One hundred and eighty 31-week-old Commercial White Leghorn crossed pullets were used in a randomised block experiment. The trial was divided into 2 phases. During the first phase (31st to 42nd week), 5 experimental isonitrogenous diets with 0%, I5%, 30%, 45% and 60% tapioca replacing maize were fed to the respective groups. In the second phase (43rd to 74th week). the latter 4 tapioca diets were supplemented with 0.2% methionine which made up the total methionine level to 0.% in the diets. Results from the first phase showed that in spite of equal crude protein content egg production decreased with the increase of tapioca level in the diets (P <0.01). Egg weight.feed conversion efficiency and total egg mass produced was lower in the tapioca treated groups. This situation was remedied by the methionine supplementation in the second phase. There was no significant differences in the above parameters in all the treatments. The better results obtained in the second phase might be due to detoxication effect of this sulphur amino acid on hydrocyanide content in the tapioca meal. No difference in mortality was observed. Paleness in egg yolk caused by the substitution of tapioca with maize can be remedied by supplementing commercial carotenoid pigments in the tapioca diets. 

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