Selection of pigs over the last decades by using selection indexes which gave higher weights to feed efficiency and lean content than growth rate has resulted in reduced feed intake (Smith et al., 1991 ; Webb, 1998). Reduced feed intake is a major factor limiting higher performance levels in young pigs. Moreover, selection based on different criteria has caused large genotype differences in both mean feed intake and feed intake pattern (Schinckel, 1994). The economic optimum of feed intake capacity occurs at the level where savings in total maintenance requirements through faster growth are offset by cost of increased fat deposition 

J. L Bermejo, R. Roehe, V. Schulze, E. Kalm

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 2002. Session 10, , 10.14, 2002
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