tag:blogger.com,1999:blog-423815608168342684.post820148586227168850..comments2024-03-13T02:57:59.591-07:00Comments on Pointing Dog Blog: 'Whitemaraners' Cross-bred or Pure?Craig Koshykhttp://www.blogger.com/profile/00551849205683278959noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-423815608168342684.post-37485541144781333982015-10-26T07:40:42.795-07:002015-10-26T07:40:42.795-07:00I rescued a dog the other day that would appear to...I rescued a dog the other day that would appear to be a weimarner except that he is solid white with only a couple spots of grey. Is this possible at all?Anonymoushttps://www.blogger.com/profile/00746215562590463326noreply@blogger.comtag:blogger.com,1999:blog-423815608168342684.post-35251663383683019852014-02-04T17:51:21.364-08:002014-02-04T17:51:21.364-08:00Yes. A friendly reader sent me a link to an intere...Yes. A friendly reader sent me a link to an interesting article about white in another self-colored gundog breed, the Vizsla. It is called Understanding White and it was published in the Vizsla Canada Newsletter, Vol.7, No.4, September/October 2001. Here are a couple of passages that are about Viszlas but could just as easily be about Weimaraners:<br /><br />When discussing white, it is important to keep in mind that the presence and extent of white markings are not entirely under genetic control. As early as 1957, referring to experiments done by Sewall Wright nearly four decades earlier, Clarence Little cautioned that: “an appreciable amount of variation in the extent of body-surface pigmentation is usually non-genetic in nature.” Without discounting the primary role of genes, it seems reasonable to think that various factors other than genetic can influence the distribution of pigmentation cells or perhaps, even interrupt it at times. We know that some factors may delay the normal pigmentation process as happened with the puppy mentioned earlier and there will no doubt be cases where the process is not only delayed but interrupted altogether. These factors could be anything from environmental to nutritional. <br /><br />Being aware of (this) might assist in avoiding hasty conclusions about the parentage of some Vizslas, often from field bred strains, that exhibit a considerable amount of white. In those cases, casual observers are sometimes quick to conclude that a dog is of impure breeding and whispered accusations of crossbreeding to Pointers follow suit. Such breedings, accidental or deliberate, may indeed have taken place but we should always keep in mind that dogs with considerable amounts of white might also be produced from the breeding of two purebred Vizslas.<br /><br />Breeders whose primary selection criterion is field performance may not select against white... as rigorously as breeders whose primary focus is the show bench or may not select against it at all. If selection against (white) is not a priority with a particular breeder, it can be expected that this breeder may produce more dogs with white markings and with larger white markings than a breeder who makes selection against white markings a priority. It would be my suggestion that not a few cases of rumoured crossbreeding simply involve a purebred Vizsla...Craig Koshykhttps://www.blogger.com/profile/00551849205683278959noreply@blogger.comtag:blogger.com,1999:blog-423815608168342684.post-15832369447438509472014-02-04T16:14:23.976-08:002014-02-04T16:14:23.976-08:00Could that "white" spotted coat also pop...Could that "white" spotted coat also pop up in other purebred solid colored pointers like the vizsla?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-423815608168342684.post-14149613793863702122013-07-11T09:33:54.803-07:002013-07-11T09:33:54.803-07:00Yes, it is possible that a mutation could lead to ...Yes, it is possible that a mutation could lead to the "blue" Weim coat. But the same team that investigated the 'white' Weim also studied the DNA of Blue Weims and concluded "that the Blue Weimaraner’s origins come partially from an introduction of a “typical 377 -bp TYRP1 haplotype potentially along with a unique Y-chromosomal haplotype” which strongly suggests cross breeding"<br><br>More info here: http://justweimaraners.com/2010/09/genetic-research-on-blue-weimaraners/Craig Koshykhttp://www.blogger.com/profile/00551849205683278959noreply@blogger.comtag:blogger.com,1999:blog-423815608168342684.post-70209589933322098652013-07-10T17:19:48.746-07:002013-07-10T17:19:48.746-07:00Cool Dog. Now since it is possible for such a whil...Cool Dog. Now since it is possible for such a while colored Weim could pop up without cross breeding is it also possible that a "Blue" Weim could also have popped up without cross breeding?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-423815608168342684.post-7179427955481505542013-07-06T17:45:30.565-07:002013-07-06T17:45:30.565-07:00I know that white markings and the proposed "...I know that white markings and the proposed "Dominant White" genes have been a point of contention in dogs for some time, but I've always thought that there are multiple types of white markings just like there are in horses. Now knowing that this "Whitemaraner" is caused by a KIT-complex gene and behaves in a simple autosomal dominant manner like Appaloosa-marked horses, I'm wondering if I'm still alone in this thought!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-423815608168342684.post-22015267700767498012013-06-24T08:56:10.889-07:002013-06-24T08:56:10.889-07:00No. It is not a 'throwback'. One pup is kn...No. It is not a 'throwback'. One pup is known to be cross bred, the other has been determined to carry a 'de novo' (new) genetic mutation.<br><br>And no, the longhaired trait in Weims is NOT dominant. It is recessive. It existed in Weims long before it was accepted in the 1930's, almost certainly due to crosses with Setters in the early formative years of the breed's creation. <br><br>Long coats also appeared in many other shorthaired breeds in the past, including the GSP, Vizsla, Braque du Bourbonnais etc. But their clubs chose not to include the longhaired variant into the breed standards and bred them (almost) completely out of those breeds (it is very, very rare, but longhaired GSPs, Vizslas, Braque du Bourbonnais etc. can still occur today)<br><br>And finally, if you insist on inserting tiresome US gun politics into this discussion, please get your facts straight. No European nation bans gun ownership, and none are out to make gundog owners turn in their guns. You need to get out more.<br><br>"Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one's lifetime.”<br>― Mark Twain, The Innocents AbroadCraig Koshykhttp://www.blogger.com/profile/00551849205683278959noreply@blogger.comtag:blogger.com,1999:blog-423815608168342684.post-88697307539048675942013-06-23T20:20:24.260-07:002013-06-23T20:20:24.260-07:00I'm glad that they decided not to let the affe...I'm glad that they decided not to let the affected pup breed. I guess this is what they call a throwback. When two purebred parents have a pup with a non-typical color or coat type. I also guess that is how we have long haired Wiemies because someone line bred the trait until it was dominant then infused it back into the pure line. I really hate the trend to not dock tails or remove dewclaws because they are not allowed to in parts of Europe. You can't own guns in parts of Europe so should all gundog owners turn in their guns. Hell No!Anonymousnoreply@blogger.com