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Post by kansasdexters on Nov 29, 2015 9:40:17 GMT -5
Historically, there were highly regarded Dexter-Kerry cows that became some of the first registered Dexter cows, and they had white underlines and white udders. This is a photo of "Irisene", a prize winning Dexter cow from the 1890's:
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Post by kansasdexters on Nov 29, 2015 10:01:31 GMT -5
Barb, Even Angus cattle in the early 1800's had white udder and underline markings. Here is an illustration of a prize winning Angus cow from William Youatt's "Cattle; Their Breeds, Management, and Diseases", published in 1834 in London:
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zephyrhillsusan
member
Caught Dexteritis in Dec. 2009. Member of this forum since Oct. 2013.
Posts: 1,502
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Post by zephyrhillsusan on Nov 29, 2015 10:36:50 GMT -5
kansasdexters, do you know if anyone is even working on an excess white gene? Would it have to be breed specific? The last time I looked into horse color genetics, there wasn't a way to predict the size and shape of blazes and socks, or even whether they would appear on a certain offspring. That might have changed now, of course.
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Post by kansasdexters on Nov 29, 2015 10:53:00 GMT -5
zephyrhillsusan, There are several different genes that are known to produce white markings and white patterns in cattle. It isn't just a single recessive gene, and some patterns and markings are the result of a combination of these genes. Much of the white markings found in cattle is due to a multiple allelic series at the "S" locus on Bovine Chromosome 6. T.A. Olson, Animal Science Department, University of Florida, has published on this: simmental.org/site/pdf/other/olsoncolor.pdfHere is another reference: pubag.nal.usda.gov/pubag/downloadPDF.xhtml?id=53690&content=PDF
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Post by legendrockranch on Nov 29, 2015 13:28:57 GMT -5
Thanks Patti
Barb
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Post by midhilldexters on Dec 2, 2015 14:19:09 GMT -5
Many years ago I would have been on the side of testing for white, now, not so much. With the advent of the A2 testing and knowing how breeders have reacted to that, I think the breed would be in trouble if we got the White spotting gene test. Can you imagine how many animals we would lose if this happens? Not good for the breed IMHO.
Carol K
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Post by israel89 on Mar 3, 2017 6:04:56 GMT -5
Dexter cattle are a breed of miniature cattle originating in Ireland .The smallest of the European cattle breeds,they are about half the size of a tradtional Hereford and one third size of the Friesian milking cow.
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Post by kansasdexters on Mar 4, 2017 20:19:36 GMT -5
israel89 - Dexter cattle are not half the size of a traditional Hereford, nor are they 1/3 the size of a Holstein-Friesen cow. The average, mature, Dexter cow weighs somewhere between 700 and 800 pounds and measures somewhere between 38 inches and 46 inches hip height. Please don't post misinformation. The size of the Dexter breed is well documented.
Patti
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Post by littlecowfl on Mar 5, 2017 5:43:55 GMT -5
Our cow, April, has white on her tail tip as well as her belly. All her calves have been black, without any white at all. Her dam, Tina, has a little white along her udder and midline, which seemed to pass on through heifer calves (not bull calves). They didn't have as much white as she does, though. I'm not sure if that is a coincidence or not. April's pedigree has a picture (since I'm still fighting Photobucket). www.dextercattle.org/pedigreedb/ponyweb.cgi?horse=019959&HorseName=moonlit%20oaks%20april&Page=1&Sort=0
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Post by littlecowfl on Mar 5, 2017 5:54:09 GMT -5
Just out of curiosity, I know the ancient Roman cattle were white (as are traditional Italian breeds today). Is there any connection between the Romans in Celtic lands and white markings in Celtic cattle? The British Isles had Roman roads, dogs, cattle, (and other livestock) very early (invaded in 54 BC, ruled by Romans from 43 AD through 410 AD). Ireland, of course, was converted to Christianity in 432 AD, but the Irish conducted raids on the British Isles for slaves and livestock well before.
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