title: Short communication: effect of phantom parent grouping and properties of deregression for a low heritability trait.
abstract: Properties of deregression for a low heritability trait (clinical mastitis in Sweden with heritability of 0.02) and effects of using different definitions of genetic groups in within-country deregression compared with the across-country analysis were studied. The deregression procedure was satisfactory, and the effects of different phantom parent grouping in within-country deregression compared with across-country analysis were negligible here.
mesh_terms: D000818:Animals; D001947:Breeding; D002417:Cattle / Q000235:genetics*; D002452:Cell Count; D005260:Female; D008297:Male; D008414:Mastitis, Bovine / Q000235:genetics*; D008892:Milk / Q000166:cytology; D008957:Models, Genetic; D040641:Quantitative Trait Loci / Q000235:genetics; D013548:Sweden