Genetic divergence study among Duroc, Landrace and Large White swine breeds using techniques of multivariate analysis

  • A. Vieira Pires Universidade Federal de Viçosa, Minas Gerais, Brasil
  • R. da Fonseca Universidade Federal de Viçosa, Minas Gerais, Brasil
  • J. Araujo Cobuci Universidade Federal de Viçosa, Minas Gerais, Brasil
  • C. Vieira Araujo Universidade Federal de Viçosa, Minas Gerais, Brasil
  • A. Correa da Costa Universidade Federal de Viçosa, Minas Gerais, Brasil
  • P. Savio Lopes Universidade Federal de Viçosa, Minas Gerais, Brasil
  • Robledo de Almeida Torres Universidade Federal de Viçosa, Minas Gerais, Brasil
  • Ricardo Frederico Euclydes Universidade Federal de Viçosa, Minas Gerais, Brasil

Abstract

Multivariate techniques were used to evaluate the genetic divergence among three swine breeds. Six performance traits were evaluated: piglet weight at birth (PON), at 21 days (P21), at 70 days (P70), average daily weight gain (GDP), age to obtain 100 kg (ID100) and backfat thickness (ETO). Breed performance was evaluated by multivariate analysis of variance and Fisher’s linear discriminant function, using tests of Roy’s greatest root and Roy’s union-intersection to multiple comparison. The study of genetic divergence was made by canonical variables analysis. The Large White breed was somewhat superior in relation to Landrace, and both were better than Duroc. Great genetic divergence was observed between Landrace and Large White breeds and Duroc breed, while the former two presented more similarity. These results justify utilization of the Landrace and Large White breeds to produce F1 females for crossing with Duroc males to obtain hybrid offspring expressing heterosis and in which there is complementation amog traits.

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Published
2005-02-23
How to Cite
Pires, A. Vieira, R. da Fonseca, J. Araujo Cobuci, C. Vieira Araujo, A. Correa da Costa, P. Savio Lopes, Robledo de Almeida Torres, and Ricardo Frederico Euclydes. 2005. “Genetic Divergence Study Among Duroc, Landrace and Large White Swine Breeds Using Techniques of Multivariate Analysis”. Latin American Archives of Animal Production 10 (2). https://ojs.alpa.uy/index.php/ojs_files/article/view/182.
Section
Original paper