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.
2003
Volume 6
Issue 2
Topic:
Animal Husbandry
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Dobrzański Z. , Jamroz D. 2003. BIOAVAILABILITY OF SELENIUM AND ZINC SUPPLIED TO THE FEED FOR LAYING HENS IN ORGANIC AND INORGANIC FORM, EJPAU 6(2), #03.
Available Online: http://www.ejpau.media.pl/volume6/issue2/animal/abs-03.html

BIOAVAILABILITY OF SELENIUM AND ZINC SUPPLIED TO THE FEED FOR LAYING HENS IN ORGANIC AND INORGANIC FORM

Zbigniew Dobrzański, Dorota Jamroz

 

ABSTRACT



Standard DJ feed mixture for laying hens (ISA Brown) was supplemented with organic or inorganic forms of selenium and zinc. The organic forms consisted Saccharomyces cerevisiae yeast enriched with Se (Y-Se) and Zn (Y-Zn). The inorganic forms were sodium selenite (Na-Se) and zinc oxide (ZnO). The concentrations of elements in the experimental feed were (mg·kg-1): selenium 1.414 (Y-Se) and 1.393 (Na-Se); zinc 79.3 (Y-Zn) and 78.9 (ZnO). After 6 days of feeding treatment, for the next 5 days there were collected droppings and eggs to determine Se and Zn concentrations with the use of ICP method. It was stated that in hens availability of elements (as apparent absorption) was respectively (%): Y-Se 63.65, Y-Zn 38.5, Na-Se 61.12 and ZnO 35.41. In eggs content of Y-Se hens the increase of Se was proved if compared to Na-Se eggs (p<0.05).

Key words: hen, selenium, zinc, bioavailability..