Lower quality bovine embryos may be successfully used for sex determination

The aim of this study was to evaluate the effect of sex determination procedures in Day 7 to Day 8 bovine embryos of various quality. For the purposes of comparison we used high quality (HQ) as well as lower quality (LQ) embryos obtained from superovulated donors. The healthy embryonic cells isolate...

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Bibliographic Details
Published in:Veterinární medicína 2007-12, Vol.52 (12), p.540-546
Main Authors: Lopatarova, M.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu, Cech, S.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu, Krontorad, P.,BOVET, Sloupnice (Czech Republic), Holy, L.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu, Hlavicova, J.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu, Dolezel, R.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prezvykavcu
Format: Article
Language:English
Subjects:
ANIMAL EMBRYOS
BIOPSIA
BIOPSIE
BIOPSY
Blastomeres
BOVIN
Calves
CATTLE
Chromosomes
CULTIVO DE EMBRIONES
CULTURE D'EMBRYON
DETERMINACION DEL SEXO
DETERMINATION DU SEXE
EMBRIONES ANIMALES
embryo
EMBRYO CULTURE
EMBRYO TRANSFER
EMBRYON ANIMAL
Embryos
Extrusion
GANADO BOVINO
Gender
GESTACION
GESTATION
http://www.fao.org/aos/agrovoc#c_1391
http://www.fao.org/aos/agrovoc#c_14226
http://www.fao.org/aos/agrovoc#c_15965
http://www.fao.org/aos/agrovoc#c_16102
http://www.fao.org/aos/agrovoc#c_25388
http://www.fao.org/aos/agrovoc#c_2544
http://www.fao.org/aos/agrovoc#c_34079
http://www.fao.org/aos/agrovoc#c_6166
PCR
Polymerase chain reaction
PREGNANCY
Progeny
Sex
SEX DETERMINATION
superovulation
TRANSFERENCIA DE EMBRIONES
TRANSFERT EMBRYONNAIRE
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Summary:The aim of this study was to evaluate the effect of sex determination procedures in Day 7 to Day 8 bovine embryos of various quality. For the purposes of comparison we used high quality (HQ) as well as lower quality (LQ) embryos obtained from superovulated donors. The healthy embryonic cells isolated from HQ embryos and blastomeres protruding into the perivitelline space of LQ embryos were analysed by polymerase chain reactions (PCR) using primers specific for the Y chromosome determinant. After microsurgical intervention and completion of sex determination, the female embryos were then transferred (ET) to synchronized recipients. A total of 310 embryos of HQ were used and gender was safely determined in 275 cases (88.7%). PCR analysis of extruded cells isolated from 170 LQ embryos was carried out with certainty only in 111 embryos (65.3%, P less than 0.01). After ET of 122 HQ sex defined embryos, pregnancy was established in 69 recipients (56.6%). A similar conception rate 51.9% (27/52) was found after the ET of sex defined embryos designated as LQ. The accuracy of analysis was confirmed after calving and revealed that designated female sex coincided with 95.5% and 96.2% of calves when HQ and LQ embryos were transferred, respectively. Our results clearly show that a microsurgical technique in combination with PCR method represents a rapid and reliable approach for sex determination in HQ as well as in LQ preimplantation bovine embryos and can be used in field conditions for the regulation of the sex of progeny in selected herds.
ISSN:0375-8427
1805-9392
DOI:10.17221/1884-VETMED