Direct, maternal and cytoplasmic variance estimates
of egg production traits in laying hens

Initial egg production (IEP), egg weight (EW) and body weight (BW) of four laying hen lines were studied. A total of 74044 individuals from six selected generations were included in the analysis. The data (after Box-Cox transformation) were used to estimate direct and maternal additive genetic variances as well as cytoplasmic variances. Estimation of variance components was performed by the derivative-free REML programs of Meyer (1989). The largest genetic variance component estimates were obtained for IEP. However, the contributions of variances from both maternal (indirect) and cytoplasmic effects to phenotypic variance were very small for all analyzed traits. It was concluded that the maternal and cytoplasmic effects studied may be omitted in laying hen genetic evaluation.

CITATIONS (2):

Multivariate analysis of mixed inheritance model of performance traits in layers using Gibbs sampling
T. Szwaczkowski, M. Szydlowski, K. Molinski, A. Dobek
Journal of Animal Breeding and Genetics

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Analysis of the impact of cytoplasmic and mitochondrial inheritance on litter size and carcass in rabbits
Nguyen Nguyen, Vladimir Brajkovic, Vlatka Cubric-Curik, Strahil Ristov, Zoran Veir, Zsolt Szendrő, Istvan Nagy, Ino Curik
World Rabbit Science

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1230-1388

Assigning DOI numbers, introducing articles from supplements and recent publications to POL-index database, maintaining anti-plagiarism detection, electronic system to proceed manuscripts and webpage of the Journal with interactive pdf files, and language correction of manuscripts published in Journal of Animal and Feed Sciences are financed in the years 2018–2019 by the Ministry of Science and Higher Education from the funds for science popularization activities, Agreement No. 631/P-DUN/2018.