In this study, the effects of seaweed soluble powder (maxicrop), used as growth promoter in plan ts on egg production, feed intake, feed efficiency and egg yolk color in hens were investigated.

Total 108 hen s aged 44 weeks were u sed and three groups were designed. During 12 weeks, the anima/s fed control feed, the feed containing 0.1 % and. 1 % seaweed powder. Later, all groups fed control ratian during 5 weeks.

In first period, average egg production in groups were 68.23, 74.45 and 62.05 %, respectively (p<0.05). Feed intake for 1 kg eggs was tower in the group fed% 0.1 seaweed powder.

lt was found, the seaweed powder affected positively to yolk color, but didn't to feed intake.

As a result, to increase egg yie!d, seaweed powder may use in poultry diets but it is needed additional researches about this area.