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Agriculturae Conspectus Scientificus, Vol. 83 No. 4, 2018.

Preliminary communication

The Influence of Two Housing Systems on the Physical and Mechanical Properties of ISA Brown Hen Eggs

Ante Galić orcid id orcid.org/ORCID ; University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Dubravko Filipović orcid id orcid.org/ORCID ; University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Igor Kovačev orcid id orcid.org/ORCID ; University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Zlatko Janječić orcid id orcid.org/ORCID ; University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Dalibor Bedeković orcid id orcid.org/ORCID ; University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Stjepan Pliestić orcid id orcid.org/ORCID ; University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
Krešimir Čopec orcid id orcid.org/ORCID ; University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia

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Abstract

The aim of this study was to compare various physical and mechanical characteristics of eggs laid by ISA Brown hens kept in two different housing systems: aviary housing and free-range system. Aviary housed laying hens laid eggs of statistically significantly higher (Pyolk to albumen ratio (26.80% and 0.446) than eggs from aviary system (24.89 and 0.399). In comparison to eggs from free range system, eggs from aviary housing had higher shell strength and required greater force to rupture egg. The average force required to rupture eggs from aviary housing and free-range system in all three axes was 38.11 N and 36.28 N, respectively.

Keywords

egg composition; dimensions; weight; shape index; rupture force

Hrčak ID:

207936

URI

https://hrcak.srce.hr/207936

Publication date:

9.11.2018.

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