Rhodesian Ridgeback- information for breeders

The intention of this page is to supply resources to other breeders, or those interested in the breed. Please feel free to reproduce or link to any articles I or others may have written, but please acknowledge the source.I have tried to provide information on issues found in the breed through articles and links. There are 2 links at the bottom of the pages for pedigree research. For those interested in genetic analysis I use Breedmate to calculate the co-efficient of inbreeding and to generate pedigrees.

Click on the text under the Subject and link heading to follow the link to the information

Last updated June 2020

Subject and linkSourceComments
General information
The Breed Standard(s) - what we are trying to breedReview and discussion of the breed standardWritten by Vicki May 2005
Ridge gene and dermoid sinusHillbertz article from Nature Genetics, review of this belowGenetics of ridge and dermoid sinus
Comments on the Ridgeback geneDistillation of the recent scientific work done on the inheritance of the ridgeWritten by Prof Clayton Heathcock in Feb 2008, reproduced with permission
Culling, grading, breedingRhodesian Ridgeback Club of Victoria Newsletter, Aug/Sept 1988Written by Vicki, updated June 2010
Impact of early desexing and dew claw removalPapers from Dr M Christine ZinkFrom World Congress 2012
Breeding and WhelpingLowchen site with lots of linksSome links not working but useful information on ethical breeding
Ridgeback _Galloper or Trotter?Paper by Orit Nevo on the structure of the RidgebackFrom World Congress 2012
Successful breeding programsKey points for breedersInstitute of Canine Biology- lots of links
History of the Ridgeback in AustraliaWritten with JN MurrayPublished in Ridgeback Register 2009
Breeding for genetic soundnessAKC article on genetics for dog breedersMandatory reading- if you don't understand this, don't breed!
Inherited conditions
Inherited conditions in the Rhodesian Ridgeback- A Breeders perspectiveRhodesian Ridgeback Register 2009Written by Vicki- Updated 2009.
Deafness
Genetic screen now available
A new entry in 2012- reported in some lines in Europe and USASubject also discussed at the World Congress 2012
NEW Genetic test availability
Heart murmursRhodesian Ridgeback Club of Victoria Newsletter, Oct/Nov 1991Written by Vicki, updated November 2002. Inheritance of various heart murmurs is still under investigation.
DysplasiaFrom BVA site- this is the scheme used in AustraliaGood information on hip and elbow dysplasia. As of 2016 breed average is similar to Australian figures.
OFA-Hip DysplasiaOrthopedic Foundation for Animals site (USA). The OFA provides the primary scoring method for hips/elbows in the USExcellent information on a number of genetic diseases. US results here
Dermoid sinusVideo on detection of Sinus by Dr.Thomas LaubeDr.Thomas Laube is an expert on removal of
DS. Unfortunately he is in Germany,
not Australia.
Sebaceous adenitisInflammatory skin diseaseHigh incidence in RRs reported at the OFA website in the USA
HypothyroidismFrom RRCUSArticle which shows a 9% incidence in US Ridgebacks tested
Bloat- what is it?Internet site with lots of linksGeneral information on bloat
Bloat- risk factorsLatest information from Purdue UniversityA definitive source of information on this condition
Unusual Ridgeback coloursFrom Monika Pehrs excellent websitePhotos and links to information about unusual colouring
Degenerative myelopathyLink to Canine Genetic Diseases website- Canine version of Multiple SclerosisGenetic marker now available, best interpreted as a guide to another possible issue.
SLO- Symmetrical Lupoid OnchodystrophyUS web site with information this disease of the nail bedHas been seen occasional in Australian RR lines
Juvenile Myoclonic Epilepsy (JME)Genetic screeening is now available for sudden onset juvenile epilepsyPart of genetic screen for breeding
Rhodesian Ridgeback Inherited Arrhythmia (RRIVA)Genetic test for juvenile abnormal heart beatsNEW- has anyone seen this in Australia?
Wobblers syndromeVeterinary reportReported in Ridgebacks
Subarachnoid cystsVeterinary reportHas been seen in Ridgebacks and can be confused with Wobblers Syndrome
Lumbosacral transitional vertebraeCzech study. This condition can lead to pain and paralysis of the rear end.NEW 2017. I have been told this can be seen during hip dysplasia screening, something to watch for.
Health surveys
RR Club USA Health survey and genetic informationRR Club of the USAA very impressive data collection of conditions found in US Ridgebacks- our figures may vary slightly
National Rhodesian Club of Australia Health SurveyHealth and Genetics issues in Australian ridgebacks, 2006
UK Ridgeback Health SurveyPublished August 2006. New study underway
Genetic diversity recommendationsCanadian veterinary journalResearch into the link between inbreeding and longevity amongst other things
Inbreeding
Inbreeding, Australian COI AnalysisThe result of a number of years of collecting pedigrees. 10 generation pedigree analysis of 23,253 Australian RidgebacksWritten by Vicki June 2008, published in Rhodesian Ridgeback Register May 2009.
Canine diversity projectMainly articles by John Armstrong- professor of genetics and biologyGood articles, some data and lots of links
Breeding for Genetic Soundness
Pedigree analysis
RR Pedigree search- European siteMonika Pehr's excellent pedigree siteBest site for Australian RRs. Now contains my Australian database with more photos being added. Find your pedigree here!
Pedigree On-line Search Tool- POSTUS based pedigree siteBest for US dogs