Abstract

Direct selection for improved longevity might be ineffective due to late in life information on this trait. This study aims at studying genetic correlations between leg conformation traits scored in young Yorkshire pigs in nucleus herds and longevity traits of purebred Yorkshire sows in multiplier herds. Two datasets were available: 1) on 97,533 animals (both sexes) with information on movement and overall leg score recorded at performance testing and, 2) on 12,444 sows with information on longevity. The longevity traits were: stayability to survive up to second or third parity (STAY12/STAY13); length of productive life (LPL); number of litters (NoL); lifetime born alive (LBA) and lifetime total born (LTB). The estimated heritabilities ranged from 0.05 to 0.16. Almost all estimated genetic correlations between conformation and longevity traits were significantly favorable (better scores - better longevity). Movement showed higher correlations with longevity (0.36-0.53) compared with overall leg score (0.24- 0.33).

Published in

Title: Proceedings, 10th World Congress of Genetics Applied to Livestock Production
Publisher: WCGALP

Conference

10th World Congress on Genetics Applied to Livestock Production

SLU Authors

• Hong, Thu Le

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    
  • Aarhus University

• Nilsson, Katja

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

• Lundeheim, Nils

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Genetics and Breeding


Permanent link to this page (URI)

https://res.slu.se/id/publ/63878