Table 1.

Effects of dietary supplementation with GCW during gestation on reproductive performance of sows^a.

Parameter	CON	GCW	P-value
No. of litters	33	28
Litter size, No/litter
Total born	12.97 ± 2.59	12.07 ± 2.65	0.187
Born alive	12.45 ± 2.53	11.82 ± 2.56	0.337
Birth weight of litters, kg	18.36 ± 3.91	18.04 ± 3.61	0.747
Birth weight of piglets, kg	1.47 ± 0.33	1.53 ± 0.32	0.030
Birth weight distribution of piglets, % b
<800 g, %	3.89 (16)	0.91 (3)	0.010
800–1,000 g, %	4.62 (19)	5.13 (17)	0.746
1,000–1,200 g, %	8.76 (36)	10.88 (36)	0.333
1,200–1,400 g, %	18.98 (78)	19.64 (65)	0.821
>1,400 g, %	63.75 (262)	63.44 (210)	0.932

^aData on fetus and birth weight distribution of piglets are expressed as proportion of total born piglets in both groups (actual number in the group); other data are presented as mean ± SD.

^bThe birth weight distribution of piglets refers to the ratio of piglets in each weight range to the total live-born piglets in both groups.