Youssef, Ahmed Mohammed Mohammed Dief. <br/><br/>
Effect of ultraviolet exposure on productive, reproductive, physiological performance  and immune response of laying Hens  [electronic resource] / 
 تأثير التعرض للأشعة فوق البنفسجية على الاداء الإنتاجي و التناسلي و الفسيولوجي و الاستجابة المناعية فى الدجاج البياض 
Ahmed Mohammed Mohammed Dief Youssef 
 - 2021. 
<br/><br/>Thesis (Ph.D.) -- Ain Shams University, 2021. 
<br/><br/>Includes bibliographical references (Leaves 80-97) 
<br/><br/><br/>Systems requirements : Adobe Reader 
<br/><br/><br/>Summary in Arabic 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hens--Physiology.<br/>Ultraviolet lamps.<br/>Ultraviolet radiation--Physiological effect.<br/>Hens--Immunology<br/>Hens--Effect of ultraviolet radiation on.<br/>Eggs--Quality.