Escocito
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What I wish Genomics would do versus what it has done
Genomics has certainly been the hot button topic of the cattle breeding industry in the last several years. The Holstein breed has seen genomic giants basically put a stranglehold on the genes at the tops of the lists. This was against what was one of the initial intentions of genomics was, to find outcross sources that could compete.
Something I wish genomics would do would be to compare the genes of a bull like Bookem (99% RHA) to a bull that is 100% RHA. If they could be shown to have the same composition in their DNA then perhaps Bookem could be made to be considered purebred. This would allow all of Bookem's sons such as McCutchen and Doorman to have all purebred ancestors. What does everyone else think about this?
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20/12/2017, 19:39
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dairytalker
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Re: What I wish Genomics would do versus what it has done
i find no value in 100% vs. 99%
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21/12/2017, 17:13
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Craigalea
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Re: What I wish Genomics would do versus what it has done
What actual value does a 99% bull have vs a 100% bull?
It doesn't make them work harder, or look better.
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Cattle art and bad cow puns: http://sketch-a-bull.tumblr.com/
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21/12/2017, 23:10
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Escocito
VG85
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Re: What I wish Genomics would do versus what it has done
I am not saying there really is any difference between a 100% and a 99%. However, it is still recorded on both registration papers and in sire directories. If it didn't matter at all it would not be found in either place. Therefore, if it could be shown that genetically a 99% is the "same" as a 100%, the 99% could be upgraded to 100% status.
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2/1/2018, 22:30
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Craigalea
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Re: What I wish Genomics would do versus what it has done
http://www.wagyu.org.au/breeding-wagyu/animal-registrations/crossbred-wagyu-test/
Related reading on this topic, actually.
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Cattle art and bad cow puns: http://sketch-a-bull.tumblr.com/
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6/1/2018, 18:56
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Escocito
VG85
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Re: What I wish Genomics would do versus what it has done
Thank you Craiglea for posting this article, it is kind of what I was getting at. The only bull/bulls that would need to be done would be Ramos or Bookem and it would change so many bulls.
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8/1/2018, 19:30
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Craigalea
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Re: What I wish Genomics would do versus what it has done
Well, reading how the Wagyu works, I doubt you could get a 100% on Ramos. If you took a Fullblood Wagyu and run them against the purity data the same as a crossbred is, you may still end up with a result of, for example, 90% related to the main population. If they were from a crossbreed background you's have a 90% animal.
Cow families that do not originate from a 100%RHA family will have a higher chance of having genes that aren't in the mainstream 100% population. So I think it likely that you would end up with them being less than 99% if you ran this type of purity test.
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Cattle art and bad cow puns: http://sketch-a-bull.tumblr.com/
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9/1/2018, 3:42
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bazza20
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Re: What I wish Genomics would do versus what it has done
99% RHA issue is just really non exsistant. Who cares. It means nothing these day
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3/2/2018, 3:52
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Craigalea
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Re:
In regards to Holstein content testing, yes they can easily do it, but from what i learned the other day you still won't get a straight answer.
Take a Jersey x Swiss crossbred, and doing a content test, you may end up with 53% jersey and 53% Swiss, which adds up to 106% - the reason why this happens is the overlaps in the populations so it may be that black hoof colour, and/or other coat colour characteristics like the pale colour around the muzzle are the same in both of these breeds.
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Cattle art and bad cow puns: http://sketch-a-bull.tumblr.com/
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13/5/2018, 1:16
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