Sex of the foetus determines the time of weaning of the previous offspring of captive plains zebra (Equus burchelli).

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F07%3A19718" target="_blank" >RIV/60460709:41210/07:19718 - isvavai.cz</a>

Alternative codes found

RIV/00027014:_____/07:#0000406

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Sex of the foetus determines the time of weaning of the previous offspring of captive plains zebra (Equus burchelli).

Original language description

We examined if captive plains zebra (Equus burchelli) mares change the timing of weaning according to the sex of the suckling foal and of the new impending foetus. We observed 19 captive plains zebra foals, in three different formations, at the Dvůr Králové Zoo. The earliest time for weaning of any foal was recorded at the age of only 243 days. The latest suckling that was ever recorded occurred 83 days before the dam?s next delivery, when the foal was at the age of 355 days. We found that pregnant mares weaned their foals sooner than the non-pregnant mares. Survival analysis revealed that the sex of the foetus was the most influential factor in determining the weaning age of the current foal. Hence, if the foetus was a male, then weaning occurred sooner than if the dam was carrying a female foetus. This finding is the first of this kind among ungulates. The reproductive state of the mare and the sex of her foetus should be considered when interpreting weaning times of equids.

Czech name

Pohlaví fétu určuje čas odstavu předcházejícího mláděte u v zajetí chované zebry stepní

Czech description

We examined if captive plains zebra (Equus burchelli) mares change the timing of weaning according to the sex of the suckling foal and of the new impending foetus. We observed 19 captive plains zebra foals, in three different formations, at the Dvůr Králové Zoo. The earliest time for weaning of any foal was recorded at the age of only 243 days. The latest suckling that was ever recorded occurred 83 days before the dam?s next delivery, when the foal was at the age of 355 days. We found that pregnant mares weaned their foals sooner than the non-pregnant mares. Survival analysis revealed that the sex of the foetus was the most influential factor in determining the weaning age of the current foal. Hence, if the foetus was a male, then weaning occurred sooner than if the dam was carrying a female foetus. This finding is the first of this kind among ungulates. The reproductive state of the mare and the sex of her foetus should be considered when interpreting weaning times of equids.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

<a href="/en/project/GD523%2F03%2FH076" target="_blank" >GD523/03/H076: Enhancing of Methodological Level and Theoretical Education of Students of the Ph. D. Program 4103V - Animal Husbandry - a Perspective Field General Animal Husb</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied Animal Behaiour Science

ISSN

0168-1591

e-ISSN

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Volume of the periodical

105

Issue of the periodical within the volume

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Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

192-204

UT code for WoS article

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EID of the result in the Scopus database

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