Biometrical Letters Vol. 44(1), 2007, pp. 17-22
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OUTLYING OBSERVATIONS IN GENETIC EVALUATION OF CHICKEN
Anna Wolc1, Małgorzata Twardowska2, Tomasz Szwaczkowski1 1Department of Genetics and Animal Breeding, Agricultural University of Poznan, Wolynska 33, 60-637 Poznan, Poland, email: tomasz@jay.au.poznan.pl 2Centre for Nucleus Breeding "MESSA" Ltd., Mienia, PL08-775 Cegłów, Poland |
A single outlying observation was excluded from the data in order to analyse its effect on goodness of fit of three egg production curves (McMillan, Ali and Schaeffer, Grossman). The adequacy of functions and analysis of residuals were obtained using several criteria. A numerical example is included.
egg production curves, outlying observations, breeding value estimation
