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154793

THE EFFECT OF VITRIFICATION DEVICE AND EMBRYONIC STAGE ON SURVIVAL AND DEVELOPMENTAL COMPETENCE OF GABALI RABBIT EMBRYOS

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Last updated: 04 Jan 2025

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Abstract

the current study aimed to evaluate the effect of vitrification device (straw or cryotop) and embryonic stage (4-8 cell or morula stages) on survivability, normality and in vitro embryo development rate into blastocysts/hatched blastocysts. Total of 24 mature rabbit does of Gabali breed (5-6 months of age, 3-3.5 kg live body weight) were used in this study as embryo donors. Rabbit does were superovulated by PMSG and hCG. Embryos at 4-8 cell stage were recovered by flushing oviducts 32–43h post-mating, while, embryos at morula stage were recovered by flushing oviducts 64-66 h post-mating. Embryos were vitrified by straw or cryotop. Survival and normality rates were determined. The vitrified embryos were in vitro cultured for 3-5 days to record blastocyst and hatching blastocyst formation rates. Results showed insignificant differences in survival and normality rates of vitrified embryos as affected by embryonic stage, although there were a tendency of higher rates yielded from embryos at morula than at 4-8 cell stage (87.7 and 89.2% vs. 85.9 and 85.2%, respectively). Survival and normality rates were higher (P<0.05) using cryotop than straw, being 92.1 and 93.1% using cryotop versus 81.7 and 81.0% using straw, respectively. Expansion and hatching rates were higher (P<0.05) for vitrified embryos at morula than at 4-8cell stage (80.0 and 71.5% vs. 66.0 and 54.0%, respectively) and using cryotop than straw (81.6 and 75.3 vs. 63.1 and 48.2%, respectively).The current study could be conclude that using the cryotop method to vitrify rabbit embryos rather than straw method at various developmental stages, particulary at morula stage.

DOI

10.21608/ejar.2015.154793

Keywords

Rabbit embryo, Vitrification, crypto, Survival, Blastocyst

Authors

First Name

HESHAM A.

Last Name

FARAG

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Affiliation

Agricultural Engineering Research Institute, Agricultural Research Center,Giza, Egypt.

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First Name

HAZEM S.

Last Name

MEHAWED

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Affiliation

Agricultural Engineering Research Institute, Agricultural Research Center,Giza, Egypt.

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First Name

OMELKHER M.

Last Name

GUERO

MiddleName

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Affiliation

Centre for Geological and Mining Research, (Cell SIGMINES) Niamey, Niger

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First Name

AYMEN M.

Last Name

SAEED

MiddleName

-

Affiliation

Biotech. Dept., Anim. Prod. Res. Inst., ARC, Egypt.

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Volume

93

Article Issue

2

Related Issue

22643

Issue Date

2015-07-01

Receive Date

2015-06-03

Publish Date

2015-07-01

Page Start

543

Page End

552

Print ISSN

1110-6336

Online ISSN

2812-4936

Link

https://ejar.journals.ekb.eg/article_154793.html

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https://ejar.journals.ekb.eg/service?article_code=154793

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11

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Original Article

Type Code

1,041

Publication Type

Journal

Publication Title

Egyptian Journal of Agricultural Research

Publication Link

https://ejar.journals.ekb.eg/

MainTitle

THE EFFECT OF VITRIFICATION DEVICE AND EMBRYONIC STAGE ON SURVIVAL AND DEVELOPMENTAL COMPETENCE OF GABALI RABBIT EMBRYOS

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Article

Created At

22 Jan 2023