الفهرس 
Essential fatty acidsOnly 14 pages are availabe for public view
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Abstract
The present study was carried out at a private poultry farm at ElSanta El-bald town – near Tanta - Gharbia Governorate, Egypt, under supervision of Animal Production Department, Tanta University during the period from 1 September to 30 November 2020. The chemical analysis was performed in Laboratory of Animal Production Department, Faculty of Agriculture, Tanta University. This study was carried out to investigate the effect of different levels and sources of vegetable oil as a source of omega -6 and omega -9 fatty acids on productive performance, egg quality, fatty acids profile and some physiological traits in laying hens.