Title
Effect of storage duration and temperature on daily changes in external and internal egg quality of eggs from dekalb white® laying hens
Other title
[Einfluss der lagerungsdauer und-temperatur auf tägliche veränderungen der äußeren und inneren eiqualität von eiern von dekalb white® legehennen]
Date Issued
01 January 2021
Access level
metadata only access
Resource Type
journal article
Author(s)
Soliz N.D.
Bejarano M.A.
Paz P.
Valdivie M.
Zamorano University
Publisher(s)
Verlag Eugen Ulmer
Abstract
A total of 330 eggs from Dekalb® White laying hens at full laying peak were collected the same day and randomly distributed into 165 eggs stored at room temperature (26.50°C ± 5.48) and 165 eggs at a controlled temperature (7.8°C ± 0.01) over 10 days. The daily changes in external and internal egg quality were determined using automatic equipment. Egg weight loss (EWL), albumen height (AH), and Haugh unit (HU) decreased (P = 0.001) in the eggs stored at room temperature during the experiment, where the ninth day was the limit for human consumption. Also, the yolk colour (YC) decreased (P = 0.001) from the sixth to tenth day. Even though significant changes were found at the controlled temperature (P = 0.001 for EWL, AH, HU and P = 0.045 for breaking strength), HU indicated that eggs were suitable for consumption. Likewise, a significant correlation was found for the measured indicators, emphasising AH and HU (P < 0.01), and linear regression with R2 0.95 and 0.96 for room and controlled temperature, respectively. All indicators had a significant interaction (P = 0.001 and P = 0.004 for YC) considering the storage duration and temperature, except egg weight (P = 0.573) and breaking strength (P = 0.081). The results indicate that temperature-controlled egg storage maintains egg freshness for up to 10 days on the shelf. But, egg quality is reduced daily at room temperature stored eggs, mainly EWL, AH, and HU. Furthermore, storage duration and temperature significantly influenced the external and internal egg quality. Moreover, AH and HU have a high degree of association and statistical dependence under both storage methods.
Volume
85
Language
English
OCDE Knowledge area
Ciencia animal, Ciencia de productos lácteos Ciencia veterinaria
Scopus EID
2-s2.0-85103875948
Source
European Poultry Science
ISSN of the container
16129199
Sources of information: Directorio de Producción Científica Scopus