The effect of essential oils on quality and mineral composition of eggshell

Abstract

Received: 2016-07-18 | Accepted: 2016-10-26 | Available online: 2017-06-20
http://dx.doi.org/10.15414/afz.2017.20.01.36-40

The aim of study was to analyse the dietary effect of pumpkin and flaxseed oils on quality and mineral composition of laying hens eggshell.  At 38 weeks of age, Lohmann Brown Lite hens were housed in three-floor cages, divided into three dietary groups (C-control, E1-pumpkin oil (3 %), E2-flaxseed oil (3 %)). There were housed six hens in one cage. A total 18 hens were monitored. In the control group hens were fed with standard complete feed mixture for laying hens and in the experimental groups by feed mixtures with supplementation of pumpkin or flaxseed oils. Vitamin E was added into feed mixture in the experimental groups. The experiment lasted 52 days. Twelve eggs from each dietary treatment were randomly selected and analyzed. Significant (P < 0.05) differences between control and both experimental groups in eggshell strength and eggshell thickness were found. Pumpkin and flaxseed oil supplementations in feed ratio of layers had positive impact on quality of eggshell. As regards the mineral composition of eggshell, significantly (P ˂ 0.05) lower contents of magnesium, sodium, potassium and copper in experimental groups compared to the control were observed in eggshell. Significant (P ˂ 0.05) differences in content of calcium were detected only between E1 (pumpkin addition) and E2 (flaxseed addition).

Keywords: eggshell, feed mixture, flaxseed oil, minerals, pumpkin oil 

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