Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Effect of Different Cooling System on Performance and Hair Cortisol on Sows under Heat Stress

고온기 분만사 내 냉방 시설의 종류가 모돈의 번식성적 및 스트레스 지표에 미치는 영향

  • Oh, Seung-Min (Gyeongsangbuk-do Livestock Research Institue) ;
  • Choi, Yo-Han (Swine Science Division, National Institute of Animal Science, Rural Development Administration) ;
  • Kim, Dong-Woo (Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University) ;
  • Ha, Sang-Hun (Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University) ;
  • Kim, Jo-Eun (Swine Science Division, National Institute of Animal Science, Rural Development Administration) ;
  • Jung, Hyun-Jung (Swine Science Division, National Institute of Animal Science, Rural Development Administration) ;
  • Kim, Jin-Soo (Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University)
  • 오승민 (경상북도 축산기술연구소) ;
  • 최요한 (농진청 국립축산과학원 양돈과) ;
  • 김동우 (강원대학교 동물생명과학대학 동물산업융합학과) ;
  • 하상훈 (강원대학교 동물생명과학대학 동물산업융합학과) ;
  • 김조은 (농진청 국립축산과학원 양돈과) ;
  • 정현정 (농진청 국립축산과학원 양돈과) ;
  • 김진수 (강원대학교 동물생명과학대학 동물산업융합학과)
  • Received : 2020.12.17
  • Accepted : 2021.03.05
  • Published : 2021.03.31
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Abstract

This study was undertaken to determine the effect of different cooling systems on the performance and hair cortisol of sows under heat stress. During a 21-day experiment, a total of 40 multiparous sows (Landrace×Yorkshire; 242.84±2.89 kg) were allotted to 4 treatments, each with 10 replicates (1 sow per pen). The experimental treatments were CP (Cooling pad), AC (Air conditioner), SC (Snout cooling), and MS (Mist spray). We observed an increase in the average daily feed intake during lactation (p<0.05) in the CP and AC treatment groups. AC treatment had the highest (p<0.05) and SC treatment had the lowest (p<0.05) piglet weight at weaning. During lactation, sows administered SC and MS treatments had higher (p<0.05) hair cortisol accumulation, as compared with the AC and CP treatments. Hair cortisol accumulation in piglets during lactation was highest with MS treatment (p<0.05), and lowest after CP treatment (p<0.05). MS treatment had the highest (p<0.05), and AC treatment had the lowest (p<0.05) respiratory rate and rectal temperature during lactation. In conclusion, our results indicate that a cooling pad and air conditioning cooling system increases the productivity of a sow, as compared to snout cooling and mist spray cooling systems.

본 연구는 고온기 분만사 내 냉방 시설의 종류가 모돈의 번식성적 및 스트레스 지표에 미치는 영향을 구명하기 위하여 실시되었다. 본 실험을 위해 경산돈(Landrace×Yorkshire; 242.84±2.89 kg) 40두를 공시하였으며, 냉방 시설에 기반하여 4처리 10반복, 반복당 1두씩 완전임의 배치하였다. 실험 처리구는 쿨링패드(CP; Cooling pad), 에어컨(AC, Air conditioner), 스나웃 쿨링(SC, Snout cooling) 및 안개분무(MS, Mist spray)로 구성되었으며, 포유기간(21일) 동안 진행되었다. 모돈의 성적에서 일일사료섭취량은 포유기간에서 CP 및 AC 처리구가 유의적으로 높게 나타났다(p<0.05). 이유 시, 자돈의 체중은 AC처리구가 유의적으로 가장 높게 나타났으며(p<0.05), SC처리구가 유의적으로 가장 낮게 나타났다(p<0.05). 모돈의 코티졸 농도는 SC 및 MS처리구가 CP 및 AC처리구보다 유의적으로 높게 나타났다(p<0.05). 자돈의 코티졸 농도는 MS처리구가 유의적으로 가장 높게 나타났으며(p<0.05), CP처리구가 유의적으로 가장 낮게 나타났다(p<0.05). 모돈의 호흡수 및 직장온도는 MS처리구가 유의적으로 가장 높게 나타났으며(p<0.05), AC처리구가 유의적으로 가장 낮게 나타났다(p<0.05). 결론적으로, 쿨링패드 및 에어컨 냉방시설이 스나웃 쿨링 및 안개분무 냉방시설보다 모돈의 생산성을 개선시킬 수 있을 것으로 사료된다.

Keywords

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