Searching threshold temperature for farrowing performance traits of pigs in Japan using public meteorological data

DOI Web Site Web Site 16 References
  • OGAWA Shinichiro
    Division of Meat Animal and Poultry Research, Institute of Livestock and Grassland Science, NARO
  • OKAMURA Toshihiro
    Division of Meat Animal and Poultry Research, Institute of Livestock and Grassland Science, NARO
  • FUKUZAWA Yo
    Division of Meat Animal and Poultry Research, Institute of Livestock and Grassland Science, NARO Graduate School of Agricultural Science, Tohoku University
  • NISHIO Motohide
    Division of Meat Animal and Poultry Research, Institute of Livestock and Grassland Science, NARO
  • ISHII Kazuo
    Division of Meat Animal and Poultry Research, Institute of Livestock and Grassland Science, NARO
  • KIMATA Makoto
    CIMCO Corporation
  • TOMIYAMA Masamitsu
    CIMCO Corporation
  • SATOH Masahiro
    Graduate School of Agricultural Science, Tohoku University

Bibliographic Information

Other Title
  • 気象庁気温データを用いたブタ分娩成績形質に関する暑熱負荷閾値の探索
  • キショウチョウ キオン データ オ モチイタ ブタ ブンベン セイセキ ケイシツ ニ カンスル ショネツフカ イキチ ノ タンサク

Search this article

Abstract

<p>For robust modelling of heat load, a plateau-linear regression analysis was performed using 52,668 farrowing records from 10,320 purebred Landrace female pigs reared in six farms in Japan obtained during 2007 and 2022 and public weather data. Daily maximum temperature data observed at Japan Meteorological Agency meteorological stations nearest from the farms were downloaded. Traits studied were total number born (TNB), number born alive (NBA), number stillborn (NSB), total piglet weight at birth (LWB), mean piglet weight at birth (MWB), and piglet survival rate at birth (SVB). Coefficient of determination of the plateau-linear regression model was obtained with varying the breakpoint value was changed from 10.0°C to 25.0°C at 0.1°C intervals, and the value showing the greatest model fitting was reported as the threshold temperature. Daily maximum temperature data at mating day was used for TNB, NBA, and LWB; those at farrowing day was used for NSB, MWB, and SVB. The threshold temperature detected was 17.7°C for TNB, 16.6°C for NBA, 22.9°C for NSB, 17.1°C for LWB, 10.0°C for MWB, and 22.9°C for SVB, and the estimated regression coefficient was negative for TNB, NBA, LWB, and SVB and positive for NSB and MWB. The analysis seemed not to perform well for MWB in this study. The results could give the fundamental information on developing the statistical model for national breeding value evaluation for pigs to cope with global warming.</p>

Journal

References(16)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top