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Forskningsartikel2015Vetenskapligt granskad

Genetic correlation between leg conformation in young pigs, sow reproduction and longevity in Danish pig populations

Hong, Thu Le; Norberg, E.; Nielsen, B.; Madsen, P.; Nilsson, Katja; Lundeheim, Nils

Sammanfattning

Selection for sow longevity using information from traits, which are expressed in early life and genetically highly related to longevity, is expected to be more effective than direct selection as it can overcome the disadvantage of late recording of true longevity. Our aim was to investigate the correlation between leg conformation recorded on young pigs, litter size at first parity and longevity of Danish Landrace and Yorkshire sows. Information on conformation from 116,733 Landrace and 89,963 Yorkshire pigs and information on reproduction and longevity from 27,070 Landrace and 11,895 Yorkshire sows were analyzed. All considered traits were low to moderately heritable, ranging from 0.02 to 0.41. In general, both conformation and reproduction traits were favorably genetically correlated with longevity (0.07-0.39 and 0.00-0.58, respectively). These estimates suggest a potential of improving sow longevity by selection on conformation recorded at young age and litter size at first parity.

Nyckelord

stayability; gait; swine; survival; Association

Publicerad i

Acta Agriculturae Scandinavica, Section A - Animal Science
2015, Volym: 65, nummer: 3-4, sidor: 132-138 Utgivare: Taylor & Francis: STM, Behavioural Science and Public Health Titles