BPEX has published a pig yearbook, collecting in one place useful facts and figures, and general industry knowledge in one place.
The Yearbook includes the key indicators which contribute to overall herd performance such as:
“The number of piglets born alive per litter was significantly higher for indoor herds (11.9) than outdoor herds (10.8), although this difference may be somewhat overstated given the greater difficulty monitoring farrowing in outdoor herds.