Nolinear mixed-effects models (nlme)

Mario Fernando CerÃ³n MuÃ±oz <mceronm <at> agronica.udea.edu.co> writes:

Do you send information about lactation curve analyse with no linear mixed
model, with fixed effects (herd, year season, parity) and random effects
(cow)?.

There is little hope that you get much more information with such a diffuse 
question. For a starter, you may check chapter 5.3.4 in Pinheiro/Bates, where  
a similar problem is handled by linear methods.

Dieter