DOI: 10.36347/sjavs.2018.v05i09.003

Pages: 490-497

Abstract: The purpose of this study was to determine the effect of teak leaf extract (Tectona grandis Linn. f) as feed additive on egg quality of laying hens. The materials used were 240 Isa Brown laying hens aged at 30 weeks old with average egg mass was 53.13±3.26 g. The method used was experiment in a completely randomized design. The birds were divided into six dietary treatments with four replications (10 birds of each replication). The treatments used were basal diet without teak leaf extract as negative control (R0), basal diet with 0.015% of virginiamycin as positive control (R1), and basal diet with teak leaf extract at 0.4% (R2), 0.8% (R3), 1.2% (R4), and 1.6% (R5). Variables measured in this study were egg weight, albumen weight, yolk weight, eggshell weight, albumen percentage, yolk percentage, eggshell percentage, Haugh unit, shell thickness, and yolk color score. Data were analyzed by using analysis of variance, while the significance of differences among treatment means were evaluated by using Duncan Multiple Range Test. The results showed that the addition of teak leaf extract in the laying hens diets significantly affect (P<0.01) egg weight, albumen weight, eggshell weight, eggshell percentage, Haugh unit, shell thickness, and yolk color score. The inclusion of 1.2% teak leaf extract in the diet gives the best effect on the egg quality of laying hens.