S83 Egg Shell Colour in Free Range Laying Hens
نویسندگان
چکیده
Loss of shell colour in brown-egg layers is a shell quality issue in Australia and is periodically associated with free range egg production. This study investigated the loss of shell colour that occurs in some flocks of free range laying hens. Hens laying pale-coloured egg shells on a commercial free range farm were transferred to cages in an experimental facility. Egg quality was measured immediately following transfer to cages and then up to five weeks following transfer. Shell colour was measured by shell reflectivity, protoporphyrin IX levels and staining of the cuticle with MST cuticle blue dye. Shell colour was restored quickly with most of the improvement occurring within the first week following relocation into cages.
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تاریخ انتشار 2014