Length of pregnancy in inseminated Zwartbles sheep with previously synchronized oestrus cycle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F19%3A43916980" target="_blank" >RIV/62156489:43210/19:43916980 - isvavai.cz</a>

Výsledek na webu

<a href="https://mnet.mendelu.cz/mendelnet2019/mnet_2019_full.pdf" target="_blank" >https://mnet.mendelu.cz/mendelnet2019/mnet_2019_full.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Length of pregnancy in inseminated Zwartbles sheep with previously synchronized oestrus cycle

Popis výsledku v původním jazyce

Easier breeding and shortening of the lambing period is mainly achieved with the use of insemination with the preceding oestrus cycle synchronization. With these biotechnical methods we are thus able to estimate the time span of lambing. However, another topic closely tied to this issue is the length of pregnancy, which can depend on the breed, the age of the individual animal, the number of foetuses, etc. Higher accuracy in the pregnancy length estimation might again lead to easier breeding and higher quality reproduction. In this research were observed thirty five Zwartbles ewes (from 2017 to 2019), first synchronized using tough intravaginal sponges (hormonal) Chronogest, Ovigest and CIDR (Controlled internal drug release). Afterwards, the ewes were inseminated with fresh, diluted and chilled semen taken from four ram lineages. Due to writing down the exact time of insemination and, subsequently, the exact time of lambing in each individual animal, it was possible to evaluate and compare the pregnancy lengths in individual animals. The total pregnancy rate after insemination was 50% in 2017 and 64.7% in 2018. The pregnancy length ranged between 142 and 148 days, and most of the animals lambed down between the 143rd and 146th day of pregnancy.

Název v anglickém jazyce

Length of pregnancy in inseminated Zwartbles sheep with previously synchronized oestrus cycle

Popis výsledku anglicky

Easier breeding and shortening of the lambing period is mainly achieved with the use of insemination with the preceding oestrus cycle synchronization. With these biotechnical methods we are thus able to estimate the time span of lambing. However, another topic closely tied to this issue is the length of pregnancy, which can depend on the breed, the age of the individual animal, the number of foetuses, etc. Higher accuracy in the pregnancy length estimation might again lead to easier breeding and higher quality reproduction. In this research were observed thirty five Zwartbles ewes (from 2017 to 2019), first synchronized using tough intravaginal sponges (hormonal) Chronogest, Ovigest and CIDR (Controlled internal drug release). Afterwards, the ewes were inseminated with fresh, diluted and chilled semen taken from four ram lineages. Due to writing down the exact time of insemination and, subsequently, the exact time of lambing in each individual animal, it was possible to evaluate and compare the pregnancy lengths in individual animals. The total pregnancy rate after insemination was 50% in 2017 and 64.7% in 2018. The pregnancy length ranged between 142 and 148 days, and most of the animals lambed down between the 143rd and 146th day of pregnancy.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

40201 - Animal and dairy science; (Animal biotechnology to be 4.4)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

MendelNet 2019: Proceedings of International PhD Students Conference

ISBN

978-80-7509-688-3

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

174-179

Název nakladatele

Mendelova univerzita v Brně

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

6. 11. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000576735500031