Czech J. Anim. Sci., 2004, 49(11):474-482 | DOI: 10.17221/4334-CJAS

Breeding value evaluation in Polish fur animals: Estimates of direct heritability and portion of litter variation of fur coat and reproduction traits

H. Wierzbicki
Agricultural University, Wroclaw, Poland

The study presents estimates of heritability for fur coat and reproduction traits in arctic and silver foxes kept on Polish farms. The estimates of variance components were calculated using the DFREML and single-trait animal models. Due to a discrete character of fur coat traits, they were analysed twice: (1) without normalisation of their scores distribution, (2) after the normal probability scale transformation of their scores. Linear models included random additive genetic and common litter environment effects, and fixed effects of farm × year × birth season in the silver fox or year × birth season in the arctic fox as well as the fixed effect of female age when the reproduction traits were analysed. Moreover, the estimation of variance components for fur coat traits was done by a linear model with (Model 2) or without (Model 1) inbreeding coefficients included as linear covariable. In the arctic fox accounting for inbreeding and the data transformation did not markedly influence the estimates of heritability and the portion of litter variation calculated for the fur coat traits. An inbreeding effect was negligible (except for body size - BS) likely due to the low inbred level of the arctic fox population. In the silver fox the comparison of estimates derived using 2 different linear models and 2 data sets revealed more differences than it was found in the arctic fox. Accounting for inbreeding usually led to lower estimates of heritability, mainly when heritabilities were derived from the normal probability scale-transformed data. Most of the estimates of heritability of reproduction traits were found within the range reported by other authors. However, somewhat higher heritabilities were found for litter size at birth - LSB (0.205) and litter size at weaning - LSW (0.250).

Keywords: arctic fox; fur coat; heritability; normal probability scale transformation; reproduction; silver fox

Published: November 30, 2004  Show citation

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Wierzbicki H. Breeding value evaluation in Polish fur animals: Estimates of direct heritability and portion of litter variation of fur coat and reproduction traits. Czech J. Anim. Sci. 2004;49(11):474-482. doi: 10.17221/4334-CJAS.
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    References

    1. Besbes B., Ducrocq V., Foulley J-L., Protais M., Tavernier A., Tixier-Boichard M., Beaumont C. (1993): Box-Cox transformation of egg production traits of laying hens to improve genetic parameters estimation and breeding evaluation. Livest. Prod. Sci., 33, 313-326. Go to original source...
    2. Filistowicz A., Żuk B., Sławoń J. (1999a): Evaluation of factors determining prices of Polish arctic fox skins at the Helsinki International Auction. Anim. Sci. Pap. Rep., 17, 209-219.
    3. Filistowicz A., Wierzbicki H., Zwolińska-Bartczak I., Żuk B. (1999b): Genetic parameters of conformation and coat traits in fox (Vulpes vulpes) population. J. Appl. Genet., 40, 211-217.
    4. Filistowicz A., Szwaczkowski T., Żuk B., Piotrkowski P., Przysiecki P. (1999c): Model of continuous breeding value estimation and selection in the Arctic fox population (in Polish, summary in English). Appl. Sci. Rep., 42, 35-43.
    5. Filistowicz A., Przysiecki P., Wierzbicki H., Filistowicz A., Tokarska M. (2000): Genetic parameters of coat colour in golden fox (Vulpes vulpes L.). J. Appl. Genet., 41, 259-265. Go to PubMed...
    6. Gianola D. (1982): Theory and analysis of threshold characters. J. Anim. Sci., 56, 1079-1096. Go to original source...
    7. Hagger C. (2000): Genetic and environmental influences on size of first li er in sheep, estimated by the REML method. J. Anim. Breed. Genet., 117, 57-64. Go to original source...
    8. Haley C.S., Avalos E., Smith C. (1988): Selection for li er size in the pig. Anim. Breed. Abstr., 56, 317-332.
    9. Hermesch S., Luxford B.G., Graser H.U. (2000): Genetic parameters for lean meat yield, meat quality, reproduction and feed efficiency traits for Australian pigs. 3. Genetic parameters for reproduction traits and genetic correlation with production, carcase and meat quality traits. Livest. Prod. Sci., 65, 261-270. Go to original source...
    10. Jakubczak A. (2002): Evaluation of pastel fox breeding results in Poland - reproduction. Electronic Journal of Polish Agricultural Universities, Animal Husbandry, 5(2), h p://www.ejpau.media.pl.
    11. Johannessen K.R., Borsting E., Kristiansen H. (2000): Live grading as a tool in pelsdyrkontrollen. Scientifur 24, 90-97.
    12. Kaufmann D., Hofer A., Bidanel J.P., Künzi N. (2000): Genetic parameters for individual birth and weaning weight and for li er size of Large White pigs. J. Anim. Breed. Genet., 117, 121-128. Go to original source...
    13. Lagerqvist G., Johansson K., Lundeheim M. (1994): Selection for li er size, body weight and pelt quality in mink (Mustela vison). J. Anim. Sci., 72, 1126-1137. Go to original source... Go to PubMed...
    14. Matos C.A.P., Thomas D.L., Gianola D., Perez-Enciso M., Young L.D. (1997): Genetic analysis of discrete reproductive traits in sheep using linear or nonlinear models: II. Goodness of fit and predictive ability. J. Anim. Sci., 75, 88-94. Go to original source... Go to PubMed...
    15. Meyer K. (1989): Restricted Maximum Likelihood to estimate variance components for Animal Models with several random effects using a derivative-free algorithm. Genet. Sel. Evol., 21, 317-340. Go to original source...
    16. Meyer K. (1998): DFREML User Notes version 3.0 β. Animal Genetics and Breeding Unit, University of New England, Armidale, Australia.
    17. Ortega J.A., Blasco A., Piles M., Varona L. (2002): Estimation of genetic parameters and genetic trends for li er size components using Bayesian inference in rabbits. In: 7th World Congress on Genetics Applied to Livestock Production, August 19-23, Montpellier, France.
    18. Pa erson H.D., Thompson R. (1971): Recovery of interblock information when block sizes are unequal. Biometrika, 58, 545-554. Go to original source...
    19. Peura J., Stranden I., Smeds K. (2003): Genetic parameters for fertility traits and animal size of blue fox (Alopex lagopus). In: NJF seminar No. 354, NJF's subsection for Fur Animals. Oct. 8-10, 2003, Lillehammer, Norway.
    20. Socha S. (1996): Trends and efficiency of polar blue fox (Alopex lagopus L.) selection. In: Proceedings of 6th International Scientific Congress on Animal Production, Warsaw, Poland, Appl. Sci. Rep., 27, 213-217.
    21. Sundberg R. (1994): Precision estimation in sample survey inference: A criterion for choice between variance estimators. Biometrika, 81, 157-172. Go to original source...
    22. Ślaska B. (2002): Genetic and environmental factors of raccoon dog reproduction traits. Electronic Journal of Polish Agricultural Universities, Animal Husbandry, 5(2), h p://www.ejpau.media.pl.
    23. Wierzbicki H. (2000): Additive genetic and error variance components for conformation and coat traits in arctic fox Alopex lagopus (L.). Scientifur, 24, 217-222.
    24. Wierzbicki H., Filistowicz A. (2002): Single- and multitrait animal model in the silver fox evaluation. Czech J. Anim. Sci., 47, 268-274.
    25. Wierzbicki H., Filistowicz A. (2003): Grading standards and their effect on estimates of variance components and genetic trends in the silver fox (Vulpes vulpes L.). J. Anim. Feed Sci., 12, 189-197. Go to original source...
    26. Wierzbicki H., Filistowicz A., Przysiecki P. (2000): Genetic, phenotypic and environmental trends of conformation traits in arctic fox (Alopex lagopus L.). J. Appl. Genet., 41, 113-122.
    27. Wierzbicki H., Filistowicz A., Jagusiak W. (2004): Breeding value evaluation in Polish fur animals: Statistical description of fur coat and reproduction traits - relationship and inbreeding. Czech J. Anim. Sci., 49, 16-27. Go to original source...

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