Variance components, heritability estimates, and breeding values for performance test traits in Old Kladruber horsesá A., Svitáková A., Schmidová J., Přibyl J., Vostrá-Vydrová H. (2016): Variance components, heritability estimates, and breeding values for performance test traits in Old Kladruber horses. Czech J. Anim. Sci., 61: 369-376.
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The Old Kladruber horse is an important Czech genetic resource. In the current study, two categories of traits were evaluated – the first, a numerical score for Type and Gender Expression and the second, 11 traits describing performance divided into four categories: (1) Rideability (Overall Impression, Rideability), (2) Gaits (Walk, Trot, Canter), (3) Carriage Drivability (Dressage Test, Obstacle Driving Test, Marathon Test), and (4) Reliability in Tug (First Tug, Second Tug, Third Tug). The original data set contained records from 700 individuals from the period 1995–2014, each horse having 3–5 performance evaluations for the suite of traits. Our objective was to identify a suitable model for the estimation of genetic parameters and prediction of breeding values. Only one model was examined for the Type and Gender Expression trait, whereas three models were compared for the analysis of each performance trait. Criteria for choosing the most appropriate model were minimal values for the deviance information criterion (DIC) statistics, low ratios of residual variance to phenotypic variance, and maximal heritability estimates. The heritability estimate for Type and Gender Expression was 0.18. For the performance traits, the model with the fewest sources of variation (model 1) was more appropriate than two alternatives with more sources of variation. Heritability estimates from this model ranged from 0.08 to 0.40, while estimates for various performance traits from the other models were in the range 0.08–0.24. Low heritabilities for several of the performance traits suggested that selection for their genetic improvement would likely be unsuccessful. In order to maintain genetic variability, inbreeding, and fitness in the Old Kladruber population we suggest to use breeding value estimation using the heritabilities and the method presented in this paper.
Becker A.-C., Stock K.F., Distl O. (2011): Genetic correlations between free movement and movement under rider in performance tests of German Warmblood horses. Livestock Science, 142, 245-252
Druml T., Baumung R., Sölkner J. (2008): Morphological analysis and effect of selection for conformation in the Noriker draught horse population. Livestock Science, 115, 118-128
Ducro B.J., Koenen E.P.C., van Tartwijk J.M.F.M., van Arendonk J.A.M. (2007a): Genetic relations of First Stallion Inspection traits with dressage and show jumping performance in competition of Dutch Warmblood horses. Livestock Science, 107, 81–85.
Ducro B.J., Koenen E.P.C., van Tartwijk J.M.F.M., Bovenhuis H. (2007b): Genetic relations of movement and free-jumping traits with dressage and show-jumping performance in competition of Dutch Warmblood horse. Livestock Science, 107, 227–234.
Gerber Olsson Elisabeth, Árnason Thorvaldur, Näsholm Anna, Philipsson Jan (2000): Genetic parameters for traits at performance test of stallions and correlations with traits at progeny tests in Swedish warmblood horses. Livestock Production Science, 65, 81-89
Gómez M.D., Azor P.J., Alonso M.E., Jordana J., Valera M. (2012): Morphological and genetic characterization of Spanish heavy horse breeds: Implications for their conservation. Livestock Science, 144, 57-66
Janssens S., Geysen D., Vandepitte W. (1997): Genetic parameters for show jumping in Belgian sporthorses. In: Proc. 48th Annu. Mtg., European Association for Animal Production (EAAP), Vienna, Austria, 1–5.
Novotná A., Bauer J., Vostrý L., Jiskrová I. (2014): Single-trait and multi-trait prediction of breeding values for show-jumping performance of horses in the Czech Republic. Livestock Science, 169, 10-18
Olsson Elisabeth, Näsholm Anna, Strandberg Erling, Philipsson Jan (2008): Use of field records and competition results in genetic evaluation of station performance tested Swedish Warmblood stallions. Livestock Science, 117, 287-297
SOKH (2015): Studbook Regulation. Studbook of Old Kladruber Horse. Kladruby nad Labem, Czech Republic. (in Czech)
Spiegelhalter David J., Best Nicola G., Carlin Bradley P., van der Linde Angelika (2002): Bayesian measures of model complexity and fit. Journal of the Royal Statistical Society: Series B (Statistical Methodology), 64, 583-639
Suontama M., van der Werf J.H.J., Juga J., Ojala M. (2011): The use of foal and studbook traits in the breeding programmes of Finnhorse and Standardbred trotters. Journal of Animal Breeding and Genetics, 128, 114-123
Viklund Å., Thorén Hellsten E., Näsholm A., Strandberg E., Philipsson J. (2008): Genetic parameters for traits evaluated at field tests of 3- and 4-year-old Swedish Warmblood horses. animal, 2, 1832-
Viklund Å., Braam Å., Näsholm A., Strandberg E., Philipsson J. (2010): 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. animal, 4, 682-
Vicente A.A., Carolino N., Gama L.T. (2012): Genetic diversity in the Lusitano horse breed assessed by pedigree analysis. Livestock Science, 148, 16-25
Vicente A.A., Carolino N., Ralão-Duarte J., Gama L.T. (2014): Selection for morphology, gaits and functional traits in Lusitano horses: II. Fixed effects, genetic trends and selection in retrospect. Livestock Science, 164, 13-25
Vostrý L., Přibyl J., Mach K., Majzlík I. (2011): Genetic parameters estimation and breeding values prediction for linear described traitsin the Old Kladruber horse. Journal of Animal and Feed Sciences, 20, 338-349
Vostry L., Mach K., Pribyl J. (2012): Selection of a suitable data set and model for the genetic evaluation of the linear description of conformation and type description in Old Kladruber horses. Archiv Tierzucht, 55, 105–112.
Zechner P, Sölkner J, Bodo I, Druml T, Baumung R, Achmann R, Marti E, Habe F, Brem G (2002): Analysis of diversity and population structure in the Lipizzan horse breed based on pedigree information. Livestock Production Science, 77, 137-146
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