Postembryonic developmental changes in ovarian histology and associated 17β-oestradiol and progesterone profiles in guinea hens (Numida meleagris)

There is a paucity of information on the reproductive biology guinea hens. A study was conducted to document postembryonic developmental changes in ovarian histology and associated progesterone 17β-oestradiol profiles until 32 weeks age (WOA). Highly significant increases (p<0.001) were noticed oocyte follicular diameters beyond 16 WOA. Other morphometric traits showed inconsistent The first phase yolk deposition occurred between hatching 20 WOA, second 26 third final 27 28 Peripheral concentrations increased from WOA it peaked at while peripheral fluctuated considerably during sexual development. Both oestradiol negatively moderately correlated (p<0.01) with nuclei diameter, granulosa theca layer heights. However, positively strongly diameters, concentrations. Three phases depositions found hen, terminating much smaller diameter than domestic chicken. Oestradiol might play role this species.