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Reproductive status of a female white cockatoo (Cacatua alba) based on relationships among urofecal steroid hormone dynamics, molting, and body weight
The detailed reproductive physiology of cockatoos based on gonadal hormone dynamics is unclear. In this study, we aimed to investigate ovarian activity by monitoring urofecal sex steroid hormone profiles in a captive female white cockatoo (Cacatua alba) and to noninvasively reveal basic reproductive...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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The Japanese Society of Veterinary Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10017294/ https://www.ncbi.nlm.nih.gov/pubmed/36574998 http://dx.doi.org/10.1292/jvms.22-0331 |
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author | KUSUDA, Satoshi HASHIZUME, Ryoko YOSHIKAWA, Akari KIMPARA, Hiromu SANADA, Naoko SANADA, Yasuyuki |
author_facet | KUSUDA, Satoshi HASHIZUME, Ryoko YOSHIKAWA, Akari KIMPARA, Hiromu SANADA, Naoko SANADA, Yasuyuki |
author_sort | KUSUDA, Satoshi |
collection | PubMed |
description | The detailed reproductive physiology of cockatoos based on gonadal hormone dynamics is unclear. In this study, we aimed to investigate ovarian activity by monitoring urofecal sex steroid hormone profiles in a captive female white cockatoo (Cacatua alba) and to noninvasively reveal basic reproductive physiology by comparing the hormone profiles with the laying dates, body mass changes, and molt progress. Urofeces were collected regularly for approximately 4 years from one female that frequently laid unfertilized eggs under single-rearing conditions. Urofecal progesterone (P(4)) and estradiol-17β (E(2)) were measured by enzyme immunoassay. In addition, body mass and the number of fallen feathers were measured periodically. The urofecal P(4) concentration peaked at an average of 17.7 days after the start of the rise in urofecal E(2) concentration, and egg laying began on the day after the peak urofecal P(4) concentration. The clutch size was usually two eggs, with an average interval of 4.5 days between eggs in each egg-laying cycle. There was a significant correlation between the dynamics of E(2) concentration in urofeces and body mass. The results strongly suggest that E(2) and P(4) reflect the follicle growth and ovulation status, respectively, and that noninvasive monitoring of hormone dynamics using urofeces can accurately capture ovarian activity in the white cockatoo. Furthermore, changes in body mass can predict follicular growth, and reproduction and molt are antagonistic. |
format | Online Article Text |
id | pubmed-10017294 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Japanese Society of Veterinary Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-100172942023-03-17 Reproductive status of a female white cockatoo (Cacatua alba) based on relationships among urofecal steroid hormone dynamics, molting, and body weight KUSUDA, Satoshi HASHIZUME, Ryoko YOSHIKAWA, Akari KIMPARA, Hiromu SANADA, Naoko SANADA, Yasuyuki J Vet Med Sci Physiology The detailed reproductive physiology of cockatoos based on gonadal hormone dynamics is unclear. In this study, we aimed to investigate ovarian activity by monitoring urofecal sex steroid hormone profiles in a captive female white cockatoo (Cacatua alba) and to noninvasively reveal basic reproductive physiology by comparing the hormone profiles with the laying dates, body mass changes, and molt progress. Urofeces were collected regularly for approximately 4 years from one female that frequently laid unfertilized eggs under single-rearing conditions. Urofecal progesterone (P(4)) and estradiol-17β (E(2)) were measured by enzyme immunoassay. In addition, body mass and the number of fallen feathers were measured periodically. The urofecal P(4) concentration peaked at an average of 17.7 days after the start of the rise in urofecal E(2) concentration, and egg laying began on the day after the peak urofecal P(4) concentration. The clutch size was usually two eggs, with an average interval of 4.5 days between eggs in each egg-laying cycle. There was a significant correlation between the dynamics of E(2) concentration in urofeces and body mass. The results strongly suggest that E(2) and P(4) reflect the follicle growth and ovulation status, respectively, and that noninvasive monitoring of hormone dynamics using urofeces can accurately capture ovarian activity in the white cockatoo. Furthermore, changes in body mass can predict follicular growth, and reproduction and molt are antagonistic. The Japanese Society of Veterinary Science 2022-12-27 2023-02 /pmc/articles/PMC10017294/ /pubmed/36574998 http://dx.doi.org/10.1292/jvms.22-0331 Text en ©2023 The Japanese Society of Veterinary Science https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. (CC-BY-NC-ND 4.0: https://creativecommons.org/licenses/by-nc-nd/4.0/) |
spellingShingle | Physiology KUSUDA, Satoshi HASHIZUME, Ryoko YOSHIKAWA, Akari KIMPARA, Hiromu SANADA, Naoko SANADA, Yasuyuki Reproductive status of a female white cockatoo (Cacatua alba) based on relationships among urofecal steroid hormone dynamics, molting, and body weight |
title | Reproductive status of a female white cockatoo (Cacatua
alba) based on relationships among urofecal steroid hormone dynamics, molting,
and body weight |
title_full | Reproductive status of a female white cockatoo (Cacatua
alba) based on relationships among urofecal steroid hormone dynamics, molting,
and body weight |
title_fullStr | Reproductive status of a female white cockatoo (Cacatua
alba) based on relationships among urofecal steroid hormone dynamics, molting,
and body weight |
title_full_unstemmed | Reproductive status of a female white cockatoo (Cacatua
alba) based on relationships among urofecal steroid hormone dynamics, molting,
and body weight |
title_short | Reproductive status of a female white cockatoo (Cacatua
alba) based on relationships among urofecal steroid hormone dynamics, molting,
and body weight |
title_sort | reproductive status of a female white cockatoo (cacatua
alba) based on relationships among urofecal steroid hormone dynamics, molting,
and body weight |
topic | Physiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10017294/ https://www.ncbi.nlm.nih.gov/pubmed/36574998 http://dx.doi.org/10.1292/jvms.22-0331 |
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