Document Type : Research Paper

Authors

1 Department of Animal and Poultry Sciences, College of Aburaihan, University of Tehran, Tehran

2 Animal Sciences Research Institute, Karaj, Iran

3 Department of Animal and Poultry Sciences, College of Aburaihan, University of Tehran, Tehran, Iran.

Abstract

This experiment was conducted to evaluate the effects of different levels of licorice essential oil on growth performance, meat quality and oxidative stability of meat by using 625 d-old Aryan broiler chicks in a completely randomized design with 5 treatments, 5 replicates and 25 birds per each. Dietary treatments included a control group which received no additive (basal diet) and two graded levels of licorice essential oil (100 and 200 mg/Kg) added to the control basal diet, and a basal diet including an antibiotic (Avilamycin, 150 mg/kg feed). Dietary treatments were iso-caloric and iso- nitrogenous. The results showed that the birds fed on diets containing 200 mg kg licorice essential oil had more daily gain, feed intake and feed conversion ratio compared to other treatments (P<0.05). The highest and lowest of concentration of malondialdehyde (MDA) after 150 min incubation for inducing oxidation, were belonged to the birds fed diets containing 400 mg/Kg licorice essential oil and control diet, respectively (P<0.05). Dietary treatment had no effects on water holding capacity (WHC) of thigh meat. In conclusion, dietary supplementation with 200 mg/Kg of licorice essential oil improves growth performance and increase oxidative stability of meat in broiler chicks.

Keywords

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