Estimation of hip dysplasia heritability using a Bayesian animal model in Rottweiler and Golden Retriever dogs registered in the Kennel Club of Perú (2014-2024)

• María José Pastor-Talavera ^[1] ; Jorge Luis Vilela-Velarde ^[1]
  1. [1] Universidad Científica del Sur

     Universidad Científica del Sur

     Perú

     
• Localización: Austral journal of veterinary sciences, ISSN 0719-8000, ISSN-e 0719-8132, Vol. 58, Nº. 1, 2026, págs. 53-63
• Idioma: inglés
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• Resumen

  • Canine hip dysplasia (CHD) is a prevalent hereditary orthopedic disorder in which phenotypic selection often fails to identify silent genetic carriers, leading to stagnant genetic trends. This study aimed to obtain heritability estimates (h2) of CHD in Rottweiler and Golden Retriever populations in Peru to evaluate the potential for genetic improvement within the national registry. A Bayesian threshold animal model was applied to the pedigree and radio-graphic records of 383 dogs (146 Rottweilers and 237 Golden Retrievers) evaluated between 2014 and 2024 by the Kennel Club del Perú. The h2 (mean ± standard deviation) for CHD status (binary trait) was 0.60 ± 0.15 for Rottweilers and 0.65±0.14 for Golden Retrievers. These high h2 values indicate that a substantial proportion of phenotypic varia-tion is driven by additive genetic effects, exceeding estimates reported in several international populations. However, whether the observed lack of phenotypic progress reflects limitations of mass selection or other factors remains to be determined through formal genetic trend analyses. Future studies should evaluate whether implementing selection programs based on estimated breeding values could accelerate the reduction in CHD prevalence and improve the long-term welfare of these breeds in Peru