Prenatal ovarian development in local sheep of Kashmir Valley

MIR SHABIR  AHMAD; MASSARAT  KHAN; S A  SHAH; A R  COUDHURY; Z A  PAMPORI; S H  DAR

doi:10.56093/ijans.v95i11.169783

Authors

MIR SHABIR AHMAD Sher-e-Kashmir University of Agricultural Sciences and Technology, Srinagar-190 006 (J&K) India
MASSARAT KHAN Sher-e-Kashmir University of Agricultural Sciences and Technology, Srinagar-190 006 (J&K) India
S A SHAH Sher-e-Kashmir University of Agricultural Sciences and Technology, Srinagar-190 006 (J&K) India
A R COUDHURY Sher-e-Kashmir University of Agricultural Sciences and Technology, Srinagar-190 006 (J&K) India
Z A PAMPORI Sher-e-Kashmir University of Agricultural Sciences and Technology, Srinagar-190 006 (J&K) India
S H DAR Sher-e-Kashmir University of Agricultural Sciences and Technology, Srinagar-190 006 (J&K) India

https://doi.org/10.56093/ijans.v95i11.169783

Keywords:

Age, Development, Sheep, Morphology, Pre-natal ovary

Abstract

Morphological, histological and histochemical studies were conducted on prenatal ovary at different stages of gestation of local sheep of Kashmir. The genital ridge was observed as a minor thickening on the ventro-medial aspect of mesonephros which contained mesenchymal cells, primordial germ cells (PGCs), differentiating erythrocytes and spindle shaped fibroblasts upto 50 days of gestational age. Later on small, elongated to almond shaped ovaries caudal to respective kidneys were observed. The ovaries were covered by germinal epithelium. The sex cords were observed along with primordial and primary follicles in 50-100 days of prenatal life. Secondary follicles were first observed from 100 days of prenatal ovary onwards. Tertiary follicles were first observed at the inner part of the cortex near the full term (140-149 days). Development of the tunica albuginea was initiated from 100 days of gestation onward. Regarding connective tissue fibres, reticular fibres were evident from 50 days onward and collagen fibres appeared from 100 days onward of the gestation period.

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