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Quantifiable and feasible estrus detection using the ultrasonic sensor array and digital infrared thermography

  • Lee, Ji Hwan (Division of Food and Animal Science, Chungbuk National University) ;
  • Lee, Dong Hoon (Department of Biosystems Engineering, Chungbuk National University) ;
  • Yun, Won (Division of Food and Animal Science, Chungbuk National University) ;
  • Oh, Han Jin (Division of Food and Animal Science, Chungbuk National University) ;
  • An, Ji Seon (Division of Food and Animal Science, Chungbuk National University) ;
  • Kim, Young Gwang (Division of Food and Animal Science, Chungbuk National University) ;
  • Kim, Gok Mi (Department of Beauty Art, Yonam College) ;
  • Cho, Jin Ho (Division of Food and Animal Science, Chungbuk National University)
  • Received : 2019.04.15
  • Accepted : 2019.04.25
  • Published : 2019.05.31

Abstract

Detection of estrus is an essential factor as a method of successful breeding in the sow. As increasing the adaption of the information and communication technology (ICT) into swine industry, this study focuses on a possibility and quantification of standing time, vulva and body temperature as methods of estrus detection, comparing each time and temperature in estrus and non-estrus period, and analyzing each success rate of new and existing methods. Ultrasonic sensor array and digital infrared thermography were used to evaluate whether new methods such as standing time and number, and vulva and skin temperature can be replaced, or these methods can be quantifiable in estrus period. Ultrasonic sensor array was installed beside the stall and digital infrared thermography was placed in the rear of sow to collect the dates of sow in estrus and non-estrus period. This study showed total standing time, number and number over 10 minutes, and vulva temperature of the sow in estrus period were increased (p < 0.05) compared with those of sow in non-estrus period, respectively. Detection of estrus using standing time and vulva temperature tended (p = 0.06) to increase the success rate when artificial insemination (AI) was performed. In conclusion, standing time and vulva temperature increased when estrus happened. Success rate of AI of sow using these methods showed an increasing trend. Therefore, existing method using the naked eye can be replaced to new method such as vulvar temperature and standing time when detecting the estrus.

Keywords

Ultrasonic sensor array;Digital infrared thermography;Standing time;Vulvar temperature;Estrus

Acknowledgement

Supported by : Rural Development Administration

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