Fig. 2.
The exposure measurements of AM usage. The orange square applies to Finisher Unit Exposure and therefore comprises the AM usage in the finisher-rearing period in the finisher unit. Lifetime Exposure applies to the orange, green and blue squares, and therefore comprises the AM usage in the piglet-rearing period in the sow unit, the weaning-rearing period in the weaning unit and the finisher-rearing period in the finisher unit. The red square applies to Herd Exposure, and therefore comprises AM usage throughout the entire rearing period in all units.