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

Abstract

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.

Rumination and Activity Patterns in Angus and Angus-Cross Beef Calves: Influences of Sex, Breed, and Backgrounding Diet

“…Similarly, the result of the present study revealed a circadian rhythm of rumination as described previously by Krause et al [51] and Adin et al [16]. The circadian pattern of activity behavior agrees with the findings by Piccione et al [30] and Giannetto et al [52], who observed that cattle exhibited greater activity during the photophase than during the scotophase. Sheanhan et al [53] opined that activity behavior, such as grazing, is influenced by changes in photoperiod and rumination, and activity behaviors (such as grazing) tend to be inversely correlated.…”

Real-Time Measurement of the Daily Total Locomotor Behavior in Calves Reared in an Intensive Management System for the Possible Application in Precision Livestock Farming

“…It has been observed that the management conditions highly influenced the robustness of rhythm in this species. In particular, when animals have been housed under an artificial photoperiod and indoor ambient temperature a robustness of rhythm of about 51.0% has been observed [ 12 ]; the monitoring of total locomotor activity in cows housed in stable conditions showed robustness of rhythms of about 17.0% [ 13 ]. Additionally, housing conditions have been observed to influence the total locomotor activity daily rhythm reducing the amplitude value in cows living in stable respect to the free-ranging paddock animals [ 14 ].…”

Comparison of daily rhythms of oxygen metabolites and serum barrier to oxidation in domestic animals

“…Rhythmic changes in oxidative damage of protein and lipid molecules are also reported [13]. In sheep and cows, circadian rhythm changes of oxidative stress markers in relation to reproductive status and daily total activity have been studied [14][15][16].…”