	2.33	3.40	2.41	3.42	0.877	0.916	0.020	< 0.001
Lactation loss	2.88	3.79	3.78	4.75	1.107	0.096	0.094	< 0.001
FI during lactation (kg/d)	5.37	5.23	5.34	5.20	0.263	0.254	0.301	0.501
WEI (d)	5.40	5.29	5.19	5.25	0.396	0.533	0.896	0.903

BWC, body weight change; BFC, backfat thickness change; CALC, caliper score change; FI, feed intake; WEI, weaning to estrus interval.