Circadian rhythms of redox states and total locomotor activity in dairy cattle

C. Giannetto, F. Fazio, A. Assenza, G. Caola, P. Pennisi and G. Piccione
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C. Giannetto: Department of Experimental Sciences and Applied Biotechnology, Laboratory of Veterinary Chronophysiology, University of Messina, Messina, Italy
F. Fazio: Department of Experimental Sciences and Applied Biotechnology, Laboratory of Veterinary Chronophysiology, University of Messina, Messina, Italy
A. Assenza: Department of Experimental Sciences and Applied Biotechnology, Laboratory of Veterinary Chronophysiology, University of Messina, Messina, Italy
G. Caola: Department of Experimental Sciences and Applied Biotechnology, Laboratory of Veterinary Chronophysiology, University of Messina, Messina, Italy
P. Pennisi: Department of Agronomic and Agrochemical Sciences and Animal Production, Section of Animal Production, University of Catania, Catania, Italy
G. Piccione: Department of Experimental Sciences and Applied Biotechnology, Laboratory of Veterinary Chronophysiology, University of Messina, Messina, Italy

Czech Journal of Animal Science, 2010, vol. 55, issue 5, 183-189

Abstract: We want to study the circadian rhythm of dROMs and anti-oxidative power in dairy cattle during dry period and the possible involvement of the circadian organization of rest/activity cycles in the fluctuation of redox state. For this purpose we recorded TLA in five clinically healthy Bruna Italian dairy cattle by means of an actigraphy-based data logger, Actiwatch-Mini®. Blood samples were collected every 3 hours over a 48-hour period for the assessment of free radicals (dROMs) and the antioxidant power: antioxidant barrier (Oxy-ads) and thiol-antioxidant barrier (SHp). All animals were in the same productive period (dry) and they were housed in the same stable under natural photoperiod and ambient temperature. One-way repeated measure ANOVA was used to determine a statistical significant effect of time on the studied parameters. A trigonometric statistical model was applied to characterize the main rhythmic parameters according to the single cosinor procedure. A significant effect of time on all studied parameters was observed. They showed a diurnal acrophase and different degrees of robustness of rhythms. In conclusion, we can claim that there is a synergism between the dROM circadian rhythm and the circadian rhythm of anti-oxidative power. These rhythms do not have any implication for the issue of causation with the TLA circadian rhythms.

Keywords: dairy cattle; free radicals; oxidative power; total locomotor activity; daily rhythm (search for similar items in EconPapers)
Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:55:y:2010:i:5:id:306-2009-cjas

DOI: 10.17221/306/2009-CJAS

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