Characteristics of Pig Carcass and Primal Cuts Measured by the Autofom III Depend on Seasonal Classification

Jungseok Choi, Kimun Kwon, Youngkyu Lee, Eunyoung Ko, Yongsun Kim, Yangil Choi*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


The objective of this study was to investigate slaughtering performance, carcass grade, and quantitative traits of cuts according to seasonal influence by each month in pigs slaughtered in livestock processing complex (LPC) slaughterhouse in Korea, 2017. A total of 267,990 LYD (LandracexYorkshirexDuroc) pig data were used in this study. Results of slaughter heads, sex distribution, carcass weight, backfat thickness, grading class, total weight, and fat and lean meat percentages of each cut predicted by AutoFom. were obtained each month. The number of slaughtered pigs was the highest in early and late fall but the lowest in midsummer. Only in midsummer that the number of females was higher than that of castrates. During 2017, carcass weight was the lowest in late summer. Backfat thickness was in the range of 21-22 mm. In mid and late spring, pigs showed high 1+ grade ratio (37.05% and 36.15%, respectively). For traits of 11 cuts predicted by AutoFom III, porkbelly showed lower total weight, lean weight, and fat weight in midsummer to early fall but higher lean meat percentage compared to other seasons. Weights of deboned neck, loin, and lean meat were the highest in midfall compared to other seasons (p<0.05). In conclusion, characteristics of slaughtering, grading, and economic traits of pigs seemed to be highly seasonal. They were influenced by seasons. Results of this study could be used as basic data to develop seasonal specified management ways to improve pork production.

Original languageEnglish
Pages (from-to)332-344
Number of pages13
JournalFood science of animal resources
Issue number2
Publication statusPublished - 2019


  • season
  • LYD pigs
  • slaughter head
  • AutoFom III
  • yield
  • economic traits
  • GENE

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