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.: Home > Animal Science Papers and Reports > 2006 > Volume 24 Number 4 > Iwona Rozempolska-Ruciٌska, Gra؟yna Je؟ewska, Grzegorz Ziêba, Grzegorz Niezgoda, Brygida Œlaska

Variability of estimates of performance traits and breeding value in raccoon dogs as evaluated by two models

Iwona Rozempolska-Ruciٌska, Gra؟yna Je؟ewska, Grzegorz Ziêba, Grzegorz Niezgoda, Brygida Œlaska
Department of Biological Basis for Animal Production, Agricultural University of Lublin, Akademicka 13, 20-950 Lublin, Poland
Abstract :

The study aimed at comparing the genetic parametres estimated in raccoon dogs with two models,
as well as determining precisely the dam’s effect on variation of raccoon dog performance traits and breeding value estimates. The investigations covered 17 generations of animals. The effect of factors determining the level of the estimated reproduction and performance traits was verified using the multi-factor analysis of variance and the least squares method. The covariance components for performance traits were estimated by the REML method on the basis of two multi-trait individual models, differing in the random factors considered. The first model included exclusively the random additive effect of the individual and the random effect of the animal’s specific environment. The second included additionally the random maternal additive effect.
The estimated values of genetic parametres markedly depended on the model used, significant intermodel differences occurring principally in the animals’ conformation traits. The maternal additive effect proved to be a significant source of variation for a majority of performance traits analysed.

Keywords :
breeding value / genetic parametres / maternal additive effect / raccoon dog /variation

Date Deposited : 09 Aug 2011 10:46

Last Modified : 09 Aug 2011 10:46

Official URL: http://www.ighz.edu.pl/

Volume 24, Number 4, - 2006

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