Dear Geoff
Tr.animal Tr.dam
sets up the effects in the order
NAN direct genetic effects for Trait 1
NAN direct genetic effects for Trait 2
NAN maternal genetic effects for Trait 1
NAN maternal genetic effects for Trait 2
So if we define the variance structure for Tr.aniaml as
Tr.animal 2
4 0 US
A1A1
A1A2 A2A2
A1M1 A2M1 M1M1
A1M2 A2M2 M1M2 M2M2
animal 0 AINV
we have actually defined a structure which covers both
Tr.animal and Tr.dam
In the code above I have represented the actual variance components by the
codes A1A1 etc
Arthur
> Dear Asremlers
>
> Can anyone suggest how to specify the G lines for a model
> containing animal, maternal genetic, maternal environmental and
> the covariance between animal and maternal genetic effects?
>
> This is the model statement etc for the three effects without the
> correlation. How do I specifiy the covariance between animal and
> dam?
>
> one two ~ Trait Fixed effects !r Tr.animal
> Tr.dam Tr.ide(dam)
> 1 2 3
> 0
> Trait 0 US 1 0.1 5
> Tr.animal 2
> Trait 0 US 0.5 0.1 2.5
> animal
> Tr.dam 2
> Trait 0 US 0.1 0.1 0.1
> animal
> Tr.ide(dam) 2
> Trait 0 US 0.1 0.1 0.1
> ide(dam)
>
> Thanks
>
> Geoff Pollott
>
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Arthur Gilmour PhD mailto:Arthur.Gilmour@agric.nsw.gov.au
Principal Research Scientist (Biometrics) fax: <61> 2 6391 3899
NSW Agriculture <61> 2 6391 3922
Orange Agricultural Institute telephone work: <61> 2 6391 3815
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