Estimated parameters of field performance testing of mares from the Dutch Warmblood riding horse population

Huizinga, H.A; Boukamp, M; Smolders, G.

doi:10.1016/0301-6226(90)90066-f

Cited by 22 publications

(21 citation statements)

References 5 publications

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“…The highly positive genetic correlations between the different gaits (0.43 to 0.68 and 0.58 to 0.75, respectively) showed good agreement with other studies (Huizinga et al, 1990;Schade, 1996;Bö sch et al, 2000;Dietl et al, 2005;Lü hrs-Behnke et al, 2006;Ducro et al, 2007). Between the two jumping traits, jumping technique and temperament for The sum of type, head-neck-body, correctness of legs, walk at hand and trot at hand.…”

Section: Genetic Analyses Of Young Horse Tests In Swedensupporting

confidence: 90%

“…The same pattern has been reported by other authors (Huizinga et al, 1990;Schade, 1996;Bö sch et al, 2000;Gerber Olsson et al, 2000;Lü hrs-Behnke et al, 2006;Ducro et al, 2007). Walk and trot seem not to be genetically related to jumping traits (0.07 to 0.25 for RHQT and 20.05 to 0.03 for YHT).…”

Section: Genetic Analyses Of Young Horse Tests In Swedensupporting

confidence: 88%

“…In RHQT, gaits under the rider also showed moderately high heritabilities (0.38 to 0.48). The heritabilities estimated for dressage-related traits in this study are in the same range as in other studies based on data from field performance tests of young horses (Huizinga et al, 1990;Brockmann, 1998;Bö sch et al, 2000;Lü hrs-Behnke et al, 2006;Ducro et al, 2007;Stock and Distl, 2007). For jumping traits, the current study showed similar (YHT) or somewhat lower (RHQT) heritabilities.…”

Section: Heritabilities and Variances For Traits In Yht And Rhqtsupporting

confidence: 85%

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Genetic parameters for traits evaluated at field tests of 3- and 4-year-old Swedish Warmblood horses

Viklund

Hellsten

Näsholm

et al. 2008

Animal

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There are two types of 1-day field tests available for young Swedish Warmblood sport horses; one test for 3-year olds and one more advanced test for 4-year olds. Conformation, gaits and jumping ability are evaluated at both tests. Studies on various genetic parameters were based on about 20 000 tested horses. The data for 4-year olds consisted of 30 years of testing. The aims of the study were to estimate genetic parameters for results from different time periods, and to estimate heritabilities for, and genetic correlations between, traits scored in the two tests. The judgement of traits was shown to have been changed during the 30 years of testing, resulting in changes in higher heritabilities in, and stronger genetic correlations between, later time periods. In the first time period, records showed higher residual and lower genetic variances than in the subsequent time periods. Genetic correlations between traits recorded in the first and last time period deviated considerably from unity. Further studies are needed to investigate how to treat data from the early period in genetic evaluations. Heritabilities were moderate to high for conformation traits (0.24 to 0.58) at both types of tests, except for correctness of legs (0.08). The heritabilities for gait traits were also moderate to high (0.37 to 0.53). For jumping traits, the heritabilities ranged between 0.17 and 0.33. The highly positive genetic correlations (0.82 to 0.99) between corresponding traits tested at the simpler test for 3-year olds and at the ridden test of 4-year olds implied that it would be desirable to include the test results of 3-year olds into the genetic evaluation as breeding values for Swedish Warmbloods for many years has only been based on results from 4-year olds.

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Section: Genetic Analyses Of Young Horse Tests In Swedensupporting

confidence: 90%

Section: Genetic Analyses Of Young Horse Tests In Swedensupporting

confidence: 88%

Section: Heritabilities and Variances For Traits In Yht And Rhqtsupporting

confidence: 85%

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Genetic parameters for traits evaluated at field tests of 3- and 4-year-old Swedish Warmblood horses

Viklund

Hellsten

Näsholm

et al. 2008

Animal

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“…The importance of canter for show jumping is also reported by Huizinga et al (1990) Genetic correlations between jumping traits at RHQT and dressage competition results were low negative to low positive. In the study by Wallin et al (2003) the genetic correlations were low, but positive.…”

Section: Changes In Competition Traitsmentioning

confidence: 84%

“…In that study there were three to four different subtraits for each gait, and the genetic correlations with dressage varied from 0.05 (correctness in walk) to 0.67 (elasticity in trot). Huizinga et al (1990) estimated genetic correlations between field performance test of mares and competition and found canter to be the gait highest correlated to dressage (0.36). Yet, this correlation was low compared with other studies.…”

Section: Changes In Competition Traitsmentioning

confidence: 99%

Genetic variation in competition traits at different ages and time periods and correlations with traits at field tests of 4-year-old Swedish Warmblood horses

Viklund

Braam

Näsholm

et al. 2010

Animal

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For many years, the breeding value estimation for Swedish riding horses has been based on results from Riding Horse Quality Tests (RHQTs) of 4-year-olds only. Traits tested are conformation, gaits and jumping ability. An integrated index including competition results is under development to both get as reliable proofs as possible and increases the credibility of the indexes among breeders, trainers and riders. The objectives of this study were to investigate the suitability of competition data for use in genetic evaluations of horses and to examine how well young horse performance agrees with performance later in life. Competition results in dressage and show jumping for almost 40 000 horses from the beginning of the 1960s until 2006 were available. For RHQT data of 14 000 horses judged between 1988 and 2007 were used. Genetic parameters were estimated for accumulated competition results defined for different age groups (4 to 6 years of age, 4 to 9 years of age and lifetime), and for different birth year groups. Genetic correlations were estimated between results at RHQT and competitions with a multi-trait animal model. Heritabilities were higher for show jumping than dressage and increased with increasing age of the horse and amount of information. For dressage, heritabilities increased from 0.11 for the youngest group to 0.16 for lifetime results. For show jumping corresponding values increased from 0.24 to 0.28. Genetic correlations between competition results for the different age groups were highly positive (0.84 to 1.00), as were those between jumping traits at RHQT and competition results in show jumping (0.87 to 0.89). For dressage-related traits as 4-year-old and dressage competition results the estimated genetic correlations were between 0.47 and 0.77. We suggest that lifetime results from competitions should be integrated into the genetic evaluation system. However, genetic parameters showed that traits had changed during the over 35-year period covered due to the development of the sport, which needs to be considered in future genetic evaluations.Keywords: riding horses, dressage, show jumping, performance test, genetic parameters ImplicationsTo estimate reliable breeding values of Swedish Warmblood horses and to reduce bias due to pre-selection of horses for competition, it is important to integrate all available information from both young horse tests and competitions. Lifetime competition results are recommended and high genetic correlations were estimated between results in competition and results from tests of 4-year-old. The equestrian sport has changed during the 20th century, and this study shows that competition results do not mean the same throughout the 35-year long period of recording. Future studies will investigate how to handle competition data from different time periods in genetic evaluations.

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

et al. 2006

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Estimated parameters of field performance testing of mares from the Dutch Warmblood riding horse population

Cited by 22 publications

References 5 publications

Genetic parameters for traits evaluated at field tests of 3- and 4-year-old Swedish Warmblood horses

Genetic parameters for traits evaluated at field tests of 3- and 4-year-old Swedish Warmblood horses

Genetic variation in competition traits at different ages and time periods and correlations with traits at field tests of 4-year-old Swedish Warmblood horses

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

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