A study of photoperiodic manipulation on the body weight, growth and development of ovarian follicles of Coturnix-coturnix

Atul Kumar Misra*
Department of Zoology, D.A.V. P.G. College, Kanpur (U.P.) INDIA
Received : 12^th May, 2015; Revised : 17^th July, 2015

Abstract : The live and mature specimens of Coturnix-coturnix (female) which is commonly known as (Grey-quail) were purchased from the local bird market in the month of October, 2012. These specimens were acclimatized in laboratory condition and treated in different photoperiodic schedule under observation of 75 days. It is experimentally concluded that birds grew faster and sexually mature early in 22hrsL/2hrsD and 18hrsL/4hrsD, but in short term of photoperiod i.e.; 4hrsL/20hrsD, growth and development of ovary were retarded. The body weight of the birds was also affected in different light regime. It increased in long term of light/dark schedule and decreased in short duration of light. The results clearly indicated that there were a direct relationship between photoperiod and body weight, growth and development of ovarian follicles. In the Natural Day Length (N.D.L.), there were no significant changes recorded.