Title: RESEARCH UPON THE BIOCHEMICAL INDICATORS IN LAYING HENS, AT THE END OF THE PRODUCTION PERIOD, DEPENDING ON THE HOUSING CAGE SYSTEM
Abstract: The aim of this study is to compare biochemical indicators of blood plasma of laying hens housed in three different housing systems (conventional cage system, enriched cage system and deep litter system). In each housing system, 30 ISA Brown laying hens were observed during the laying period. Blood samples were collected, during week 74 (the last segment of the laying period), in order to determinate the biochemical indicators in plasma. There is a difference between the enzymatic activity in hens housed in cage system (even if that cage is enriched, according to the 1999/74/EC) and in hens housed in deep litter system. The enzymatic activity is more intense in hens housed in cages.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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