The live and mature specimens of Coturnixcoturnix (female) which is commonly known as (Grey-quail) were purchased from the local bird market in the month of October, 2013. These specimens were acclimatized in laboratory condition and treatedin different photoperiodic schedule under observation of 90 days. It is experimentally concluded that birds grew faster and sexually mature early in 21hrsL/3hrsD and 19hrsL/5hrsD, but in short term of photoperiod i.e.; 5hrsL/19hrsD, growth and development of ovary were retarded. The body weight of the birds was also affected in different photoperiodic light regime. It increased in long term of light/dark schedule and decreased in short duration of photoperiod. The results clearly indicated that there were a direct relationship between Light/Dark schedule and body weight, growthand development of ovarian follicles. In the Natural Day Length (N.D.L.), there were no significant changes recorded during experimental period.
Coturnix-coturnix, Ovarian follicles, photoperiodic schedule, light regimes, Natural Day Length (N.D.L.)
