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Title:Hair dehydroepiandrosterone in newborn beef calves from birth up to 10 months of age
Authors:ID Probo, Monica, Department of Veterinary Medicine, University of Milan, Milan, Italy (Author)
ID Peric, Tanja, Laboratory for Environmental and Life Sciences, University of Nova Gorica, Nova Gorica, Slovenia (Author)
ID Faustini, Massimo, Department of Veterinary Medicine, University of Milan, Milan, Italy (Author)
ID Prandi, Alberto, Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy (Author)
ID Comin, Antonella, Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy (Author)
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Typology:1.12 - Published Scientific Conference Contribution Abstract
Organization:UNG - University of Nova Gorica
Abstract:Although steroidogenesis in maternal, placental and fetal compartments is interdependent, the maternal and fetal hypothalamic-pituitary-adrenal (HPA) axes represent separate biological systems, with dehydroepiandrosterone (DHEA) recognized as the main fetal steroid. Fetal steroids are likely to influence development and have long-term effects on HPA function. Hair analysis represents a promising methodological approach for the non-invasive measurement of steroids, allowing for a retrospective analysis of the total exposure to steroids over time, and avoiding the influence of acute events or circadian fluctuations (Schury et al. 2017, BMC Psychiatry 17:213). Hair coat DHEA (hcD) concentrations have been investigated in cows (Peric et al. 2017, Livestock Sci 202:39–43), but no studies have been performed on newborn calves. Hair samples of 12 beef calves (7 males, 5 females) were collected by shaving at calving (T0) and monthly up to 10 months of age (T1-T10), only on the re-growth area. Hair DHEA was analyzed by RIA2. Statistical analysis revealed that hcD concentrations in calves were influenced by age, with higher levels at T1 and T2 compared to the other samples (p < 0.05). HcD levels were not influenced by newborn gender, birth weight and Apgar score. These data demonstrate that DHEA is quantifiable in the hair coat of newborn calves, and that hcD levels are influenced by the age of calves. The higher accumulation of DHEA was detected from birth to 2 months of age, suggesting that DHEA continues to be secreted by the newborn calf also beyond birth and could be involved in the events occurring during the first months of age.
Keywords:hair, dehydroepiandrosterone, cattle, calf
Publication status:Published
Year of publishing:2018
Number of pages:1
PID:20.500.12556/RUNG-4461-5b5bb57d-14fe-07ec-1b11-361e04103c9b New window
COBISS.SI-ID:5369083 New window
Publication date in RUNG:09.04.2019
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Record is a part of a monograph

Title:Proceedings of the 22nd Annual Conference of the European Society for Domestic Animal Reproduction (ESDAR), 27-29 September, 2018, Cordoba, Spain.
Place of publishing:Cordoba
Year of publishing:2018
Conference organizer:European Society for Domestic Animal Reproduction (ESDAR)
Collection title:Reproduction in domestic animals
Collection numbering:53 (S2)
Collection ISSN:0936-6768