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Table 1 Basic data description by species

From: A comparison of methods for whole-genome QTL mapping using dense markers in four livestock species

Descriptor Dairy cattle Beef cattle Sheep Horses Pigs
Nb of animals 1221 936 1067 627 764
Trait 305-day milk yield (DYD) meat tenderness fecal egg count hock osteochondrosis score length of carcass
Population structure large half-sib families, complex pedigree small half-sib families, complex pedigree F1, backcross, backcross × backcross many small families three breeds
Chr studied 1 7 12 3 17
Nb of chr markers 2854 1889 1424 2267 1672
Length (cM) 161 112 79 119 60
Heritability 0.90 0.20 0.45 0.40 0.30
  1. Nb = number; chr = chromosome; DYD = daughter yield deviation.