17 Y. Abbas A. W. Sahota M. Akram S. Mehmood J. Hussain M. Younus M. M. Awais A. R. Sial Journal of Animal and Plant Sciences JAPS 20152015/08/01 25 4 966-970 1018-7081 NA <p>The present study was executed to examine the growth performance and economic efficiency of Japanese quail (<em>Coturnix coturnix japonica</em>) at Avian Research and Training (ART) Centre, UVAS, Lahore. For this purpose a total of 3200 quail chicks were allocated to four different feed restriction regimes comprising four close-bred stocks (Imported, Local-1, Local -2 and Local-3) at the age of 10 days. The experimental quails in group 1 were fed&nbsp;<em>ad-libitum&nbsp;</em>(20.30% CP, 1.3% Lysine) diet throughout the experimental period to serve as control while groups 2, 3 and 4 were provided with 1 hour feed- 3-hour off, 2-hour feed- 2hour off and 3-hour feed-1hour off feeding regimes, respectively. Weekly data on growth parameters were recorded. Maximum feed intake was observed in&nbsp;<em>ad-libitum</em>&nbsp;fed group whereas the highest body weight gain was observed in&nbsp;<em>ad-libitum</em> and 3 hour fed quails. The best FCR leading to maximum profit margin was observed in 3 hour-fed group. However, different close-bred stocks could not express any significant difference in growth parameters.</p> Feed restriction regimes, Growth performance, Economic efficiency, Japanese quails Pakistan Agricultural Scientists Forum https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-128