Connectedness among five European sport horse populations

被引：23

作者：

Hellsten, E. Thoren ^{[1
]}

Jorjani, H. ^{[1
,2
]}

Philipsson, J. ^{[1
]}

机构：

[1] Swedish Univ Agr Sci, Dept Anim Breeding & Genet, S-75007 Uppsala, Sweden

[2] Swedish Univ Agr Sci, Interbull Ctr, S-75007 Uppsala, Sweden

来源：

LIVESTOCK SCIENCE | 2008年 / 118卷 / 1-2期

关键词：

Connectedness; Sport horse; Genetic evaluation; Interstallion;

D O I：

10.1016/j.livsci.2007.12.028

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

This paper is one in a series of studies treating the prerequisites for international use of nationally estimated breeding values (EBVs) of sport horse stallions. One prerequisite for effective use of national EBVs across countries (populations) is genetic connectedness among concerned populations. Thus, genetic connectedness between five sport horse populations from breeding organizations in Denmark (DWB), the Netherlands (KWPN), Sweden (SWB) and from the two German breeding organizations Hanover (Han) and Holstein (Holst) was studied. The number of stallions in common (NSC), genetic similarity (GS), variance of the differences between estimated country effects (CEV) in two organizations and correlation between estimates of country effects (CEC) were used as measures of the genetic connectedness between organizations. Stallions with progeny tested in performance tests for young horses in at least one of the five organizations were used. The material included 2457 stallions, born between 1952 and 1997, for which 49446 progeny had been tested in the five breeding organizations. The numbers of stallions with offspring that had been tested in two, three, four and five of the participating organizations were 218, 58, 25 and 5, respectively. The material was arranged into groups according to birth-year of the stallion. Values for NSC, GS, CEV and CEC were calculated for each group to investigate whether there was any difference or trend in genetic connectedness over time. The same measures were also calculated for the whole data-set, considering all available information on pedigrees and progeny. Genetic connectedness was found between all participating organizations in all groups and grew stronger over time. The results were on a similar level to or better than comparable results for Icelandic horses and dairy cattle; they suggest that estimation of genetic correlations between similar traits tested in different organizations is feasible. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：147 / 156

页数：10

共 18 条

[1]

ARNASON T, 2004, 55 ANN M EAAP BLED S

[2]

ARNASON T, 2001, 52 ANN M EAAP BUD HU

[3]

BRUNS E, 2004, 55 ANN M EAAP BLED S

[4] IDENTIFYING ALL CONNECTED SUBSETS IN A 2-WAY CLASSIFICATION WITHOUT INTERACTION [J].

FERNANDO, RL ;

GIANOLA, D ;

GROSSMAN, M .

JOURNAL OF DAIRY SCIENCE, 1983, 66 (06) :1399-1402

[5]

FIKSE WF, 2002, PUBLICATION AGRARIA, V339

[6] A simulation study of the effect of connectedness on genetic trend [J].

Hanocq, E ;

Boichard, D ;

Foulley, JL .

GENETICS SELECTION EVOLUTION, 1996, 28 (01) :67-82

[7] Review of genetic parameters estimated at stallion and young horse performance tests and their correlations with later results in dressage and show-jumping competition [J].

Hellsten, E. Thoren ;

Viklund, A. ;

Koenen, E. P. C. ;

Ricard, A. ;

Bruns, E. ;

Philipsson, J. .

LIVESTOCK SCIENCE, 2006, 103 (1-2) :1-12

[8] Data subsetting strategies for estimation of across-country genetic correlations [J].

Jorjani, H ;

Emanuelson, U ;

Fikse, WF .

JOURNAL OF DAIRY SCIENCE, 2005, 88 (03) :1214-1224

[9]

JORJANI H, 1999, INTERBULL B, V22, P21

[10]

Jorjani H, 2000, INTERBULL B, V25, P22

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