G*E in animal model

Dear ASREMLers

I have a general and a specific query. Generally, I have enormous trouble
designing the G and R structure lines of my ASREML jobs. Unfortunately I am
just not well enough schooled in thinking about these problems, but I find
I have to really bang my head agains the wall to figure out how to design
these bits of my jobs. Apart from teh AREML help, Asreml cookbook and
various web nortes from workshops, does anyone know of a good starting
place to learn about how to set these things up properly, from first
principles.

More specifically the problem I have been grappling with for the last while
is how to test for G*E interactions in a univariate animal model. I have
the animal model going fine, as per the below .as file, but I cannot fit
the Anim.ENV term. Does one specify Anim.ENV as a random effect, or is
there another way of doing it. Irrespective, if anyone has any insights on
how to specify the G and R structure lines in the job file, they would be
much appreciated.

Many thnaks,

Rob

Single Trait Animal Model
  Anim * !P
  Sire * !P
  Dam * !P
  SEX !A 2
  GENERAT !A
  ENV 2
  CE_PN
am_tfd.txt !SKIP1 !ALPHA !MAKE #pedigree file
am_tfd.txt !SKIP1
CE_PN ~ mu ENV !r Anim
0 0 1
Anim 1
0 0 AINV
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School of Biological, Earth and Environmental Sciences
The University of New South Wales
Kensington, Sydney 2052
NSW, Australia
PH: +61-2-9385-2587 FAUX: +61-2-9385-1558
http://www.bees.unsw.edu.au/research/groups/brookslab/brookslab.html
Received on Tue Jul 20 2005 - 11:05:54 EST