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Post by ponystudwoman on May 30, 2007 17:13:18 GMT
Does anyone know of a quality source of information on colour genetics in ponies?
I am familiar with 'cremello' but have never heard of 'maximum expressed sabino', which Alison informs us that her colt Ghost is.
He is lovely by the way!
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pbw
New Member
Posts: 27
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Post by pbw on May 30, 2007 17:25:17 GMT
I'd also be interested in this like what colour would a sire be if a grey mare produced a coloured foal that is dark blue/grey and white?
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alison
Junior Member
Posts: 53
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Post by alison on May 30, 2007 18:36:41 GMT
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alison
Junior Member
Posts: 53
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Post by alison on May 30, 2007 18:38:05 GMT
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Post by medwinatswpa on May 30, 2007 18:41:01 GMT
Liverpool University did a lot of work on genetics and I used them for reference during a court case about spotted ponies about 10 years ago. With spotted equines it is the fading, grey gene that should not be used as it causes the spots to disappear over time. So you should never breed spotted using grey ponies as the grey gene is dominant. The colour grey foals are born is the recessive gene i.e. the other colour gene in their DNA Right - there is my limited knowledge of genealogy! ;D Just found this www.treliverstud.co.uk/coat_colour_genetics.htmor this easy to understand one www.equinecolor.com/color.html [just wasted one hour reading this one]
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alison
Junior Member
Posts: 53
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Post by alison on May 30, 2007 18:41:22 GMT
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Post by ponystudwoman on May 30, 2007 21:40:13 GMT
Many thanks Alison and Medwin. I shall follow up the links. I understand genetics regarding colour (having exhibited and bred budgerigars!) in relation to dominant and recessive genes and how dilute forms can impact on the outcomes. However, 'maximum expressed sabino' had me stumped!
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alison
Junior Member
Posts: 53
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Post by alison on May 31, 2007 9:37:48 GMT
Ghost has two possitive sabino genes (I had him tested) so he is one huge white marking which covers his real colour completely. He will always pass one gene on to any offspring so they will all have lots of white markings, dont know what colour he is underneath I still need to do three more DNA tests.
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Post by ponystudwoman on May 31, 2007 10:51:41 GMT
I want to have all my stock DNA'd! Colour calculator is brill!
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alison
Junior Member
Posts: 53
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Post by alison on May 31, 2007 17:44:50 GMT
its addictive isnt it!
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Post by ponystudwoman on May 31, 2007 19:38:58 GMT
Alison It certainly is addictive! I've just gone through all my mares pairing them with various coloured sires and have found some interesting outcomes. It would probably be advantageous if sires when they are licenced have their DNA tested for various attributes or would this prove expensive?
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alison
Junior Member
Posts: 53
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Post by alison on May 31, 2007 21:19:47 GMT
No its not, £16 per test. I think its worth it the only reason I havent done more on ghost is I want him to be palomino under all that white but he only has a 50% chance so Im putting off the results(Im a coward).
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Post by medwinatswpa on Jun 1, 2007 7:52:11 GMT
I once attended a lecture on genetics hosted by the Avon and Border Counties WPCS. It was a breeder called Davies and his stud name was Tre.......... [could have been Trevallion or Tynval] and he was fascinating. BUT I came away with one sentence ringing in my ears "even with all my knowledge you don't always get it right!" He told a very humourous story of hours/years of travelling with a particular mare; to be covered by a particular stallion; aimed at getting a particular colour and over three years or more it did not work!
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Post by ponystudwoman on Jun 1, 2007 13:00:28 GMT
That's probability for you!
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Post by morwenstowstud on Jun 2, 2007 21:21:27 GMT
I've just been on Colour Calculator. It seems that 3 of our babies are in a minority...6.25% chance of them being born the colour they were.
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