Figure 1.
Figure 1.

Phenotypic means by sow year of birth for total number born (TNB), mortality (MORT), and litter size at d 5 after farrowing (LS5) in the first parity (gilt results) of Landrace (line with circles) and Yorkshire (line with triangles) populations.

 


Figure 2.
Figure 2.

Mean EBV by sow year of birth for total number born (TNB), mortality (MORT), and litter size at d 5 after farrowing (LS5) in Landrace (line with circles) and Yorkshire (line with triangles) populations. The EBV were adjusted so that sows with birth year at 2003 have a mean EBV equal to 0.

 


Figure 3.
Figure 3.

Mean EBV by sow year of birth for total number born (TNB), mortality (MORT), and litter size at d 5 after farrowing (LS5) in 3 phenotypic levels of total number born: the 25% small litters (line with circles), the 50% medium litters (line with triangles), and the 25% largest litters (line with crosses) in first litter of Landrace (L-sows) and Yorkshire (Y-sows). The EBV were adjusted so that sows with birth year at 2003 have a mean EBV equal to 0 in the 50% medium litters.

 


Figure 4.
Figure 4.

Phenotypic means by sow year of birth for total number born (TNB), mortality (MORT), and litter size at d 5 after farrowing (LS5) in 3 phenotypic levels of total number born: the 25% small litters (line with circles), the 50% medium litters (line with triangles), and the 25% largest litters (line with pluses) in first litter (gilt results) of Landrace (L-sows) and Yorkshire (Y-sows).