Prenatal developmental study of the ovaries of the Baladi rabbits (oryctolagus cuniculus)

Year 2020, Volume: 5 Issue: 1, 13 - 19, 30.04.2020

Reda Mohamed

https://doi.org/10.31797/vetbio.647563

Abstract

 This study was carried out
to find out the histological changes of the ovaries of the Baladi rabbits at
different prenatal periods. A hundred Baladi rabbit embryos and fetuses were
used in this study. The pregnant rabbits were euthanized, dissected and,
subsequently, the embryos and fetuses were collected. The samples were fixed
with modified Davidson's fixative and 10% neutral buffered formalin for 24 to
48 hours and then subjected to routine paraffin embedding technique. They
sections were stained by hematoxylin-eosin, Crossman’s trichrome and Gomori's reticulin stains. Stained sections were
examined by light microscope. The study revealed that the ovarian
differentiation with the appearance of its cortex and medulla occurred at the
19^th day postconception. The oogonial nests were observed within the
ovarian cortex at the 24^th day of fetal rabbit life. The primitive
tunica albuginea ovarii could be recognized at the 28^th day
postconception. No primordial follicle occurred
throughout the fetal rabbit life.

Keywords

Prenatal, ovaries, rabbits

References

• Prof. Zein Adam: Professor of Anatomy and Embryology
• Prof. Khaled Mazher: Professor of Cytology and Histology
• Dr. Ashraf Awaad: Assistsnt professor of Anatomy and Embryology