Quail in the control and H1 groups had significant greater fertility(p=0.021)and hatchability % (p=0.037),compared with H2 group.Quail in the control group(at low THI)laid heavier egg weigh twith a higher external(egg weight(p=0.03), shell thickness,shell weight,egg shell ratio and egg shell density (p=0.001))and internal egg quality score(albumin weight(p=0.026), yolk height(p=0.003),yolk index
(p=0.039) and Haugh unit(p=0.001)).