Re: threshold model

From: Bruce Southey <southey_at_UIUC.EDU>
Date: Tue, 29 Aug 2006 08:07:10 -0500

To my knowledge a general threshold model can not be fitted in ASREML but you can fit it in Matvec. You can try a Poisson model in ASREML.

However, it really depends on what the distribution of your litter size trait is. If it is small (cattle and nonprolific sheep breeds) then you are probably better off treating it as a binary variable. If the count is large, the Normal will work just fine.


---- Original message ----
>Date: Mon, 28 Aug 2006 20:05:09 -0400
>From: Agus Susanto <asusanto_at_UOGUELPH.CA>
>Subject: threshold model
>I want to run Threshold Animal Model Analysis for my simulated litter
>size trait. The effects included say, age (fixed), parity (fixed) ,
>animal (random) and permanent environment (random). Can someone show me
>how to write the syntax of the model.
>Agus Susanto
>Department of Animal and Poultry Science
>Centre for Genetic Improvement of Livestock
>University of Guelph, Guelph, Ontario, Canada N1G 2W1
>Rm.128, Phone (519) 824-4120 X-58353
Received on Sun Aug 29 2006 - 08:07:10 EST

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