INTERNAL AND EXTERNAL QUALITY OF COMMERCIAL LAYING HENS EGGS WITH NORMAL AND VITREOUS EGGSHELL
The objective of this study was to evaluate the internal and external quality of eggs classified as eggs with normal eggshell and eggs with vitreous eggshell, produced by hens at three different ages. Forty-five eggs of each eggshell type, normal and vitreous, were sampled at the ages of 30, 50, and...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universidade Federal de Goiás
2016-10-01
|
| Series: | Ciência Animal Brasileira |
| Subjects: | |
| Online Access: | https://www.revistas.ufg.br/vet/article/view/21535 |
| _version_ | 1828496273489002496 |
|---|---|
| author | Daniela Reis Vilela Leticia Souza Silva Carvalho Naiara Simarro Fagundes Evandro de Abreu Fernandes |
| author_facet | Daniela Reis Vilela Leticia Souza Silva Carvalho Naiara Simarro Fagundes Evandro de Abreu Fernandes |
| author_sort | Daniela Reis Vilela |
| collection | DOAJ |
| description | The objective of this study was to evaluate the internal and external quality of eggs classified as eggs with normal eggshell and eggs with vitreous eggshell, produced by hens at three different ages. Forty-five eggs of each eggshell type, normal and vitreous, were sampled at the ages of 30, 50, and 70 weeks. The weight of the egg, in both types of eggshell, increased with the advancing age of the hen. Higher concentration of calcium was found in eggs with normal eggshells comparing to eggs with vitreous eggshells. The eggshell type did not affect phosphorus percentage. The mineral deposition of the eggshell was constant. The skin thickness increased irrespective of the shell along the reproductive life of the chicken and decreased when the bird became older. The percentage of albumen increased, while the percentage of albumen protein and pH decreased throughout the ages. Percentage of egg yolk, humidity, and pH decreased with increase of age of the laying hen, whereas crude protein and lipid increased. Eggs with vitreous eggshell showed eggshell with lower quality compared to those with normal eggshell, without, however, compromising the internal quality of albumen and yolk.
Keywords: egg quality; eggshell types; physical analysis. |
| first_indexed | 2024-12-11T12:26:54Z |
| format | Article |
| id | doaj.art-a8bc2f0107534e899913616cdd708348 |
| institution | Directory Open Access Journal |
| issn | 1518-2797 1809-6891 |
| language | English |
| last_indexed | 2024-12-11T12:26:54Z |
| publishDate | 2016-10-01 |
| publisher | Universidade Federal de Goiás |
| record_format | Article |
| series | Ciência Animal Brasileira |
| spelling | doaj.art-a8bc2f0107534e899913616cdd7083482022-12-22T01:07:22ZengUniversidade Federal de GoiásCiência Animal Brasileira1518-27971809-68912016-10-0117450951817370INTERNAL AND EXTERNAL QUALITY OF COMMERCIAL LAYING HENS EGGS WITH NORMAL AND VITREOUS EGGSHELLDaniela Reis Vilela0Leticia Souza Silva Carvalho1Naiara Simarro Fagundes2Evandro de Abreu Fernandes3Universidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de Uberlândia Prof. Dr. do Programa de Pós Graduação em Ciências Veterinárias UFU- MGThe objective of this study was to evaluate the internal and external quality of eggs classified as eggs with normal eggshell and eggs with vitreous eggshell, produced by hens at three different ages. Forty-five eggs of each eggshell type, normal and vitreous, were sampled at the ages of 30, 50, and 70 weeks. The weight of the egg, in both types of eggshell, increased with the advancing age of the hen. Higher concentration of calcium was found in eggs with normal eggshells comparing to eggs with vitreous eggshells. The eggshell type did not affect phosphorus percentage. The mineral deposition of the eggshell was constant. The skin thickness increased irrespective of the shell along the reproductive life of the chicken and decreased when the bird became older. The percentage of albumen increased, while the percentage of albumen protein and pH decreased throughout the ages. Percentage of egg yolk, humidity, and pH decreased with increase of age of the laying hen, whereas crude protein and lipid increased. Eggs with vitreous eggshell showed eggshell with lower quality compared to those with normal eggshell, without, however, compromising the internal quality of albumen and yolk. Keywords: egg quality; eggshell types; physical analysis.https://www.revistas.ufg.br/vet/article/view/21535Avicultura |
| spellingShingle | Daniela Reis Vilela Leticia Souza Silva Carvalho Naiara Simarro Fagundes Evandro de Abreu Fernandes INTERNAL AND EXTERNAL QUALITY OF COMMERCIAL LAYING HENS EGGS WITH NORMAL AND VITREOUS EGGSHELL Ciência Animal Brasileira Avicultura |
| title | INTERNAL AND EXTERNAL QUALITY OF COMMERCIAL LAYING HENS EGGS WITH NORMAL AND VITREOUS EGGSHELL |
| title_full | INTERNAL AND EXTERNAL QUALITY OF COMMERCIAL LAYING HENS EGGS WITH NORMAL AND VITREOUS EGGSHELL |
| title_fullStr | INTERNAL AND EXTERNAL QUALITY OF COMMERCIAL LAYING HENS EGGS WITH NORMAL AND VITREOUS EGGSHELL |
| title_full_unstemmed | INTERNAL AND EXTERNAL QUALITY OF COMMERCIAL LAYING HENS EGGS WITH NORMAL AND VITREOUS EGGSHELL |
| title_short | INTERNAL AND EXTERNAL QUALITY OF COMMERCIAL LAYING HENS EGGS WITH NORMAL AND VITREOUS EGGSHELL |
| title_sort | internal and external quality of commercial laying hens eggs with normal and vitreous eggshell |
| topic | Avicultura |
| url | https://www.revistas.ufg.br/vet/article/view/21535 |
| work_keys_str_mv | AT danielareisvilela internalandexternalqualityofcommerciallayinghenseggswithnormalandvitreouseggshell AT leticiasouzasilvacarvalho internalandexternalqualityofcommerciallayinghenseggswithnormalandvitreouseggshell AT naiarasimarrofagundes internalandexternalqualityofcommerciallayinghenseggswithnormalandvitreouseggshell AT evandrodeabreufernandes internalandexternalqualityofcommerciallayinghenseggswithnormalandvitreouseggshell |