Factor analysis for genetic evaluation of linear type traits in dual-purpose autochthonous breeds.

  title={Factor analysis for genetic evaluation of linear type traits in dual-purpose autochthonous breeds.},
  author={Serena Mazza and N Guzzo and Cristina Sartori and Roberto Mantovani},
  journal={Animal : an international journal of animal bioscience},
  volume={10 3},
Factor analysis was applied to individual type traits (TT) scored in primiparous cows belonging to two dual purpose Italian breeds, Rendena (REN; 20 individual type traits evaluated on 11 399 first parity cows), and Aosta Red Pied (ARP; 22 individual type traits evaluated on 36 168 primiparous cows). Six common latent factors (F1 to F6; eigenvalues ⩾1) which explained 63% (REN) and 58% (ARP) of the total variance were obtained. F1 included TT mainly related to muscularity, and F2 to body size… 

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