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Offline HerefordGuy

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High bull prices and genomic-enhanced EPDs
« on: May 23, 2013, 03:11:18 PM »
We have seen some really high bull prices this winter and spring. I know most of these bulls are purchased for their appeal in the show ring. But, it surprises me that buyers aren't gathering more information, especially information from genomic tests. I think you would be crazy not to test.
http://steakgenomics.blogspot.com/2013/05/you-would-be-crazy-not-to-test.html

Feel free to comment on my blog why I've got this all wrong.

Offline knabe

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Re: High bull prices and genomic-enhanced EPDs
« Reply #1 on: May 23, 2013, 07:47:51 PM »
No way for users to track introgression and validate results.

Vendors never listen.  They are Violently opposed to individual marker data in the hands of users. They complain it's just too hard and would be too confusing. Each round of improvement invalidates previous set.

Gwa sucks. There needs to be another screening/testing mechanism.

Lots more.
« Last Edit: May 23, 2013, 07:49:10 PM by knabe »

Offline HerefordGuy

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Re: High bull prices and genomic-enhanced EPDs
« Reply #2 on: May 24, 2013, 03:48:51 PM »
knabe-
You didn't post this on my blog! How rude!  ;)

Unfortunately, you are asking the companies to turn over their intellectual property. It's not going to happen.

Results are validated by breed associations when they calculate genetic correlations between molecular breeding value and the trait.

With genomic selection, each round of improvement does not invalidate the previous set. The same DNA markers are used for each round of improvements. The substitution effects (ie statistical models) are adjusted and refined. If you buy a genomic selection test, the results continue to be updated. One price, multiple improvements.

If you breed Hereford cattle, the breed association has access to the raw genotypes. If you breed Angus cattle, then no you don't have access to the genotypes, only molecular breeding values. http://steakgenomics.blogspot.com/2012/12/beef-genomic-selection-strategies.html

Unless you know what the causal mutation is, you are going to be introgressing a ~150 Kbp haplotype. I pretty sure most breeders have to clue how to do this. With your experience in plant breeding, you do know how to do this. Unfortunately, I would guess you don't have the IP to do it.

Offline knabe

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Re: High bull prices and genomic-enhanced EPDs
« Reply #3 on: May 24, 2013, 08:51:36 PM »
Causal snps probably don't explain as much of the variation people Hope they will.

They reveal no ip if the have something star system.

The original star system has been invalidated.

More people would buy it but the companies have turned people off and continue to turn them off.

Too many people think the genomic companies are winking at big users on introgression.

They refuse to help so they don't get the revenue they could otherwise get other than "mandating" participation at bull tests and though the Angus association.
« Last Edit: May 24, 2013, 09:50:11 PM by knabe »

 

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