Two hundred forty Leghorn pullets were used in a 168-day 5X2 factorial arrangement to study the effects of 0, 10, 20, 30 or 40% coconut meal and 0 to 10% coconut oil to layer diet on rate of production, efficiency, body weight, egg weight, egg fat level and fatty acid composition of egg fat. With 0% added oil, coconut meal increased rate of egg production, with this rate reaching a peak when 20% meal was added. Coconut oil also increased rate of production and efficiency. Within each oil level group, feed efficiency was directly related to production rate. Birds receiving oil gained 136 gms. per bird while those fed no oil lost 79 gms. Within each oil level group, weight gain was inversely related to the level of coconut meal fed. Egg weight was depressed by feeding coconut meal and increased by coconut oil. Fat content of the egg was not significantly altered by treatment but adding oil increased the level of lauric (C12:0) and myristic (C14:0) acids and decreased the level of stearic (Cl8:0), oleic (C18:l) and linoleic (Cl8:2) acids in the fat.

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