Increase of body temperature immediately after ovulation in mares

Epper, Pascale; Glüge, Stefan; Vidondo, Beatriz; Wróbel, Anna; Ott, Thomas; Sieme, Harald; Kaeser, Rebekka; Burger, Dominik

doi:10.1016/j.jevs.2023.104565

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Increase of body temperature immediately after ovulation in mares
Authors:	Epper, Pascale Glüge, Stefan Vidondo, Beatriz Wróbel, Anna Ott, Thomas Sieme, Harald Kaeser, Rebekka Burger, Dominik
et. al:	No
DOI:	10.1016/j.jevs.2023.104565
Published in:	Journal of Equine Veterinary Science
Volume(Issue):	127
Issue:	104565
Issue Date:	18-May-2023
Publisher / Ed. Institution:	Elsevier
ISSN:	0737-0806
Language:	English
Subjects:	Body temperature; Estrus; Horse; Mare; Ovulation
Subject (DDC):	006: Special computer methods 590: Animals (Zoology)
Abstract:	To successfully inseminate mares, precise detection of ovulation time is crucial, especially when using frozen-thawed semen. Monitoring body temperature, as has been described in women, could be a noninvasive way to detect ovulation. The objective of this study was to investigate the relationship between the time of ovulation and the variation of body temperature in mares based on automatic continuous measurements during estrus. The experimental group included 21 mares for 70 analyzed estrous cycles. When the mares showed estrous behavior, they were administered intramuscular deslorelin acetate (2.25 mg) in the evening. At the same time, monitoring of body temperature using a sensor device fixed at the left lateral thorax was started and continued for over 60 hours. In 2-hour intervals, transrectal ultrasonography was performed to detect ovulation. Estimated body temperature in the 6 hours following ovulation detection was on average 0.06°C +/- 0.05°C (mean +/- SD) significantly higher when compared with body temperature at the same time on the preceding day (P = .01). In addition, a significant effect of PGF2α administration for estrus induction on the body temperature was found, being significantly higher until 6 hours before ovulation compared to that of uninduced cycles (P = .005). In conclusion, changes in body temperature during estrus in mares were related to ovulation. The increase in body temperature immediately after ovulation might be used in the future to establish automatized and noninvasive systems to detect ovulation. However, the identified temperature rise is relatively small on average and hardly identifiable in the individual mares.
URI:	https://digitalcollection.zhaw.ch/handle/11475/28083
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	Life Sciences and Facility Management
Organisational Unit:	Institute of Computational Life Sciences (ICLS)
Published as part of the ZHAW project:	PiaBreed: Machine Learning zur automatisierten Ovulations- und Geburtsüberwachung am Pferd
Appears in collections:	Publikationen Life Sciences und Facility Management

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Epper, P., Glüge, S., Vidondo, B., Wróbel, A., Ott, T., Sieme, H., Kaeser, R., & Burger, D. (2023). Increase of body temperature immediately after ovulation in mares. Journal of Equine Veterinary Science, 127(104565). https://doi.org/10.1016/j.jevs.2023.104565

Epper, P. et al. (2023) ‘Increase of body temperature immediately after ovulation in mares’, Journal of Equine Veterinary Science, 127(104565). Available at: https://doi.org/10.1016/j.jevs.2023.104565.

P. Epper et al., “Increase of body temperature immediately after ovulation in mares,” Journal of Equine Veterinary Science, vol. 127, no. 104565, May 2023, doi: 10.1016/j.jevs.2023.104565.

EPPER, Pascale, Stefan GLÜGE, Beatriz VIDONDO, Anna WRÓBEL, Thomas OTT, Harald SIEME, Rebekka KAESER und Dominik BURGER, 2023. Increase of body temperature immediately after ovulation in mares. Journal of Equine Veterinary Science. 18 Mai 2023. Bd. 127, Nr. 104565. DOI 10.1016/j.jevs.2023.104565

Epper, Pascale, Stefan Glüge, Beatriz Vidondo, Anna Wróbel, Thomas Ott, Harald Sieme, Rebekka Kaeser, and Dominik Burger. 2023. “Increase of Body Temperature Immediately after Ovulation in Mares.” Journal of Equine Veterinary Science 127 (104565). https://doi.org/10.1016/j.jevs.2023.104565.

Epper, Pascale, et al. “Increase of Body Temperature Immediately after Ovulation in Mares.” Journal of Equine Veterinary Science, vol. 127, no. 104565, May 2023, https://doi.org/10.1016/j.jevs.2023.104565.