Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Dobrzański Z. , Opaliński S. , Górecka H. , Korczyński M. , Kołacz R. , Trziszka T. 2008. BIOAVAILABILITY OF Fe, Cu and Mn FROM YEAST ENRICHED IN BIOELEMENTS USED IN LAYING HENS FEEDING, EJPAU 11(2), #12.
Available Online: http://www.ejpau.media.pl/volume11/issue2/abs-12.html

ABSTRACT

Standard feed mixture for laying hens was supplemented with dried yeast Saccharomyces cerevisiae enriched in Cu (Y_Cu), Fe (Y_Fe) and Mn (Y_Mn). The availability of investigated organic forms, comparing to inorganic forms (CuSO₄, FeSO₄, and MnO₂), was assessed by analysis of these elements content in diet, droppings and eggs. Following values of apparent absorption were observed: control group 24.04, 29.89 and 20.35 %; Y_Cu group 27.14, 30.0 and 21.9 %; Y_Fe group 27.28, 32.43 and 19.44 %; Y_Mn group 26.01; 24.89 and 31.55 %; Y_Cu+Fe+Mn group: 24.78, 30.84 and 24.65 %; for Cu, Fe and Mn respectively. It was found, that yeast supplementation caused a significant (p<0.05) increase in copper availability (groups receiving Y_Cu and Y_Fe) as well as in manganese availability (groups receiving Y_Mn and Y_Cu+Fe+Mn). The differences in iron availability were not statistically confirmed.

Key words: yeast, copper, iron, manganese, laying hens, bioavailability.

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Zbigniew Dobrzański
Department of Environment Hygiene and Animal Welfare, The Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Poland
J. Chełmońskiego 38 C
51-630 Wrocław
Poland
Phone: +48 71 320 5865
email: zbigniew.dobrzanski@up.wroc.pl

Sebastian Opaliński
Department of Environmental Hygiene and Animal Welfare,
Wrocław University of Environmental and Life Sciences, Poland
Chełmońskiego 38 C, 51-630 Wrocław, Poland
Phone: (+48 71) 32 05 865

Helena Górecka
Institute of Inorganic Technology and Mineral Fertilizers,
Wrocław University of Technology, Poland
Smoluchowskiego 25, 50-372 Wrocław, Poland
Phone: (+48 71) 32-02-486
email: helena.gorecka@pwr.wroc.pl

Mariusz Korczyński
Department of Environmental Hygiene and Animal Welfare,
Wrocław University of Environmental and Life Sciences, Poland
Chełmońskiego 38 C, 51-630 Wroclaw, Poland
Phone (+48 71) 32 05 865,

Roman Kołacz
Department of Environmental Hygiene and Animal Welfare,
Wrocław University of Environmental and Life Sciences, Poland
Chełmońskiego 38 C, 51-630 Wrocław, Poland
Phone: (+48 71) 32 05 865

Tadeusz Trziszka
Department of Animal Products Technology and Quality Management,
Wrocław University of Environmental and Life Sciences, Poland
C.K. Norwida 25, 51-630 Wrocław, Poland
Phone: (+48 71) 32 05 121
email: trziszka@ozi.ar.wroc.pl

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Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.

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