الفهرس 
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Abstract
The present experiment was planned to study the effect of selection for high immune response to Newcastle Disease Virus (NDV) with detection of antibody titers of Avian Influenza Disease Virus (AIDV) vaccines, on disease resistance and its correlated response on productive and reproductive traits. Two lines (Selected and control) of Dokki-4 strain were used ; in the selected line, chicks were selected according to their immune response against Newcastle Disease Virus (NDV) vaccine at 42 days of age. In the control line, chicks were randomly chosen and were maintained without deliberate artificial selection (Table1). Two hundred hens and twenty cocks from Dokki-4 strains at 18 weeks of age were used. The birds were assigned randomly and kept on individual cages (10 pullets per 1 sire) to form 20 sire families. Age at sexual maturity was recorded. Body weight, feed consumption and feed conversion were recorded individually after sexual maturity every 28 days. Eggs were collected daily using individual cages till 56 weeks of age while, egg number and weight were recorded daily for each dam. The pedigreed eggs represented 20 sire families were incubated to give the individuals of the base generation. The population families were vaccinated against the common prevalent diseases according to vaccination programs in the Sakha Animal Production Research Station, Kafr El-Sheikh. Genetic selection for high antibody titers against NDV vaccine in Dokki-4 strain through two successive generations of selection, resulted in improving of immune response of the birds at different ages under investigation, livability percentages during the first 12 weeks of age, Disease resistances of the birds (survival rates post challenge), immune response to inactivated Avian Influenza Virus vaccine as a correlated trait to genetic selection for high antibody titers against NDV vaccine, body weights and feed conversion ratio during the first 12 weeks of age, percentages of fertility and hatchability, the average of egg production, where it increased average of egg number and egg mass and percentages of phagocytic activity, phagocytic index, serum total protein, albumen and globulin.