A short-term supranutritional vitamin E supplementation alleviated respiratory alkalosis but did not reduce oxidative stress in heat stressed pigs

OBJECTIVE: Heat stress (HS) triggers oxidative stress and respiratory alkalosis in pigs. The objective of this experiment was to study whether a short-term supranutritional amount of dietary vitamin E (VE) can mitigate oxidative stress and respiratory alkalosis in heat-stressed pigs

Bibliographische Detailangaben
Veröffentlicht in:Asian-Australasian journal of animal sciences. - 1998. - 31(2018), 2 vom: 12. Feb., Seite 263-269
1. Verfasser: Liu, Fan (VerfasserIn)
Weitere Verfasser: Celi, Pietro, Chauhan, Surinder Singh, Cottrell, Jeremy James, Leury, Brian Joseph, Dunshea, Frank Rowland
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Asian-Australasian journal of animal sciences
Schlagworte:Journal Article Heat Stress Oxidative Stress Physiology Pigs Respiratory Alkalosis Vitamin E
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245 1 2 |a A short-term supranutritional vitamin E supplementation alleviated respiratory alkalosis but did not reduce oxidative stress in heat stressed pigs 
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520 |a OBJECTIVE: Heat stress (HS) triggers oxidative stress and respiratory alkalosis in pigs. The objective of this experiment was to study whether a short-term supranutritional amount of dietary vitamin E (VE) can mitigate oxidative stress and respiratory alkalosis in heat-stressed pigs 
520 |a METHODS: A total of 24 pigs were given either a control diet (17 IU/kg VE) or a high VE (200 IU/kg VE; HiVE) diet for 14 d, then exposed to thermoneutral (TN; 20°C, 45% humidity) or HS (35°C, 35% to 45% humidity, 8 h daily) conditions for 7 d. Respiration rate and rectal temperature were measured three times daily during the thermal exposure. Blood gas variables and oxidative stress markers were studied in blood samples collected on d 7 
520 |a RESULTS: Although HiVE diet did not affect the elevated rectal temperature or respiration rate observed during HS, it alleviated (all p<0.05 for diet×temperature) the loss of blood CO2 partial pressure and bicarbonate, as well as the increase in blood pH in the heat-stressed pigs. The HS reduced (p = 0.003) plasma biological antioxidant potential (BAP) and tended to increase (p = 0.067) advanced oxidized protein products (AOPP) in the heat-stressed pigs, suggesting HS triggers oxidative stress. The HiVE diet did not affect plasma BAP or AOPP. Only under TN conditions the HiVE diet reduced the plasma reactive oxygen metabolites (p<0.05 for diet× temperature) 
520 |a CONCLUSION: A short-term supplementation with 200 IU/kg VE partially alleviated respiratory alkalosis but did not reduce oxidative stress in heat-stressed pigs 
650 4 |a Journal Article 
650 4 |a Heat Stress 
650 4 |a Oxidative Stress 
650 4 |a Physiology 
650 4 |a Pigs 
650 4 |a Respiratory Alkalosis 
650 4 |a Vitamin E 
700 1 |a Celi, Pietro  |e verfasserin  |4 aut 
700 1 |a Chauhan, Surinder Singh  |e verfasserin  |4 aut 
700 1 |a Cottrell, Jeremy James  |e verfasserin  |4 aut 
700 1 |a Leury, Brian Joseph  |e verfasserin  |4 aut 
700 1 |a Dunshea, Frank Rowland  |e verfasserin  |4 aut 
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773 1 8 |g volume:31  |g year:2018  |g number:2  |g day:12  |g month:02  |g pages:263-269 
856 4 0 |u http://dx.doi.org/10.5713/ajas.17.0256  |3 Volltext 
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