Evaluation of Pregnancy Rate and Length of Pregnancy after Artificial Insemination in Zwartbles Sheep

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F20%3A43919266" target="_blank" >RIV/62156489:43210/20:43919266 - isvavai.cz</a>

Result on the web

<a href="https://mnet.mendelu.cz/mendelnet2020/mnet_2020_full.pdf" target="_blank" >https://mnet.mendelu.cz/mendelnet2020/mnet_2020_full.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Evaluation of Pregnancy Rate and Length of Pregnancy after Artificial Insemination in Zwartbles Sheep

Original language description

The oestrus cycle synchronization and artificial insemination are some of the most frequently used biotechnical methods of reproduction. They are used mainly to achieve easier breeding and shortening of the lambing period. An exact determination of the lambing period (according to the length of the pregnancy) is essential for the breeding process optimization, namely it allows a precise timing of the lambing period. The experiment monitors forty eight Zwartbles ewes, whose oestrus cycles were first synchronized with the use of hormonal intravaginal sponges Ovigest. The subsequent intracervical insemination was done using fresh, diluted and chilled semen from rams of the Zbyšek and Zachari lineages extracted into an artificial vagina. The pregnancy rates after insemination and after the subsequent breeding of the barren ewes in a harem were determined according to the pregnancy detection and the subsequent lambing times. The overall pregnancy length in the artificially inseminated animals was determined through marking the exact date and time of insemination and the lambing period of each animal. The pregnancy rate after insemination was 63.6% for ram Zbyšek and 23.1% for ram Zachari. The overall pregnancy rate after insemination was 41.7%, and after the subsequent natural breeding of the barren ewes in harems the overall pregnancy rate was 93.8%. The pregnancy periods generally ranged between 141 and 147 days and the lambing itself took place between the 144th and 146th day in 70% of the cases.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

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

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Article name in the collection

MendelNet 2020: Proceedings of International PhD Students Conference

ISBN

978-80-7509-765-1

ISSN

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e-ISSN

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Number of pages

5

Pages from-to

142-146

Publisher name

Mendelova univerzita v Brně

Place of publication

Brno

Event location

Brno

Event date

Nov 11, 2020

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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