{"id":4725,"date":"2019-11-16T05:53:08","date_gmt":"2019-11-16T05:53:08","guid":{"rendered":"https:\/\/todaysveterinarynurse.com\/?post_type=articles&p=4725"},"modified":"2022-09-14T15:21:21","modified_gmt":"2022-09-14T15:21:21","slug":"study-purebred-dogs-can-exhibit-unusual-traits","status":"publish","type":"post","link":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/news\/study-purebred-dogs-can-exhibit-unusual-traits\/","title":{"rendered":"Study: Purebred Dogs Can Exhibit Unusual Traits"},"content":{"rendered":"

West Lafayette, Ind. \u2014<\/em> If you have a purebred dog, it\u2019s likely that he or she looks fairly similar to other dogs of the same breed, especially when it comes to the color of their coats.<\/p>\n

But what happens if a purebred puppy doesn\u2019t look exactly like its siblings when it\u2019s born? Chances are, it might not be a flaw \u2013 but rather a hidden gene variant that decided to show itself.<\/p>\n

Research from Purdue University\u2019s College of Veterinary Medicine<\/a> shows that some breeds of dogs have hidden coat colors \u2013 and in some cases, other traits \u2013 that have been lurking all along.<\/p>\n

Led by Kari Ekenstedt, DVM, Ph.D., assistant professor of anatomy and genetics, and Dayna Dreger, Ph.D., the lead scientist in Ekenstedt\u2019s canine genetics research laboratory<\/a>, the team looked at a dozen different genes in 212 dog breeds. Purdue researchers, together with industry partners at Wisdom Health, analyzed data that had been initially collected by WISDOM PANEL<\/a>\u2122 for the development of canine DNA tests. The study results \u2014 \u201cTrue colors: commercially-acquired morphological genotypes reveal hidden allele variation among dog breeds, informing both trait ancestry and breed potential\u201d \u2014 was published Oct. 28 in PLOS One<\/em><\/a>.<\/p>\n

Rethinking Purebred Dog Genetics<\/h3>\n

\u201cThese are purebred dogs with traits that their breed clubs say they\u2019re not supposed to have,\u201d said Ekenstedt, whose research program focuses on canine genetics. \u201cThe message of this paper is, \u2018Hey, these gene variants exist in your breed, and if a few dogs are born with these traits, it\u2019s not caused by accidental breeding and it\u2019s not a mutt; it\u2019s a purebred showing this known genetic potential.\u2019\u201d<\/p>\n

Along with analyzing the data, researchers used standard breed descriptions from major American and international dog breed registries to determine coat colors and tail lengths that were accepted within each breed.<\/p>\n

\u201cThere was a lot of information we didn\u2019t expect,\u201d Dreger said. \u201cWhen it comes to different dog breeds, their standards are mostly based on preference and aesthetics. We make assumptions for certain breeds based on what we expect their coat colors to be.\u201d<\/p>\n

Ekenstedt says coat color genes have a significant amount of epistasis between them, meaning that what happens at one gene can mask what\u2019s happening at another gene. Because of epistasis, it\u2019s rare to see those masked genes actually expressed in a dog\u2019s coat color.<\/p>\n

One example of a \u201cfault\u201d allele \u2013 a gene variant that would cause a trait that is not allowed in a breed standard \u2013 is an allele that causes the brown color, which affects both hair pigment and skin pigment. The color is allowed in breeds like the Labrador retriever where it causes the chocolate color. However, researchers observed that in breeds where brown is not allowed, such as the Rottweiler and German shepherd, brown alleles exist at low frequencies.<\/p>\n

Another example of a fault allele is in the Weimaraner, which exists in both longhaired and shorthaired varieties. At least one dog breed organization does not allow longhaired Weimaraners while several others do allow them. Of the Weimaraners sampled in this data, the longhaired allele is present at a 4% frequency.<\/p>\n

The Tailless Gene Variant in Purebred Dogs<\/h3>\n

The same goes for other traits, too, Dreger said. For example, there are around 18 recognized breeds of dogs that have the genetic potential to be born without a tail \u2013 such as the popular Australian shepherd. But the data shows that up to 48 of the breeds analyzed possess the tailless gene variant, usually at a very low frequency; one of those breeds is the dachshund.<\/p>\n

\u201cA breeder would certainly be surprised to see a dachshund born without a tail,\u201d Dreger said. \u201cThe chances are low, but our research shows that the potential is there.\u201d<\/p>\n

Both Dreger and Ekenstedt hope the research prompts some discussions within the dog community.<\/p>\n

\u201cI want this to start science-based conversations,\u201d Dreger said. \u201cWe\u2019re not here to make decisions on what a breed should or shouldn\u2019t look like or what a breed club should do. We\u2019re here to say these are the facts, and these are the gene variants that naturally exist in these breeds.\u201d<\/p>\n

They also hope it changes some perspectives when it comes to what is to be expected with certain breeds of dogs.<\/p>\n

\u201cThere\u2019s an assumption that the standards for these different breeds of dogs are set in stone,\u201d Dreger said. \u201cPeople will often make assumptions that if it doesn\u2019t match this, it\u2019s not purebred. This data shows that there is a lot of variation in some of these breeds, and the standards are not as concrete as we expect them to be.\u201d<\/p>\n

Learn More<\/h3>\n

Did you know a subscription to Today\u2019s Veterinary Nurse<\/em> is free? All you have to do is sign up<\/a> (and renew each year)!<\/p>\n

Want to get continuing education articles and news about the veterinary nursing profession? Sign up<\/a> for the monthly enewsletter brought to you by the editors of Today\u2019s Veterinary Nurse<\/em>!<\/p>\n

Story Source<\/strong><\/p>\n

Press release provided by Purdue University<\/a>. Content may have been edited for style and length.<\/p>\n","protected":false},"excerpt":{"rendered":"

Research from Purdue University\u2019s College of Veterinary Medicine shows that some breeds of dogs have hidden coat colors \u2013 and in some cases, other traits \u2013 that have been there all along.<\/p>\n","protected":false},"author":1,"featured_media":4728,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"iawp_total_views":0,"footnotes":""},"categories":[211],"tags":[],"class_list":["post-4725","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-digital-exclusive","clinical_topics-news"],"acf":{"hide_sidebar":false,"hide_sidebar_ad":false,"hide_all_ads":false},"yoast_head":"\nStudy: Purebred Dogs Can Exhibit Unusual Traits | Today's Veterinary Nurse<\/title>\n<meta name=\"description\" content=\"The veterinary researchers hope that their findings change some perspectives when it comes to what is to be expected with certain purebred dogs.\" \/>\n<meta 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shows that some breeds of dogs have hidden coat colors \u2013 and in some cases, other traits \u2013 that have been there all along. For example, there are about 18 recognized breeds of dogs that have the genetic potential to be born without a tail \u2013 such as the popular Australian shepherd. But the data shows that up to 48 of the breeds analyzed possess the tailless gene variant, usually at a very low frequency. Photo: Vera Reva\/Shutterstock.com"},{"@type":"BreadcrumbList","@id":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/news\/study-purebred-dogs-can-exhibit-unusual-traits\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/practice-management\/pregnancy-in-the-veterinary-clinic-understanding-risks-and-safety-best-practices\/"},{"@type":"ListItem","position":2,"name":"Study: Purebred Dogs Can Exhibit Unusual Traits"}]},{"@type":"WebSite","@id":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/#website","url":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/","name":"Today's Veterinary Nurse","description":"Peer-Reviewed Journal for Veterinary Nurses and Technicians","publisher":{"@id":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/#organization","name":"Today's Veterinary Nurse","url":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/#\/schema\/logo\/image\/","url":"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2021\/10\/tvn-logo.png","contentUrl":"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2021\/10\/tvn-logo.png","width":231,"height":77,"caption":"Today's Veterinary Nurse"},"image":{"@id":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/todaysveterinarynurse","https:\/\/www.linkedin.com\/company\/todaysveterinarynurse\/https:\/\/www.linkedin.com\/company\/todaysveterinarynurse","https:\/\/www.youtube.com\/thenavc"]},{"@type":"Person","@id":"","url":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/author\/"}]}},"_links":{"self":[{"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/posts\/4725","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/comments?post=4725"}],"version-history":[{"count":1,"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/posts\/4725\/revisions"}],"predecessor-version":[{"id":7035,"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/posts\/4725\/revisions\/7035"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/media\/4728"}],"wp:attachment":[{"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/media?parent=4725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/categories?post=4725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-json\/wp\/v2\/tags?post=4725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}