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J Anim Physiol Anim Nutr (Berl). 2018 Aug;102(4):1020-1025. doi: 10.1111/jpn.12907. Epub 2018 Apr 14.

The antimicrobial activity of lavender essential oil (Lavandula angustifolia) and its influence on the production performance of broiler chickens.

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Department of Poultry and Ornamental Birds Breeding, West Pomeranian University of Technology Szczecin, Szczecin, Poland.


The aim of the study was the evaluation of the antimicrobial activity (in vitro) of lavender (Lavandula angustifolia) essential oil (LEO) and the effect of its addition to the drinking water of broiler chickens on their production performance. Antimicrobial activity was determined by establishing the minimum inhibitory concentration (MIC) using a series of microdilutions. Bird experiments were carried out on a commercial farm on 300 Ross 308 broilers. One-day-old chicks were randomly assigned to three experimental groups of 100 individuals (five replications of 20 individuals each). In the control group, chickens received drinking water without added essential oil throughout the rearing period. In the LEO0.2 and LEO0.4 groups, from 1 to 42 days of bird life, the LEO0.2 group had 0.2 ml/L of essential lavender oil added to the drinking water, while LEO0.4 had 0.4 ml/L added. The results of the experiment showed the antimicrobial activity of LEO and its positive effect on the production results of broiler chickens. Application of higher concentration of essential oil (0.4 ml/L) significantly affected production results (BW, FCR, WCR-p < .01). No differences were observed in FI, WI, F:W and mortality (p > .05). In vitro studies indicate a significant effect of LEO on the inhibition of microbial growth. These results encourage further studies on a larger scale that will confirm antimicrobial efficiency and define the mechanisms of action of Lavandula angustifolia essential oil and its individual components.


broiler chicken; essential oils; lavender (Lavandula angustifolia)

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