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Effects of Early Heat Conditioning on Performance in Broilers exposed to Heat Stress

사전 고온 적응이 고온 스트레스를 받은 육계의 생산성에 미치는 영향

  • Yoon, HyungSook (Division of Applied Life Sciences (BK21 Plus Program)) ;
  • Hwangbo, Jong (Division of Poultry Science, National Institute of Animal Science, RDA) ;
  • Yang, Young-Rok (Department of Animal Science, Gyeongsang National University) ;
  • Kim, Jimin (Division of Applied Life Sciences (BK21 Plus Program)) ;
  • Kim, Yeon-Hwa (Division of Applied Life Sciences (BK21 Plus Program)) ;
  • Park, Byungsung (Department of Animal Biotechnology, Kangwon National University) ;
  • Choi, Yang-Ho (Department of Animal Science, Gyeongsang National University)
  • 윤형숙 (경상대학교 대학원 응용생명과학부(BK21 Plus Program)) ;
  • 황보종 (농촌진흥청 국립축산과학원 가금과) ;
  • 양영록 (경상대학교 축산학과) ;
  • 김지민 (경상대학교 대학원 응용생명과학부(BK21 Plus Program)) ;
  • 김연화 (경상대학교 대학원 응용생명과학부(BK21 Plus Program)) ;
  • 박병성 (강원대학교 동물생명과학과) ;
  • 최양호 (경상대학교 축산학과)
  • Received : 2014.10.29
  • Accepted : 2014.11.20
  • Published : 2014.12.31

Abstract

Heat manipulation at 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 early heat conditioning at 5 days of age on performance in broilers when re-exposed to heat stress later in life. Day-old, 256 Arbor Acre boiler chicks were housed in two identical rooms where all broilers were exposed to a 23-h light: 1-h dark cycle throughout the study and provided with feed and water ad libitum. At the age of 5 days, one group was exposed to $37^{\circ}C$ for 24 hours and then returned to the temperature at which control birds were maintained (early heat condition group) while the other was maintained without heat modulation (Control). On 21 days, broilers were regrouped into 4 groups (CON+CON: control+control; CON+HS: control+heat stress; HC+CON: heat conditioning+control; HC+HS: heat conditioning+heat stress), and given 7 days for adaptation. On 28 days, birds in one room were exposed to heat stress ($21^{\circ}C{\rightarrow}31^{\circ}C$) for 3 days whereas those in the other were at room temperature. Heat stress resulted in decreased feed intake, water intake, and body weight gain (P<0.05), but increased rectal temperature and mortality (P<0.05). No beneficial effects of heat conditioning were detected when broilers were exposed to heat stress again at later in life. The present results were discussed together with other studies regarding possible differences in methods such as ages of breeders and strains, which may have resulted in the failure of heat conditioning to help broilers resist heat stress.

생애 초기 고온 적응은 이후 고온 스트레스를 받았을 때 닭이 고온 저항성을 획득하는데 도움을 주는 것으로 알려져 있다. 본 연구에서는 5일령의 고온 적응이 이후 고온 스트레스를 받은 육계의 생산성에 미치는 영향을 조사하였다. 초생추 아버에이커를 23시간 점등 1시간 소등의 조명 환경 조건을 가진 동일한 크기의 두 사육실에 수용한 후, 사료와 물을 자유로이 급여하였다. 5일령에 사전 고온 적응구는 24시간 동안 $37^{\circ}C$의 고온에 노출된 후 정상의 온도로 돌려졌고, 대조구에서는 정상적인 감온 일정에 따라 사육되었다. 21일령에 두 사육실의 육계는 각각 두 집단으로 나누어 총 4처리구(CON+CON: control+control; CON+HS: control+heat stress; HC+CON: heat conditioning+control; HC+HS: heat conditioning+heat stress)로 배치하였고, 이 상태에서 7일간의 환경 적응 기간을 가졌다. 28일령에 하나의 사육실에 있는 육계는 3일 동안 고온 스트레스($21^{\circ}C{\rightarrow}31^{\circ}C$)에 노출되었고, 대조구는 실온상태에서 사육되었다. 고온 스트레스 결과, 사료 섭취량 음수량 및 증체량이 유의적으로 감소한 반면(P<0.05), 직장온도와 폐사율은 증가하였다(P<0.05). 따라서 본 연구를 통해 사전 고온 적응의 효과성은 인정되지 않았으며, 이러한 결과는 사전 고온 적응의 효과는 종계의 나이나 계통의 차이에 따라 달리 나타날 수 있기 때문에 현장적용에 신중해야 할 것으로 사료된다.

Keywords

References

  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. 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
  3. Azad MA, Kikusato M, Maekawa T, Shirakawa H, Toyomizu M 2010 Metabolic characteristics and oxidative damage to skeletal muscle in broiler chickens exposed to chronic heat stress. Comp Biochem Physiol A Mol Integr Physiol 155:401-406. https://doi.org/10.1016/j.cbpa.2009.12.011
  4. De Basilio V, Requena F, Leon A, Vilarino M, Picard M 2003 Early age thermal conditioning immediately reduces body temperature of broiler chicks in a tropical environment. Poult Sci 82:1235-1241. https://doi.org/10.1093/ps/82.8.1235
  5. Deyhim F, Teeter RG 1991 Research note: Sodium and potassium chloride drinking water supplementation effects on acid-base balance and plasma corticosterone in broilers reared in thermoneutral and heat-distressed environments. Poult Sci 70:2551-2553. https://doi.org/10.3382/ps.0702551
  6. 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.
  7. 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
  8. Harrison PC, Biellier HV 1969 Physiological response of domestic fowl to abrupt changes of ambient air temperature. Poult Sci 48:1034-1045. https://doi.org/10.3382/ps.0481034
  9. Hassan AM, Reddy PG 2012 Early age thermal conditioning improves broiler chick's response to acute heat stress at marketing age. Am J Anim Vet Sci 7:1-6. https://doi.org/10.3844/ajavsp.2012.1.6
  10. Havenstein GB, Ferket PR, Qureshi MA 2003a Carcass composition and yield of 1957 versus 2001 broilers when fed representative 1957 and 2001 broiler diets. Poult Sci 82:1509-1518. https://doi.org/10.1093/ps/82.10.1509
  11. Havenstein GB, Ferket PR, Qureshi MA 2003b Growth, livability, and feed conversion of 1957 versus 2001 broilers when fed representative 1957 and 2001 broiler diets. Poult Sci 82:1500-1508. https://doi.org/10.1093/ps/82.10.1500
  12. 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
  13. Lu Q, Wen J, Zhang H 2007 Effect of chronic heat exposure on fat deposition and meat quality in two genetic types of chicken. Poult Sci 86:1059-1064. https://doi.org/10.1093/ps/86.6.1059
  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. 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
  16. 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
  17. 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
  18. Tona K, Onagbesan O, Bruggeman V, Collin A, Berri C, Duclos MJ, Tesseraud S, Buyse J, Decuypere E, Yahav S 2008 Effects of heat conditioning at d 16 to 18 of incubation or during early broiler rearing on embryo physiology, post-hatch growth performance and heat tolerance. Arch Geflugelk 72:75-83.
  19. 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
  20. 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
  21. Yalcin S, Ozkan S, Turkmut L, Siegel PB 2001 Responses to heat stress in commercial and local broiler stocks. 1. Performance traits. Br Poult Sci 42:149-152. https://doi.org/10.1080/00071660120048375
  22. 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

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  1. Effects of Repeated High Ambient Temperature on Performance in Broilers Heat-Conditioned at an Early Age vol.42, pp.3, 2015, https://doi.org/10.5536/KJPS.2015.42.3.257