Re: Genetic trends
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Re: Genetic trends

Dear Yobe,

One approach to estimating genetic trends is to calculate the
average EBV for cows born in a particular year.  This approach
assumes you have EBV's for all (or a random [unselected] sample)
of animals and have estimated them in an animal model over several
generations.  This would be a two stage apporaoch
and care must be taken that changes in management over time do not
bias the results.


> X-Authentication-Warning: petidomo set sender 
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> From: "yobe mtonga" <>
> To:
> Subject: Genetic trends
> Date: Mon, 04 Sep 2000 10:34:30 CAT
> Mime-Version: 1.0
> This is the firs time that I am using asreml. I need some advise on how to 
> obtain genetic trends on milk yield.
> I will appreciate your help.
> yours
> Yobe
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Arthur Gilmour PhD        
Principal Research Scientist (Biometrics)            fax: <61> 2 6391 3899
NSW Agriculture                                           <61> 2 6391 3922
Orange Agricultural Institute             telephone work: <61> 2 6391 3815
Forest Rd, ORANGE, 2800, AUSTRALIA                  home: <61> 2 6362 0046

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