English Summary Experiment I. The environment under which quail are managed were carried out including the housing system from hatching till 12th week of age as the housing system influence the behaviour and performance of quail subsequently it’s productivity. In this experiment two different housing systems (Deep-litter and Battery system) were used for raising of Japanese quail to investigate behaviour and performance of quail in relation to rearing system. The obtained results of this experiment could be summarized as the following: 1- There was a significant difference (P  0.05) on feeding time feeding frequency, drinking frequency, standing time and frequency, running frequency and preening frequency between deep-litter and battery brooding, they were clearly increased with battery brooding than deep-litter brooding, it was clear that brooding system had no significant (P  0.05) influence on walking time and frequency. There was highly significant difference (P  0.05) in crouching time &frequency and other comfort behaviour between deep-litter and battery brooding, as they were clearly increased with deep-litter brooding. 2- The feeding time, feeding frequency and drinking frequency were higher in cage reared quail than those counter by that reared at floor system at broiler period and the difference was significant (P  0.05). 3- The average number of quail chicks engaged in standing, walking (time and frequency) and running frequency were higher in floor-rearing than cage-rearing at broiler period and the difference was significant at most growing period. 4- The crouching and preening behaviour were differed between system of management at broiler period while dust bathing behaviour completely absent in wire cages and the difference was significant (P  0.05). 5- There was no significance variation in feed intake between deep-litter and battery housing except at 3rd week of age ,as it was increased in battery rearing (12.00  1.04 vs 19.35  0.97 gm) respectively at broiler period. 6- Quail body weight was improved in deep-litter rearing than battery rearing at broiler period but not significantly differ at brooding period. 7- Quail sexual behaviour was stimulated with deep-litter rearing than battery rearing and the difference was highly significant ,as quail need comfort zone for mating behaviour. 8- The feeding time and frequency of quail were increased with battery rearing than deep-litter rearing while there were no significance variations in drinking frequency between battery and deep-litter rearing at the laying period. 9- The quail standing (time &frequency) and kinetic behaviour (moving and running) didn’t differ between system of management during laying period. 10- There was a significant difference for quail crouching time and frequency between deep-litter and battery rearing at laying period, although there were a highly significance difference for quail preening frequency, these increased in battery rearing. As well as, the dust bathing behaviour completely was absent at battery housing. 11- Feed consumption was positively correlation to the onset of egg production. 12- There was a highly significant effect for housing system on quail body weight at laying period as it increased in deep-litter rearing due to the egg production made their weight increase with aids of hormone of egg laying. 13- The egg production was occurred in deep-litter housing and reach maximum at 9th and 10 th week of age (50% and 52%) and decline there after, and egg weight reachs maximum at 8 th week (12.16  1.10g) of age and declines with advanced age. 14- There was a highly significant difference in quail mortality percentage between floor and cage-rearing, as quail housed in cages had higher mortality percent than those in deep-litter either at broiler (28.57 vs 14.28%) or laying period (50.00 vs 2.08%)respectively . 15- Quail plasma cortisol level was increased with cage–rearing at broiler period while highly increased with battery housing than deep-litter housing at laying period (0.20  1.52 vs 0.95  1.50ug/dl) due to physiological stress caused by cage frustration. Experiment II : 1- The average flight behaviour was increased with cage rearing than floor rearing but was not statistically significant at broiler period but nearly absent at brooding period. They also increased with laying behaviour and egg production. 2- There was a significant differences in non aggressive pecking behaviour between battery and deep-litter rearing, it increased in battery housing also with advanced age. 3- Aggressive pecking behaviour and feather loss were increased with battery than deep-litter rearing at laying period. In contrast, with brooding and broiler period, it increased with floor-rearing, also was increased with advanced age. 4- The leg broken, was the main problems occurred in cage rearing system. 5- There was a significant variation recorded in feed wastage between two system except at 4th , 6th week which show non significant differences in food wastage. Although, the floor-reared quail waste food more than caged quail at broiler period. 6- There was a highly significant difference P  (0.05) of feed wastage between floor and caged reared quail at laying period, as the wastage was high in cage-rearing as occurred by quail long beak. 7- Battery housing and physical environment have a market effects on the physiology, behaviour and egg laying performance and the nature of social interactions among quail, these inhibit the laying behaviour of quail hens. 8- Modified cage with cover improve the maintenance behaviour decrease behavioural disorders and improve the physical performance (feed intake and body weight). 9- Modified cage with dust both improve improve the maintenance behaviour, decrease behavioural disorders and improve the physical performance (feed intake and body weight). 10- Constructed feeder improve ingestive behaviour comparing with control group while there was non significant difference in other maintenance behaviour between normal floor and constructed feeder group. As well as, constructed feeder decrease aggression and feed wastage. 11- The grill over the feeder make stress for quail as decrease feed intake subsequently decrease the body weight. Experiment III: 1- The hatchability of eggs was increased when the quail eggs exposed to blue light colour during incubation (49.23% vs 17.44%) in contrast to dark incubation. 2- The production of healthier chick with large body weight was achieved incase of blue and white light colour incubation. 3- There was non significance difference in body weight almost the growing period among all quail chicks which were hatched from different light colours during the incubation, although the body weight of white light colour incubated group had heavier chicks during the almost growing period (w1:w6) of age. 4- The first onset of sexual maturity was for hens exposed to red light during incubation (50th day of age vs 60th of age) compared with yellow and green light incubations. 5- There was a positive correlation coefficient between testosterone level and complete mating except green light colour incubated group, while there was a negative correlation coefficient between testosterone level and incomplete mating at dark &blue light colour incubated groups. There was a negative correlation coefficient between testosterone level and body weigh at white light colour incubated group. 6- There was a positive correlation coefficient between estrogen level and complete mating, body weight, egg number and egg weight while there was negative correlation coefficient between estrogen level and incomplete mating in dark incubation, while the reverse at other light colour incubated groups.