2018
DOI: 10.1017/s1751731117002725
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Indices of heart rate variability as potential early markers of metabolic stress and compromised regulatory capacity in dried-off high-yielding dairy cows

Abstract: High performing dairy cows experience distinct metabolic stress during periods of negative energy balance. Subclinical disorders of the cow's energy metabolism facilitate failure of adaptational responses resulting in health problems and reduced performance. The autonomic nervous system (ANS) with its sympathetic and parasympathetic branches plays a predominant role in adaption to inadequate energy and/or fuel availability and mediation of the stress response. Therefore, we hypothesize that indices of heart ra… Show more

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Cited by 21 publications
(19 citation statements)
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“…For instance, overproduction of ketones such as BHB occurs during times of high circulating NEFA concentrations when there is not a sufficient amount of Kreb's cycle intermediates to appropriately oxidize the acetyl coenzyme A produced by NEFA (Kuhla et al, 2016;Han van der Kolk et al, 2017). Additionally, increased concentrations of certain biomarkers, such as NEFA and BHB, have been linked to early-lactation disease and altered immune competence (Erdmann et al, 2018). Furthermore, the presence of aberrant nutrient metabolism, chronic inflammation, or oxidative stress can intensify the other factors that can cause metabolic stress, causing further problems (Trevisi et al, 2012;Esposito et al, 2014;Sordillo and Mavangira, 2014).…”
Section: Introductionmentioning
confidence: 99%
“…For instance, overproduction of ketones such as BHB occurs during times of high circulating NEFA concentrations when there is not a sufficient amount of Kreb's cycle intermediates to appropriately oxidize the acetyl coenzyme A produced by NEFA (Kuhla et al, 2016;Han van der Kolk et al, 2017). Additionally, increased concentrations of certain biomarkers, such as NEFA and BHB, have been linked to early-lactation disease and altered immune competence (Erdmann et al, 2018). Furthermore, the presence of aberrant nutrient metabolism, chronic inflammation, or oxidative stress can intensify the other factors that can cause metabolic stress, causing further problems (Trevisi et al, 2012;Esposito et al, 2014;Sordillo and Mavangira, 2014).…”
Section: Introductionmentioning
confidence: 99%
“…Circadian variations in HR and arterial blood pressure in farm animal species is well known (Piccione et al, 2005), and HR has been used as a measure of autonomic regulation of cardiac activity in farm animals to assess stress and well-being under various housing and management conditions (von Borell et al, 2007). Furthermore, changes in HR are a possible early indicator of metabolic stress in cows (Erdmann et al, 2018). The circadian rhythm in activity is disrupted under chronic stress in animals and humans, and it can be less marked if the animal is diseased.…”
Section: Discussionmentioning
confidence: 99%
“…Meat flavours are related to changes in the metabolic rate and energy expenditure under stress (Castro et al, ; Cladis, Kleiner, Freiser, & Santerre, ; Hardy & Lee, ; Whiteley & Faulkner, ). A lower HRV represents a slower metabolic rate under stress in mammals (von Borell et al, ; Erdmann et al, ; Pohlin et al, ). The temperatures causing lower HRV were 10, 14, 18 and 22°C obtained from the experiment with ascending temperatures (Table ), and those were 2, 6, 10 and 14°C from the experiment with descending temperatures (Table ).…”
Section: Discussionmentioning
confidence: 99%