Table 3.

Effects of piglet sex and presence of at least one mummified litter mate on traits at the piglet level

Piglet sex	Male	Female	P value
HEAD CLASS	0.168 ± 0.009	0.194 ± 0.009	0.005
Ind BWT (g)	1452 ± 16	1411 ± 16	< 0.001

Mummified litter mate	No	Yes	P value
HEAD CLASS	0.168 ± 0.009	0.193 ± 0.0111	0.040
Ind BWT (g)	1452 ± 15	1411 ± 17	0.007

HEAD CLASS = head morphology (score = 0 normal to 1 IUGR head morphology)

Ind BWT = individual birth weight

All standard errors (± SEM) are from a 2-variate model