%0 Journal Article %T Effects of in ovo Injection of Olive Leaf Extracts on Broiler Performance %J Iranian Journal of animal Science %I پردیس کشاورزی و منابع طبیعی دانشگاه تهران %Z 2008-4773 %A keshavarz moatamedi, maryam %A mohammadi, mehrdad %A motaghi talab, majid %D 2009 %\ 02/19/2009 %V 39 %N 1 %P - %! Effects of in ovo Injection of Olive Leaf Extracts on Broiler Performance %K . %K Broiler performance %K In-Ovo injection %K Olive leaf extract %K " %R %X The effect of in ovo injection of olive leaf extract as a growth promoter antibiotic was studied on hatchability, day old chick weight, growth rate, feed conversion ratio, mortality and carcass efficiency. Three hundred and twenty eggs were divided into 4 groups, and injected on day 18. Treatments consisted of: 1- control (no injection). 2- injection of 1 ml of distilled water in air sac (DW), 3- injection of 1 ml olive leaf extract containing 0.75% of oleuropein (OL0.75) in the air sac. 4- Injection of 1 ml of olive leaf extract contain 0.9% of oleuropein (OL0.9) in air sac. No significant differences were observed in hatchability and in day old chick weight in eggs treated with olive leaf extract. OL0.9 treatment resulted in lowest mean live weight (P %U https://ijas.ut.ac.ir/article_20692_5927834610e44def7565eb03fd2d14ce.pdf