A master's thesis in the Department of Animal Production at the College of Agriculture at the University of Basrah discussed the effect of injecting broiler mothers' eggs with alcoholic extract of garlic on hatchability, growth and physiological performance criteria for hatched birds. The thesis of student Nermin Thamer Muhajer, under the supervision of Prof. Dr. Khaled Jallab Kreidi Al-Salihi, included the use of alcoholic extract of garlic at a level of 50, 100 and 150 microliters/egg in injecting the eggs of broiler mothers and their impact on hatching standards, growth and physiological performance of hatched birds. The thesis aimed to study the effect of injecting broiler mothers’ eggs with alcoholic extract of garlic on hatching criteria represented by hatchability, dead embryos, and hatched chicks’ weight, and studying the effect of the injected extract on the productive and physiological performance of hatched chicks up to the age of 28 days after hatching. The thesis concluded that the use of garlic alcoholic extract at a level of 150 microliters/egg in injecting the eggs of broiler mothers led to an improvement in hatching traits represented by high hatchability and a decrease in the proportion of dead embryos. The productive performance of birds represented by high rates of live weight and weight gain, improvement of feed conversion efficiency, and improvement of the physiological and immune status of hatched birds.