Hi,

From: Bruce Southey <southey_at_UIUC.EDU>
Date: Mon, 10 Oct 2005 07:54:12 -0500

---- Original message ----
>Date: Thu, 6 Oct 2005 12:54:23 +0200
>From: Nicola Macciotta <macciott_at_UNISS.IT>
>To: ASREML-L_at_AGRIC.NSW.GOV.AU
>
>Dear ASREML users,
>I am trying to run a random regression model for milk yield where I would
>like to test for modeling individual random deviations wioh different
>functions, some of them are not implemented in the ASREML software. For
>example, the function proposed by Wilmink (1987, Liv. Prod. Sci.)
>
>Ydim= a + be-kdim + cdim
>
>where dim are the days in milk. The function can be linearised by setting k
>to a fixed value (0.1 for example).
>
>So the model I want to use has three terms
>
>a the intercept
>
>b that actually is (be-0.1dim )
>
>
>c x dim
>
>So my question is: how can I put this function as random within animal?
>Could be this the correct syntax of the random part of the model?
>
>r! a.animal b.animal dim.animal
>
>
>and how can I get the (co)variance matrix of coefficients?
>
>
>Thank you very much for your help
>
>Nicol˛
>
>Nicol˛ P.P. Macciotta
>Dipartimento di Scienze Zootecniche
>UniversitÓ degli Studi di Sassari
>Via De Nicola, 9
> 07100 Sassari, Italia
>tel 39.079.229298 fax 39.079.229302
>e-mail macciott_at_uniss.it
Received on Sun Oct 10 2005 - 07:54:12 EST

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