TY - BOOK AU - El-Prollosy,Ali Abd El-Hady Saad Mohamed TI - Effect of photoperiod and the ratio between omega-3 and omega-6 fatty acids on productive and reproductive performance and immune response of Local laying hens PY - 2012/// KW - Hens KW - Immunology KW - Production KW - Omega-3 fatty acids KW - Omega-6 fatty acids KW - Immune response N1 - Thesis (Ph. D.) -- Alexandria University, 2012; Includes bibliographical references (leaves 96-111) UR - http://nile.enal.sci.eg/thesis/3551.pdf ER -