Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/81688
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Type: Journal article
Title: Egg quality and age of laying hens: Implications for product safety
Author: Roberts, J.
Chousalkar, K.
Samiullah, S.
Citation: Animal Production Science, 2013; 53(12):1291-1297
Publisher: C S I R O Publishing
Issue Date: 2013
ISSN: 1836-0939
1836-5787
Statement of
Responsibility: 
J. R. Roberts, Kapil Chousalkar and Samiullah
Abstract: Eggs were collected from commercial caged layer flocks in early, mid, late and very late lay. Eggs were candled and scored for translucency. Cuticle cover was estimated using MST Cuticle Stain and a Konica Minolta hand-held spectrophotometer. Traditional measures of egg quality were determined using specialised equipment. Shell ultrastructural features were scored following plasma ashing of shell samples and viewing under a benchtop scanning electron microscope. Translucency score was significantly higher in late lay than for all other age groups. Shell quality declined with increasing flock age. However, the extent of cuticle cover on the egg shell was not significantly different among flock age groups. The incidence of shell ultrastructural features associated with good quality shells was lower for older flocks and incidence of ultrastructural features associated with poorer quality shells was higher for older flocks. Translucency score had a low correlation with the ultrastructural features of the mammillary layer.
Keywords: cuticle; food safety; shell quality; translucency
Rights: Copyright status unknown
RMID: 0020133008
DOI: 10.1071/AN12345
Appears in Collections:Animal and Veterinary Sciences publications

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