The effects of short-term antioxidant supplementation on oxidative stress and flight performance in adult budgerigars Melopsittacus undulatus

The Journal of Experimental Biology
Stephen D LarcombeKathryn E Arnold

Abstract

Antioxidants are known to play an important role in quenching reactive oxygen species (ROS), thus ameliorating oxidative stress. Since increased metabolism associated with exercise can increase oxidative stress, dietary antioxidants may be a limiting factor in determining aspects of physical performance. Here we tested whether oxidative stress associated with flight exercise of captive adult budgerigars, Melopsittacus undulatus differed after they received a diet containing either enhanced (EQ) or reduced levels (RQ) of a nutritional supplement (Nutrivit) rich in antioxidants for 4 weeks. We also assessed differences in take-off escape time, a potential fitness-determining physiological capability. Oxidative stress was measured in two ways: comet assay to measure DNA damage; and analysis of malondialdehyde (MDA), a by-product of lipid peroxidation. Flight exercise appeared to increase oxidative stress. Moreover, birds had a higher percentage of intact DNA (fewer alkali labile sites) in one comet measure and lower levels of MDA after an EQ diet than after an RQ diet. We found no difference in flight performance between the two diets. Our results suggested that birds exerted maximum effort in escape flights, regardless of diet. H...Continue Reading

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Citations

Sep 15, 2010·Die Naturwissenschaften·Stephen D LarcombeKathryn E Arnold
Dec 5, 2009·Acta Pharmacologica Sinica·Qing-shan LiuGuan-hua Du
Oct 6, 2009·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·S D LarcombeK E Arnold
Jul 23, 2013·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Mathieu GiraudeauKevin J McGraw
Mar 21, 2015·Sports Medicine·Andrea J Braakhuis, Will G Hopkins
Feb 13, 2014·Physiology & Behavior·Michaël Beaulieu, H Martin Schaefer
Dec 3, 2016·The Journal of Experimental Biology·Clara Cooper-Mullin, Scott R McWilliams
Sep 13, 2019·The Journal of Experimental Biology·Clara Cooper-MullinScott R McWilliams
Jan 1, 2015·Conservation Physiology·S D LarcombeK E Arnold
Nov 28, 2018·Frontiers in Zoology·Melinda A FowlerTony D Williams
Feb 10, 2021·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Wales A CarterScott R McWilliams
Apr 29, 2011·The Journal of Experimental Biology·Katherine A HerbornKathryn E Arnold
May 13, 2015·The Journal of Experimental Biology·Marie VaugoyeauClotilde Biard

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