Genetic connections between dressage and show-jumping horses in Dutch Warmblood horses

TY - JOUR

T1 - Genetic connections between dressage and show-jumping horses in Dutch Warmblood horses

AU - Rovere, Gabriel

AU - Madsen, Per

AU - Norberg, Elise

AU - van Arendonk, Johan A M

PY - 2014/11/7

Y1 - 2014/11/7

N2 - During the last decades, the breeding practice within the Dutch Warmblood studbook (KWPN) has resulted in an increasing specialisation of horses into show-jumping (JH) and dressage (DH). The objective of this study was to describe the effect of the specialisation on the connectedness between the subpopulations of JH and DH horses registered by KWPN. The subpopulations comprised 23,800 JH horses and 18,125 DH horses, born between 1995 and 2009. Genetic similarity (GS), genetic pool in common (GCx) based on the marginal genetic contribution of common ancestors and coefficient of relationship (r) between and within subpopulations were analysed in three periods of time to describe changes in genetic connectedness between subpopulations. A decline in GS (0.97–0.45), GC0.5 (0.69–0.13) and r (0.018–0.014) in the recent years was observed. Both subpopulations have a common genetic pool; however, if the specialisation process continues, it will result in two unrelated (genetic) groups.

AB - During the last decades, the breeding practice within the Dutch Warmblood studbook (KWPN) has resulted in an increasing specialisation of horses into show-jumping (JH) and dressage (DH). The objective of this study was to describe the effect of the specialisation on the connectedness between the subpopulations of JH and DH horses registered by KWPN. The subpopulations comprised 23,800 JH horses and 18,125 DH horses, born between 1995 and 2009. Genetic similarity (GS), genetic pool in common (GCx) based on the marginal genetic contribution of common ancestors and coefficient of relationship (r) between and within subpopulations were analysed in three periods of time to describe changes in genetic connectedness between subpopulations. A decline in GS (0.97–0.45), GC0.5 (0.69–0.13) and r (0.018–0.014) in the recent years was observed. Both subpopulations have a common genetic pool; however, if the specialisation process continues, it will result in two unrelated (genetic) groups.

U2 - 10.1080/09064702.2014.975738

DO - 10.1080/09064702.2014.975738

M3 - Journal article

SN - 0906-4702

VL - 64

SP - 57

EP - 66

JO - Acta Agriculturae Scandinavica, Section A - Animal Science

JF - Acta Agriculturae Scandinavica, Section A - Animal Science

IS - 1

ER -