Noninvasive monitoring of steroid hormone production and activity of zoo-housed banteng (Bos javanicus).

Autor: Kozlowski CP; Department of Reproductive and Behavioral Sciences, Saint Louis Zoo, One Government Drive, Saint Louis, MO 63110, USA. Electronic address: kozlowski@stlzoo.org., Bauman KL; Department of Reproductive and Behavioral Sciences, Saint Louis Zoo, One Government Drive, Saint Louis, MO 63110, USA., Clawitter HL; Department of Reproductive and Behavioral Sciences, Saint Louis Zoo, One Government Drive, Saint Louis, MO 63110, USA., Hall R; University of Kentucky, Lexington, KY 40506, USA., Poelker C; Ungulate Department, Saint Louis Zoo, One Government Drive, Saint Louis, MO 63110, USA., Thier T; Ungulate Department, Saint Louis Zoo, One Government Drive, Saint Louis, MO 63110, USA., Fischer M; Saint Louis Zoo WildCare Park, Saint Louis Zoo, 12385 Larimore Rd, Saint Louis, MO 63138, USA., Powell DM; Department of Reproductive and Behavioral Sciences, Saint Louis Zoo, One Government Drive, Saint Louis, MO 63110, USA.
Jazyk: angličtina
Zdroj: Animal reproduction science [Anim Reprod Sci] 2022 Dec; Vol. 247, pp. 107070. Date of Electronic Publication: 2022 Sep 16.
DOI: 10.1016/j.anireprosci.2022.107070
Abstrakt: This study describes patterns of steroid hormone production and activity for banteng (Bos javanicus), an endangered member of the Bovidae family. Using validated assays, concentrations of fecal progestagens, androgens, and glucocorticoids were quantified for four females and one male at the Saint Louis Zoo. A commercial activity monitor was also validated for assessing movement. The devices were then used to characterize activity in relation to season, reproductive status, and fecal steroid concentrations. General linear mixed models assessed differences in activity and steroid concentrations among individuals, in regards to reproductive status and season. Ovulatory cycle patterns, changes in activity around estrus and parturition, and events correlated with increased glucocorticoid production were also documented. Cycle lengths were 24.7 ± 0.4 days, and cycle lengths varied among individuals. Females cycled year-round, but luteal progestagen concentrations, along with glucocorticoids and male androgens, increased during the summer. Activity also increased in the summer. Progestagen concentrations were greater in pregnant females, and the gestation length of one pregnancy was 254 days. Pregnant females were less active overall, but activity increased the day before parturition. Activity was also greater preceding the onset of the luteal phase. The majority of glucocorticoid concentrations were in the range of baseline concentrations. However, a small number of elevated concentrations were correlated with husbandry and veterinary events. This study is the first to validate non-invasive methods for monitoring reproduction, welfare, and activity of banteng. Our results may contribute to the improved management of captive populations.
Competing Interests: Declarations of interest None.
(Copyright © 2022 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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