Genetic analysis of teat number and litter traits in pigs

Sammanfattning

The aim of this study was to analyse, on data on purebred Yorkshire pigs in Swedish nucleus herds, the genetic correlation between teat number (both functional and non-functional) recorded at performance testing (at approx. 100 kg live weight), litter size at birth and litter weight at 3 weeks of age. Animal mixed-model analysis was applied on the data available (57,000 performance tested pigs, 10,000 1st-parity litters and 6500 2nd-parity litters). The estimated heritability for number of functional teats was 0.31, for number of non-functional teats 0.09 and for total number of teats 0.39. Number of non-functional teats was negatively genetically correlated with number of functional teats (r(G) = -0.34), and positively correlated with litter size (parity 1; +0.20) and number of stillborn piglets (parity 2; +0.34).

Nyckelord

Genetic correlations; teat quality; sow

Publicerad i

Acta Agriculturae Scandinavica, Section A - Animal Science
2013, volym: 63, nummer: 3, sidor: 121-125
Utgivare: TAYLOR & FRANCIS AS

SLU författare

• Lundeheim, Nils

  • Institutionen för husdjurens biovetenskaper, Sveriges lantbruksuniversitet
    

• Chalkias, Helena

  • Institutionen för husdjurens biovetenskaper, Sveriges lantbruksuniversitet
    

• Rydhmer, Lotta

  • Institutionen för husdjurens biovetenskaper, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Genetik och förädling inom lantbruksvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1080/09064702.2013.841749

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/53705