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반복적인 고온환경이 사전고온 적응한 육계의 생산성에 미치는 영향

Effects of Repeated High Ambient Temperature on Performance in Broilers Heat-Conditioned at an Early Age

  • Hwangbo, Jong (Division of Poultry Science, National Institute of Animal Science, RDA) ;
  • Yang, Young-Rok (Dept. of Animal Science, Gyeongsang National University) ;
  • Yoon, HyungSook (Dept. of Animal Science, Gyeongsang National University) ;
  • Kim, Jimin (Dept. of Animal Science, Gyeongsang National University) ;
  • Park, Byungsung (Dept. of Animal Biotechnology, Kangwon National University) ;
  • Choi, Hee Chul (Division of Poultry Science, National Institute of Animal Science, RDA) ;
  • Choi, Yang-Ho (Dept. of Animal Science, Gyeongsang National University)
  • 투고 : 2015.09.04
  • 심사 : 2015.09.22
  • 발행 : 2015.09.30

초록

생후 초기에 고온을 경험하게 되면 이후 고온환경에 대하여 저항성을 획득하는 것으로 알려져 있다. 본 연구에서는 5일령의 병아리에게 단시간 고온을 경험하게 한 다음, 29일령에 1차 고온환경을 경험한 육계에서 반복된 고온환경이 생산성에 미치는 영향을 조사하였다. 아버에이커 초생추를 크기가 동일한 두 개의 사육실에 수용하였으며, 사료와 물은 자유채식토록 하였다. 조명 환경 조건은 점등 23시간, 소등 1시간이었다. 사전 고온 적응구는 5일령에 $37^{\circ}C$의 고온에 24시간 동안 노출시킨 후 정상 온도로 돌려졌고, 대조구의 감온 일정은 정상적으로 진행되었다. 21일령에 육계를 기존에 수용된 사육실에서 반을 다른 사육실로 옮겨, 한 사육실 내 대조군와 열 적응구가 각각 4개의 Pen에 배치되게 하였다. 1) 사전고온 적응 및 고온환경 양자 모두를 경험하지 않은 육계집단(CON+CON), 2) 사전고온 적응을 경험했지만 고온환경을 경험하지 않은 육계집단(HC+CON), 3) 사전고온 적응 없이 고온환경만 경험한 육계집단(CON+HS), 4) 사전고온 적응 및 고온환경 모두를 경험한 육계집단(HC+HS) 을 가지는 이원배치법(HC vs. HS) 으로 실험을 수행하였다. 29일령부터 3일 동안 고온환경에 노출된 육계들은 43일령부터 재차 고온환경을 경험하였다. 고온환경 처리구에서 사육실 온도를 $32^{\circ}C$($2^{\circ}C$/1 h)까지 올려 3일 동안 유지하였으며, 대조구는 $22^{\circ}C$로 유지되었다. 고온환경은 사료 섭취량, 음수량 및 체중을 현저하게 감소시켰으며, 직장 온도와 폐사율 및 corticosterone의 농도를 증가시켰고, 혈액 생화학 성분을 변화시켰다. 그러나 사전열적응한 육계에서는 비장의 상대무게가 유의적으로 높았다. 따라서 연구결과를 종합적으로 고려해볼 때, 사전고온 적응은 반복적으로 고온환경을 경험하는 육계에게 고온에 대한 저항성을 부여하지 않았다는 것을 의미한다.

Heat conditioning at an early age has been known to help chickens cope with heat stress later in life. The present study was conducted to determine the effects of heat conditioning at 5 days of age in broilers repeatedly exposed to high ambient temperature later in life. A total of 256 day-old Arbor Acre boiler chicks were housed in two identical rooms with a 23-h light/1-h dark cycle and provided with feed and water ad libitum. At 5 days of age, the birds in one room were exposed to $37^{\circ}C$ for 24 hours, while those in the other room served as controls. On day 21, half of the birds in each room were moved into the other room so that each room contained both control and heat-conditioned birds. After a 7-day adaptation period, the birds in one room were exposed to high ambient temperature ($21^{\circ}C{\rightarrow}31^{\circ}C$) for 3 days, whereas those in the other room were kept at normal temperature. The same 3-day exposure to high ambient temperature was repeated two weeks later. Hence, there were four treatment groups (CON+CON: control+control; CON+HS: control+high ambient temperature; HC+CON: heat conditioning+control; and HC+HS: heat conditioning+high ambient temperature). Repeated heat stress resulted in decreased feed intake, water intake, body weight gain, and spleen weight (p<0.05) and increased rectal temperature (p<0.05), mortality, and plasma corticosterone concentrations. The relative weight of the spleen was increased in the heat-conditioned group (p<0.05). Plasma biochemicals were also influenced by high temperature. Thus, no beneficial effects of heat conditioning at an early age were detected in broilers repeatedly exposed to high ambient temperature later in life.

키워드

참고문헌

  1. Aksit M, Yalcin S, Ozkan S, Metin K, Ozdemir D 2006 Effects of temperature during rearing and crating on stress parameters and meat quality of broilers. Poult Sci. 85:1867-1874. https://doi.org/10.1093/ps/85.11.1867
  2. Altan O, Pabuccuoglu A, Altan A, Konyalioglu S, Bayraktar H 2003 Effect of heat stress on oxidative stress, lipid peroxidation and some stress parameters in broilers. Br Poult Sci. 44:545-550. https://doi.org/10.1080/00071660310001618334
  3. Arjona AA, Denbow DM, Weaver WD Jr 1988 Effect of heat stress early in life on mortality of broilers exposed to high environmental temperatures just prior to marketing. Poult Sci. 67:226-231. https://doi.org/10.3382/ps.0670226
  4. Arjona AA, Denbow DM, Weaver WD Jr 1990 Neonatallyinduced thermotolerance: Physiological responses. Comp Biochem Physiol A Comp Physiol. 95:393-399. https://doi.org/10.1016/0300-9629(90)90238-N
  5. Borges SA, Fischer da Silva AV, Majorka A, Hooge DM, Cummings KR 2004 Physiological responses of broiler chickens to heat stress and dietary electrolyte balance (sodium plus potassium minus chloride, milliequivalents per kilogram). Poult Sci. 83:1551-1558. https://doi.org/10.1093/ps/83.9.1551
  6. Collin A, Berri C, Tesseraud S, Rodon FE, Skiba-Cassy S, Crochet S, Duclos MJ, Rideau N, Tona K, Buyse J, Bruggeman V, Decuypere E, Picard M, Yahav S 2007 Effects of thermal manipulation during early and late embryogenesis on thermotolerance and breast muscle characteristics in broiler chickens. Poult Sci. 86:795-800. https://doi.org/10.1093/ps/86.5.795
  7. Deger Oral Toplu H, Tunca R, Unubol Aypak S, Coven F, Tugrul Epikmen E, Karaarslan S, Yagin O 2014 Effects of heat conditioning and dietary ascorbic acid supplementation on heat shock protein 70 expression, blood parameters and fear-related behavior in broilers subjected to heat stress. Acta Scientiae Veterinariae. 42(1):1-8.
  8. De Basilio V, Vilarino M, Yahav S, Picard M 2001 Early age thermal conditioning and a dual feeding program for male broilers challenged by heat stress. Poult Sci. 80:29-36. https://doi.org/10.1093/ps/80.1.29
  9. El-Moniary M, Hemid A, El-Wardany I, Gehad A, Gouda A 2010 The effect of early age heat conditioning and some feeding programs for heat-stressed broiler chicks on: 1-productive performance. World J Agr Sci. 6:689-695.
  10. Geraert PA, Padilha JC, Guillaumin S 1996 Metabolic and endocrine changes induced by chronic heat exposure in broiler chickens: Growth performance, body composition and energy retention. Br J Nutr. 75:195-204.
  11. Giloh M, Shinder D, Yahav S 2012 Skin surface temperature of broiler chickens is correlated to body core temperature and is indicative of their thermoregulatory status. Poult Sci. 91:175-188. https://doi.org/10.3382/ps.2011-01497
  12. Kadono H, Besch EL 1978 Telemetry measured body temperature of domestic fowl at various ambient temperatures. Poult Sci. 57:1075-1080. https://doi.org/10.3382/ps.0571075
  13. Lin H, Jiao HC, Buyse J, Decuypere E 2006 Strategies for preventing heat stress in poultry. World's Poultry Science Journal. 62:71-86. https://doi.org/10.1079/WPS200585
  14. May JD 1995 Ability of broilers to resist heat following neonatal exposure to high environmental temperature. Poult Sci. 74:1905-1907. https://doi.org/10.3382/ps.0741905
  15. Ministry of Public Safety and Security. Daily briefing on public safety management released on August 19, 2015. http://www.safekorea.go.kr/dmtd/contents/room/stat/DaySityReptDetail.jsp?q_menuid=M_NST_SVC_01_02_01&rept_seq=463749&q_string=&q_strdate=&q_enddate=&pageNo=3(Accessed August 20, 2015).
  16. Niu ZY, Liu FZ, Yan QL, Li WC 2009 Effects of different levels of vitamin E on growth performance and immune responses of broilers under heat stress. Poult Sci. 88:2101-2107. https://doi.org/10.3382/ps.2009-00220
  17. Northcutt JK, Foegeding EA, Edens FW 1994 Water-holding properties of thermally preconditioned chicken breast and leg meat. Poult Sci. 73:308-316. https://doi.org/10.3382/ps.0730308
  18. Prieto MT, Campo JL 2010 Effect of heat and several additives related to stress levels on fluctuating asymmetry, heterophil: Lymphocyte ratio, and tonic immobility duration in white leghorn chicks. Poult Sci. 89:2071-2077. https://doi.org/10.3382/ps.2010-00716
  19. Quinteiro-Filho WM, Ribeiro A, Ferraz-de-Paula V, Pinheiro ML, Sakai M, Sa LR, Ferreira AJ, Palermo-Neto J 2010 Heat stress impairs performance parameters, induces intestinal injury, and decreases macrophage activity in broiler chickens. Poult Sci. 89:1905-1914. https://doi.org/10.3382/ps.2010-00812
  20. Reece FN, Deaton JW, Kubena LF 1972 Effects of high temperature and humidity on heat prostration of broiler chickens. Poult Sci. 51:2021-2025. https://doi.org/10.3382/ps.0512021
  21. Richards SA 1970 The biology and comparative physiology of thermal panting. Biol Rev Camb Philos Soc. 45:223-264. https://doi.org/10.1111/j.1469-185X.1970.tb01631.x
  22. Star L, Juul-Madsen HR, Decuypere E, Nieuwland MG, de Vries Reilingh G, van den Brand H, Kemp B, Parmentier HK 2009 Effect of early life thermal conditioning and immune challenge on thermotolerance and humoral immune competence in adult laying hens. Poult Sci. 88:2253-2261. https://doi.org/10.3382/ps.2008-00373
  23. Yahav S, Goldfeld S, Plavnik I, Hurwitz S 1995 Physiological responses of chickens and turkeys to relative humidity during exposure to high ambient temperature. Journal of Thermal Biology. 20:245-253. https://doi.org/10.1016/0306-4565(94)00046-L
  24. Yahav S, Hurwitz S 1996 Induction of thermotolerance in male broiler chickens by temperature conditioning at an early age. Poult Sci. 75:402-406. https://doi.org/10.3382/ps.0750402
  25. Yahav S, McMurtry JP 2001 Thermotolerance acquisition in broiler chickens by temperature conditioning early in lifethe effect of timing and ambient temperature. Poult Sci. 80:1662-1666. https://doi.org/10.1093/ps/80.12.1662
  26. Yahav S, Shamai A, Haberfeld A, Horev G, Hurwitz S, Einat M 1997 Induction of thermotolerance in chickens by temperature conditioning: Heat shock protein expression. Ann N Y Acad Sci. 813:628-636. https://doi.org/10.1111/j.1749-6632.1997.tb51757.x
  27. Yalcin S, Ozkan S, Cabuk M, Siegel PB 2003 Criteria for evaluating husbandry practices to alleviate heat stress in broilers. J Appl Poult Res. 12:382-388. https://doi.org/10.1093/japr/12.3.382
  28. Yalcm S, Ozkan S, Cabuk M, Buyse J, Decuypere E, Siegel PB 2005 Pre- and postnatal conditioning induced thermotolerance on body weight, physiological responses and relative asymmetry of broilers originating from young and old breeder flocks. Poult Sci. 84:967-976. https://doi.org/10.1093/ps/84.6.967
  29. Yoon HS, Hwangbo J, Yang Y-R, Kim J, Kim Y-H, Park B, Choi Y-H 2014 Effects of early heat conditioning on performance in broilers exposed to heat stress. Korean J Poult Sci. 41:297-303. https://doi.org/10.5536/KJPS.2014.41.4.297