Hip dysplasia in Estrela mountain dogs: prevalence and genetic trends 1991-2005

The Veterinary Journal
M M D GinjaAntónio J Ferreira

Abstract

Three hundred and thirteen Estrela mountain dogs were examined for hip dysplasia (HD) using the standard ventrodorsal hip extended view, and graded into five categories (A, B, C, D and E) using the Fédération Cynologique Internationale's (FCI) scoring system. The Ortolani method was performed to evaluate hip joint laxity. Pedigree information was obtained from the Portuguese Kennel Club and the genetic trend was evaluated by calculating the mean breeding values (BVs) for the last 15 years, using the threshold model. HD was found in 66% of the dogs. There was low-moderate correlation between the results of the Ortolani test and FCI hip scores (r(s)=0.386; P<0.001). Grades of hip dysplasia were equal in both males and females (P=0.14) and in the animals' right and left sides (P=0.51). The mean BVs for HD were stable in dogs born between 1991 and 2003, and showed an improvement in 2004 and 2005. The data confirm the high prevalence and severity of HD in predisposed breeds that do not have breeding programmes in place. It also confirms an initial favourable change in BVs that is a likely consequence of the voluntary radiographic hip-screening programme.

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Citations

Nov 10, 2015·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·J MartinsM M Ginja
Jul 6, 2011·The Veterinary Journal·Bethany WilsonPeter C Thomson
Mar 1, 2012·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·J MartinsM M Ginja
Apr 30, 2009·Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·Mário M D GinjaJosé M Gonzalo-Orden
Jan 10, 2012·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·L VostrýJ Přibyl
Apr 9, 2017·The Veterinary Clinics of North America. Small Animal Practice·Jason Syrcle
Jun 19, 2019·Veterinary Clinical Pathology·Sebastián Cardona-RamírezRaúl F Silva-Molano
Jun 27, 2020·Frontiers in Veterinary Science·Ana SantanaMário Ginja
Oct 3, 2008·Acta Veterinaria Hungarica·Mário M D GinjaJorge Colaço

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