Genetic parameters in a Swine Population

Authors

  • Dana Popa University of Agricultural Sciences and Veterinary Medicine of Bucharest, Faculty of Animal Science, 011463-Bucharest, Marasti Boulevard, 52, Romania
  • Razvan Popa University of Agricultural Sciences and Veterinary Medicine of Bucharest, Faculty of Animal Science, 011463-Bucharest, Marasti Boulevard, 52, Romania
  • Cristina Diaconescu University of Agricultural Sciences and Veterinary Medicine of Bucharest, Faculty of Animal Science, 011463-Bucharest, Marasti Boulevard, 52, Romania
  • Carmen Nicolae University of Agricultural Sciences and Veterinary Medicine of Bucharest, Faculty of Animal Science, 011463-Bucharest, Marasti Boulevard, 52, Romania
  • Livia Vidu University of Agricultural Sciences and Veterinary Medicine of Bucharest, Faculty of Animal Science, 011463-Bucharest, Marasti Boulevard, 52, Romania
  • Marius Maftei University of Agricultural Sciences and Veterinary Medicine of Bucharest, Faculty of Animal Science, 011463-Bucharest, Marasti Boulevard, 52, Romania
  • Nicoleta Isfan University of Agricultural Sciences and Veterinary Medicine of Bucharest, Faculty of Animal Science, 011463-Bucharest, Marasti Boulevard, 52, Romania

Keywords:

animal breeding, genetic correlations, heritability

Abstract

The estimation of the variance-covariance components is a very important step in animal breeding because these components are necessary for: estimation of the genetic parameters, prediction of the breeding value and design of animal breeding programs.
The estimation of genetic parameters is the first step in the development of a swine breeding program, using artificial insemination.
Various procedures exist for estimation of heritability. There are three major procedures used for estimating heritability: analysis of variance (ANOVA), parents-offspring regression and restricted maximum likelihood (REML). By using ANOVA methodology or regression method it is possible to obtain aberrant values of genetic parameters (negative or over unit value of heritability coefficient, for example) which can not be interpreting because is out of biological limits.
genetic parameters is the first step in the development of a sThe estimation of the variance-covariance components is a very important step in animal breeding because these components are necessary for: estimation of the genetic parameters, prediction of the breeding value and design of animal breeding programs.
The estimation of genetic parameters is the first step in the development of a swine breeding program, using artificial insemination.
Various procedures exist for estimation of heritability. There are three major procedures used for estimating heritability: analysis of variance (ANOVA), parents-offspring regression and restricted maximum likelihood (REML). By using ANOVA methodology or regression method it is possible to obtain aberrant values of genetic parameters (negative or over unit value of heritability coefficient, for example) which can not be interpreting because is out of biological limits.
ical limits.

References

Patterson, H. D., Thompson, R., Recovery of inter-block information when block sizes are unequal, Biometrika, 1971, 58, 545-554.

Grosu et al, Modele liniare utilizate in ameliorarea genetica a animalelor, Ed. Coral Sanivet, Bucuresti, 1997.

Grosu et al, Programe de ameliorare genetica in zootehnie, Ed. Ceres, Bucuresti, 2005.

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Published

2023-10-03

Issue

Vol. 43 No. 1 (2010): Scientific Papers: Animal Science and Biotechnologies

Section

Animal Reproduction

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.