The choice feeding of pigs has been shown in many experiments to allow the individual pig to express its own needs and thereby grow more efficiently and show its full potential.
The objective of this experiment was to test whether pigs representing 7 distinct genotypes, including Large White, Landrace, Pietrain, Duroc and Meishan, were able to select their dietary crude protein (CP) in relation to energy requirements under a choice feeding regime, and whether these differences were related to growth and performance.