The objective of this work was to evaluate the effect of housing system and sex ratio of quails on eggproduction, fertility and hatchability. A total number of 305 quails of five weeks old were divided intotwo groups, The first group (96 birds) was housed on battery cages and divided according to sex ratiointo 2 equal subgroups of ratio (1: 2) male to females and 1: 3, the second one (209 birds) was housedon floor pens and divided according to sex ratio into 2 equal subgroups of ratio (1: 2) male to femalesand 1: 3. Eggs were collected daily for one month to estimate egg production percentage of each group.200 eggs from each group were artificially incubated for detection the effect of housing on fertility,hatchability and embryonic mortality. The obtained results showed that the total egg productionpercentage was significantly higher (P<0.001) in case of battery cages (63.54±1.68%) than those in floorsystem (46.67±1.68%), it was higher but not significant at sex ratio 1:3 (57.01±1.68%) than those at 1:2(53.21±1.68%). The fertility percentage was significantly higher (P<0.001) in case of floor pens(80.67±0.75%) than those in battery cages (73.67±0.75%) and significantly higher (P<0.01) at sex ratio1:2 (79.17±0.75%) than those at 1:3 (75.17±0.75%). The hatchability percentage of total eggs set washigher but not significant in floor pens (52.00±1.89%) than those in battery cages (49.50±1.89%), it washigher but not significant at sex ratio 1:3 (52.00±1.89%) than those at 1:2 (49.50±1.89%). Thehatchability percentage of fertile eggs set was significantly higher (P<0.001) in battery cages(70.40±0.90%) than those in floor pens (64.45±0.90%) and significantly higher (P<0.001) at sex ratio1:3 (70.12±0.90%) than those at 1:2 (64.75±0.90%).
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M.M. et al. (2015) studied this question.