Cited by 55Animal Behavior and Welfare StudiesEffects of Environmental Stressors on LivestockAnimal health and immunology

Identification of chronic stress biomarkers in dairy cows

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Grelet, C., Vanden Dries, V., Leblois, J., Wavreille, J., Mirabito, L., Soyeurt, H., Franceschini, S., Gengler, N. +3 more·2022·animal

Abstract

Stress in dairy herds can occur from multiple sources. When stress becomes chronic because of a long duration and inability of animals to adapt, it is likely to deeply affect the emotional state, health, immunity, fertility and milk production of cows. While assessing chronic stress in herds would be beneficial, no real consensus has emerged from the literature regarding the indicators of interest. The goal of this study was to compare and evaluate potential biomarkers for chronic stress after inducing stress over a 4-week period through severe overstocking, restricted access to feed and isolated unusual events. A total of 30 cows were involved in the experiment and two similar groups were constituted. Over a 4-week period, the 15 cows of the stress group were housed in overstocked conditions, with 4.6 m2 per cow, including resting and feeding areas. In this area, only seven individual places at the feeding area were available for the 15 cows to generate competition for feed access. Twice during the trial and over a period of 2 h, an additional stress was induced by moving cows to an unfamiliar barn and diffusion of stressing noises (dog barking). Meanwhile, the 15 cows of the control group stayed in the original barn, with more than 10 m2 per cow and more individual places at the feeding area than cow number. On a weekly basis, several variables considered as potential biomarkers for chronic stress were recorded. Collected data were analysed using single trait linear repeated mixed models. No differences were observed regarding milk yield, BW of cows or body condition score but the milk loss was more pronounced in the stress group. The activity was more heterogeneous and the rumination of cows was lower in the stress group. The heart rate was lower in the stress group and showed more heterogeneity at the end of the stress period. No differences were observed regarding salivary cortisol, blood glucose, β-endorphin, thyroxine and leucocyte profile. A higher level of hair cortisol and blood fructosamine were observed in the stress group at the end of the stress period. Regarding the practical use of the highlighted biomarkers, milk loss may be an effective and easy way to detect general problems, including stress. The blood fructosamine and the hair cortisol concentrations are promising indicators to assess chronic stress in commercial farms.

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  1. González-de-la-Vara, M. del R., Valdez, R.A., Lemus-Ramirez, V., Vázquez-Chagoyán, J.C., Villa-Godoy, A., Romano, M.C., 2011. Effects of adrenocorticotropic hormone challenge and age on hair cortisol concentrations in dairy cattle. Canadian Journal of Veterinary Research 75, 216-221.

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Authors
Grelet, C., Vanden Dries, V., Leblois, J., Wavreille, J., Mirabito, L., Soyeurt, H., Franceschini, S., Gengler, N., Brostaux, Y., HappyMoo Consortium, & Dehareng, F.
Affiliations
  • Walloon Agricultural Research Centre (BE)
  • Association Wallonne des Eleveurs (BE)
  • Institut de l’Elevage (FR)
  • University of Liège (BE)
Corresponding author
Dehareng, F.
Venue
animal
Publisher
Elsevier BV
Published
2022-05
Volume
16
Issue
5
Pages
100502
ISSN
1751-7311 (ISSN-L)
OpenAlex
W4226189990
Cited by
55
References
72
Citations by year
2026: 15 · 2025: 14 · 2024: 13 · 2023: 10 · 2022: 3
FWCI
11.06
Type
journal article
Language
en
Open access
Locations
  • animal (publishedVersion, cc-by-nc-nd)
  • Research Square (acceptedVersion, cc-by)
  • PubMed (publishedVersion)
  • ORBi (University of Liège) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Interreg Europe (NWE730)
  • Walloon Region
  • Waalse Gewest
Topics
  • Health Sciences › Veterinary › Small Animals › Animal Behavior and Welfare Studies
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Effects of Environmental Stressors on Livestock
  • Health Sciences › Veterinary › Small Animals › Animal health and immunology
Keywords
chronic stress, dairy cattle, stress biomarkers, overstocking, feed competition, noise stress, milk yield, milk production loss, heart rate, salivary cortisol, hair cortisol, rumination, beta-endorphin, thyroxine, blood glucose, welfare analysis
MeSH terms
Animals, Cattle, Female, Hydrocortisone, Lactation, Milk, Biomarkers, Fructosamine

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