However, piglets from the negative control group had lower IgG concentration than those from the
supplementation with 15 mL of sow colostrum orally administered to piglets within 4 h after the farrowing was completed and no oral supplementation groups (5.41 ± 2.320 vs. 30.60 ± 1.582 and 21.53 ± 0.951 mg/mL, respectively; P < 0.001 in both cases). Allocating small piglets to the same litter through cross-fostering had a negative effect on mortality and did not improve litter CV of BW at weaning. Colostrum supplementation of SP piglets improved IgG blood level on d 4. In addition, in nonhomogenized litters, colostrum supplementation of SP piglets might be a good management strategy to improve litter performance.