Research Article Open Access

New Biological Dietary Feed Supplement for Laying Hens with Microelements Based on Duckweed (Lemna minor)

Zuzanna Witkowska1, Agnieszka Saeid1, Katarzyna Chojnacka1, Zbigniew Dobrzanski2, Henryk Gorecki1, Izabela Michalak1, Mariusz Korczynski2 and Sebastian Opalinski2
  • 1 Wrocław University of Technology, Poland
  • 2 Wrocław University of Environmental and Life Sciences, Poland


In this study the applicability of enriched duckweed (Lemna minor) as a dietary supplement witch microelements is reported. In our previous studies, the technology of new feed additives with microelements based on duckweed biomass was elaborated. Here, we report the evaluation of the properties of a new product. The effect of duckweed enriched with microelements on the productivity parameters of laying hens was studied in zootechnical research. Birds feed was supplemented with duckweed enriched by biosorption process with microelements (Cu(II), Zn(II), Co(II), Cr(III)). In the feeding experiment, laying hens were divided into four experimental groups and one control group. The feeding experiment was conducted for 41 days. Samples of egg yolk, albumen, eggshells, blood, feathers and droppings were collected and the content of metal ions was determined by Inductively Coupled Plasma-Optical Emission Spectrometer with ultrasonic nebulizer. The amount of a given microelement transferred into the egg yolk and egg white was calculated. The eggshells thicknesses were measured with micrometer screw. The research showed that enriched Lemna minor improved the egg quality parameters. In all experimental groups, the increase of eggshell thickness was observed. In three of four experimental groups of hens, fed with diet containing biological form of microelements (Co(II), Zn(II), Cr(III)), the quantity of given microelement in the egg content increased. Therefore, the biosorption process can be applied not only for the supplementation of microelements in hens feed, but also to produce eggs biofortified with microelements-new functional food for human.

American Journal of Agricultural and Biological Sciences
Volume 7 No. 4, 2012, 482-493


Submitted On: 29 November 2012 Published On: 31 January 2013

How to Cite: Witkowska, Z., Saeid, A., Chojnacka, K., Dobrzanski, Z., Gorecki, H., Michalak, I., Korczynski, M. & Opalinski, S. (2012). New Biological Dietary Feed Supplement for Laying Hens with Microelements Based on Duckweed (Lemna minor). American Journal of Agricultural and Biological Sciences, 7(4), 482-493.

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  • Lemna Minor
  • Laying Hens
  • Biosorption
  • Feed Additives
  • Functional Food