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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/00027014:_____/07:#0000406

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

<a href="/cs/project/GD523%2F03%2FH076" target="_blank" >GD523/03/H076: Zvýšení metodologické úrovně a teoretického vzdělání studentů akreditovaného DSP 4103V Zootechnika - perspektivního stud. oboru obecná zootechnika</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

Applied Animal Behaiour Science

ISSN

0168-1591

e-ISSN

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Svazek periodika

105

Číslo periodika v rámci svazku

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Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

192-204

Kód UT WoS článku

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EID výsledku v databázi Scopus

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