Influence of the age of the bird and storage time on the properties of the japanese quail egg
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| Autores: | , , |
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| 格式: | artículo original |
| 狀態: | Versión publicada |
| Fecha de Publicación: | 2025 |
| 實物特徵: | The study's objective was to evaluate the effect of storage conditions and the bird's age on the physicochemical, nutritional, and microbiological characteristics of Japanese quail (Coturnix coturnix japonica) eggs produced in Atenas, Costa Rica. Eggs from one-, four-, and six-month-old birds were stored for 28 days at 5, 20, and 30 °C. Physicochemical variables were analyzed, such as egg weight, morphological index, apparent shell porosity, air chamber height, internal quality unit (UQI), yolk color, yolk index, yolk weight, shell thickness, pH of the yolk, and albumen pH; nutritional variables such as moisture, crude protein, ether extract, and ash percentage; and microbiological variables such as the bacterial count of the total coliforms, E. coli and Salmonella spp. Egg weight decreased significantly at 30 °C as the storage days passed. The morphological index and shell thickness were not affected by storage but rather by the bird's age. The height of the air chamber increased to 30 ºC. The UQI, index, and yolk weight were affected by the environmental temperatures of 20 ºC and 30 ºC. The pH values of yolk and albumen increased on the third day of the study and then remained constant. Yolk color was not affected by storage or age. Nutritional quality was affected, in terms of dry matter, by water evaporation during the study. Throughout the investigation, egg microbiology remained ideal. Overall egg quality was affected by storage time and temperature conditions, decreasing over time. |
| País: | Portal de Revistas UCR |
| 機構: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| 語言: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/63731 |
| 在線閱讀: | https://revistas.ucr.ac.cr/index.php/nutrianimal/article/view/63731 |
| Palabra clave: | Codorniz calidad de huevo temperatura ambiental humedad relativa tiempo de almacenamiento edad Quail egg quality environmental temperature relative humidity storage time age |