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.: Home > Animal Science Papers and Reports > 2007 > Volume 25 Number 3 > Brygida Œlaska1, Gra؟yna Je؟ewska1, Marek £ukaszewicz2, Grzegorz Ziêba1

Genetic determination of selected reproduction traits in raccoon dog (Nyctereutes procyonoides)

Brygida Œlaska1, Gra؟yna Je؟ewska1, Marek £ukaszewicz2, Grzegorz Ziêba1
1 Department of Biological Basis for Animal Production, Faculty of Biology and Animal Breeding, Agricultural University of Lublin, Akademicka 13, 20-950 Lublin, Poland 2 Polish Academy of Sciences Institute of Genetics and Animal Breeding, Jastrz.biec, 05.552 Wolka Kosowska, Poland
Abstract :

The study aimed at analysing the reproduction merit, including its genetic variation, in raccoon
dog. Input data covered records on 837 brood females maintained on a single farm over the years
1997-1999. Animals were divided into three groups according to whether they delivered and raised
a litter (group 1), delivered and destroyed a litter (group 2) or failed to deliver a litter (group 3).
Variance components for the probabilities of assigning an animal to particular group were estimated with the REML/animal model approach. The statistical model accounted for fixed effects of years of birth and delivery of the female, her litter-of-origin size, parity, regression on age at delivery within parity, and random effects of female’s permanent environment and additive genetics. Over the years 1997-1999 as much as 72.8% of the females were assigned to group 1, 16.0% to group 2, and 11.2% to group 3. Heritability coefficients of particular probabilities were 0.37, 0.32, 0.08 and repeatabilities 0.54, 0.45, 0.13 for delivering, destroying, and failing to have a litter, respectively. Moderate heritabilities and repeatabilities of the traits studied indicate that effective improvement of the reproduction merit in the analysed raccoon dog population is feasible.

Keywords :
genetic parametres / inbreeding / raccoon dog / reproduction

Date Deposited : 08 Aug 2011 12:33

Last Modified : 08 Aug 2011 12:33

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Volume 25, Number 3, - 2007

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