... including growth, maintenance, deposition of fat and protein, resistance to infectious agents, and reproduction (Dunnington,1990). Intense selection for one or a few of ... both types of parental pullets had reduced% HDNEP. Crossing the 2 parental populations resulted in considerable overdom-inance in both of these traits, restoring the lost ... responses, including reduced appetiteand impaired reproductive capabilities (Dunnington et al, 1984; Dunnington andSiegel, 1985). Lack of appetite in such a line developed in our...