External egg quality is an essential parameter of egg production as it relates directly to economic losses. This study evaluated the spatial variability of external egg quality in five naturally ventilated caged vertical aviaries. Differences caused by bird age and thermal and luminous variability within aviaries during winter and summer were analyzed. Data on aviary air temperature, relative humidity, light intensity, and external egg quality were collected at evenly distributed points along the aviary length within three levels of cages. The experimental design was completely randomized in a factorial scheme. In the summer, the highest air temperature and lowest relative humidity were found in central cages, mainly in upper center cages; hens produced eggs with a lower weight and shape index in this area. Similar results were obtained in the winter. In the summer, eggs with lower shell weight and thickness were also produced by hens housed in the central cages, but in the winter, the opposite result was obtained. This study of the spatial variability of external egg quality proved efficient in detecting areas within an aviary with poor quality eggs; improvements to design and management in these areas could help management improve production efficiency and contribute to a sustainable egg supply.

Spatial Variability of External Egg Quality in Vertical Naturally Ventilated Caged Aviaries / Freitas, Letícia Cibele da Silva Ramos; Tinôco, Ilda de Fátima Ferreira; Gates, Richard Stephen; dos Santos, Tatiany Carvalho; Andrade, Rafaella Resende; Barbari, Matteo; Bambi, Gianluca. - In: ANIMALS. - ISSN 2076-2615. - ELETTRONICO. - 13:(2023), pp. 750.1-750.17. [10.3390/ani13040750]

Spatial Variability of External Egg Quality in Vertical Naturally Ventilated Caged Aviaries

Andrade, Rafaella Resende;Barbari, Matteo;Bambi, Gianluca
2023

Abstract

External egg quality is an essential parameter of egg production as it relates directly to economic losses. This study evaluated the spatial variability of external egg quality in five naturally ventilated caged vertical aviaries. Differences caused by bird age and thermal and luminous variability within aviaries during winter and summer were analyzed. Data on aviary air temperature, relative humidity, light intensity, and external egg quality were collected at evenly distributed points along the aviary length within three levels of cages. The experimental design was completely randomized in a factorial scheme. In the summer, the highest air temperature and lowest relative humidity were found in central cages, mainly in upper center cages; hens produced eggs with a lower weight and shape index in this area. Similar results were obtained in the winter. In the summer, eggs with lower shell weight and thickness were also produced by hens housed in the central cages, but in the winter, the opposite result was obtained. This study of the spatial variability of external egg quality proved efficient in detecting areas within an aviary with poor quality eggs; improvements to design and management in these areas could help management improve production efficiency and contribute to a sustainable egg supply.
2023
13
1
17
Goal 12: Responsible consumption and production
Freitas, Letícia Cibele da Silva Ramos; Tinôco, Ilda de Fátima Ferreira; Gates, Richard Stephen; dos Santos, Tatiany Carvalho; Andrade, Rafaella Resende; Barbari, Matteo; Bambi, Gianluca
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1299821
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