Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Effect of mixing with non-familiar piglet on change of body temperature

이복자돈과의 체중별 합사가 자돈의 체온변화에 미치는 영향

  • Kim, Kwang-Sik (National Institute of Animal Science, Rural Development Adminstration) ;
  • Cho, Eun-Seok (National Institute of Animal Science, Rural Development Adminstration) ;
  • Kim, Young-Hwa (National Institute of Animal Science, Rural Development Adminstration) ;
  • Kim, Jo-Eun (National Institute of Animal Science, Rural Development Adminstration) ;
  • Seol, Kuk-Hwan (National Institute of Animal Science, Rural Development Adminstration) ;
  • Kim, Ki-Hyun (National Institute of Animal Science, Rural Development Adminstration)
  • 김광식 (농촌진흥청 국립축산과학원) ;
  • 조은석 (농촌진흥청 국립축산과학원) ;
  • 김영화 (농촌진흥청 국립축산과학원) ;
  • 김조은 (농촌진흥청 국립축산과학원) ;
  • 설국환 (농촌진흥청 국립축산과학원) ;
  • 김기현 (농촌진흥청 국립축산과학원)
  • Received : 2015.07.10
  • Accepted : 2015.08.20
  • Published : 2015.09.30
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Abstract

This study was performed to investigate the change of the body surface temperature during socialization of weaning pigs. A total of 108 piglets (Landrace 60 and Yorkshire 48) aged 31 (${\pm}1.1$) day was used for this study. Experiment was designed as follows; familiar group (T1), randomly mixed with unfamiliar piglets (T2), mixed based on weight of unfamiliar piglet (T3). The transport and mixing of pigs were performed at 10:00, and then body surface temperature was taken by thermo-graphic camera after 4 hours (14:00). Average surface temperature and hot-spot-temperature, which is the hottest spot of the body surface, were analyzed using Testo IRsoft 3.1 software. Average temperature of body surface were 36.0, 38.2, and 37.5 in T1, T2, and T3, respectively. Average of body surface temperature in T2 and T3 were higher (p<0.001) than T1, and average temperature of body surface of T3 was greater (p<0.001) than that of T2. The hot-spot-temperature of T1, T2, and T3 were 38.7, 39.5, and 39.6, respectively. The hot-spot-temperature of T2 (p<0.01) and T3 (p<0.001) were significantly higher than that of T1. Above results demonstrate that grouping unfamiliar pigs leads to increase in the body temperature possibly by pigs aggressive behavior during social conflict. By the result on average body temperature, this study suggests that the mixing with similar body weight would increase the struggle time and frequency.

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References

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