[R-sig-ME] animal model: calculating heritability andevolvability from sire effects

[David Duffy]

On Wed, 28 Dec 2011, mikhail matz wrote:

> Hello Paul -
>
> the problem is, I am not sure that the built-in "animal" modeling in 
> MCMCglmm fits my case. I am not measuring values of my traits in 
> individual animals. Instead, I am measuring averages for full-sib 
> families (coral larvae are quite small, so I am measuring them in 
> batches). Even though I can build a pedigree for my families, denoting 
> each full-sib family as an "animal", this would not be correct since, 
> for example, "half-sibs" (in my case, crosses sharing one parent) would 
> share 1/2 of the genes, not 1/4 as would be the case for individual 
> half-sib measurements. Does it make sense?...
>

So you know the trait values for both parents? so you can do a midparent 
regression?  And you don't or can't measure the within-sibship variance?


Cheers, David Duffy.

-- 
| David Duffy (MBBS PhD)                                         ,-_|\
| email: davidD at qimr.edu.au  ph: INT+61+7+3362-0217 fax: -0101  /     *
| Epidemiology Unit, Queensland Institute of Medical Research   \_,-._/
| 300 Herston Rd, Brisbane, Queensland 4029, Australia  GPG 4D0B994A v