Estimation of genetic parameters for farrowing traits in purebred Landrace and Large White pigs

Shinichiro Ogawa, Ayane Konta, Makoto Kimata, Kazuo Ishii, Yoshinobu Uemoto, Masahiro Satoh

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11 Citations (Scopus)


Genetic parameters were estimated for six reproductive traits related to farrowing events in Landrace and Large White pigs; total number born (TNB), number born alive (NBA), number stillborn (NSB), total litter weight at birth (LWB), mean litter weight at birth (MWB), and gestation length (GL). We analyzed 62,534 farrowing records for 10,637 Landrace dams and 49,817 farrowing records for 8,649 Large White dams. Estimated heritabilities of TNB, NBA, NSB, LWB, MWB, and GL by single-trait repeatability model analyses were 0.12, 0.12, 0.08, 0.18, 0.19, and 0.29, respectively, in Landrace, and 0.12, 0.10, 0.08, 0.18, 0.16, and 0.34, respectively, in Large White. Genetic correlation between NBA and NSB was unfavorable: 0.20 in Landrace and 0.33 in Large White. Genetic correlations of GL with the other five traits were weak: from −0.18 with NSB to −0.03 with NBA in Landrace, and from −0.22 with NSB to −0.07 with NBA in Large White. LWB had a highly favorable genetic correlation with NBA (0.74 in both breeds), indicating the possibility of using LWB for the genetic improvement of NBA.

Original languageEnglish
Pages (from-to)23-28
Number of pages6
JournalAnimal Science Journal
Issue number1
Publication statusPublished - 2019 Jan


  • farrowing traits
  • female pigs
  • genetic parameter
  • number born alive
  • repeatability model

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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