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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.1
- 수록면
- 531 - 544 (14page)
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초록· 키워드
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Heat stress (HS) damages health and decreases performance variables in pigs, and if severe enough, causes mortality. However, metabolic changes under HS and recovery following HS are poorly understood. Therefore, this study was aimed to expose the essential mechanisms by which growing pigs respond to HS and the temporal pattern of plasma concentrations (PC) of amino acids (AAs) and metabolites. Crossbred male growing pigs were penned separately and allowed to adapt to thermal-neutral (TN) conditions (20℃ and 80% relative humidity; TN[- 1D]). On the first day, all pigs were exposed to HS for 24 h (36℃ and 60% relative humidity), then to TN conditions for 5 days (TN[2D] to TN[5D]). All pigs had ad libitum access to water and 3 kg feed twice daily. Rectal temperature (RT) and feed intake (FI) were determined daily. HS pigs had higher RT (40.72℃) and lower (50%) FI than TN(-1D) pigs (p < 0.01). The PC of indispensable (threonine, valine, and methionine) and dispensable (cysteine and tyrosine) AAs were higher (p < 0.05) in HS than TN(-1D) pigs and remained increased during recovery time. Nonprotein α-aminobutyric acid and β-alanine concentrations were higher (p < 0.05) in HS than TN(-1D) pigs. The metabolite concentration of creatinine was higher (p < 0.01) under HS treatment than other treatments, but that of alanine and leucine remained increased (p < 0.05) through 5 d of recovery. In summary, some major differences were found in plasma AA profiles and metabolites between HS- and TN-condition pigs. This indicates that the HS pigs were forced to alter their metabolism, and these results provide information about mechanisms of acute HS responses relative to the recovery time.
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등록된 정보가 없습니다.
참고문헌 (42)
참고문헌 신청
Intergovernmental Panel on Climate Change / 2014 / Climate change: Synthesis report. Contribution of working group Ⅰ, Ⅱ and Ⅲ to the fifth assessment report of the Intergovernmental Panel on Climate Change
Intergovernmental Panel on Climate Change / 2018 / Global Warming of 1.5℃. An IPCC special report on the impacts of global warming of 1.5℃ above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty
N.R. St-Pierre / 2003 / Economic Losses from Heat Stress by US Livestock Industries / Journal of Dairy Science 86:E52~E77
Lance H. Baumgard / 2013 / Effects of Heat Stress on Postabsorptive Metabolism and Energetics / Annual Review of Animal Biosciences 1(1):311~337
J. J. Cottrell / 2015 / Nutritional strategies to alleviate heat stress in pigs / Animal Production Science 55(12):1391~1402
Intergovernmental Panel on Climate Change / 2018 / Global Warming of 1.5℃. An IPCC special report on the impacts of global warming of 1.5℃ above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty
N.R. St-Pierre / 2003 / Economic Losses from Heat Stress by US Livestock Industries / Journal of Dairy Science 86:E52~E77
Lance H. Baumgard / 2013 / Effects of Heat Stress on Postabsorptive Metabolism and Energetics / Annual Review of Animal Biosciences 1(1):311~337
J. J. Cottrell / 2015 / Nutritional strategies to alleviate heat stress in pigs / Animal Production Science 55(12):1391~1402
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