Cargando…

Housing Systems Affect Eggshell Lightness and Free Amino Acid Contents of Egg Albumen in Tosa-Jidori Chickens: A Preliminary Research

SIMPLE SUMMARY: Although there are several housing systems (e.g., cage and litter) for egg layers, there is still no consensus about housing system effects on egg quality traits. Therefore, the purpose of this study is to determine housing effects on egg quality traits, including free amino acids of...

Descripción completa

Detalles Bibliográficos
Autores principales: Kawamura, Nonoka, Takaya, Masahiro, Hayashi, Hideaki, Goto, Tatsuhiko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10251838/
https://www.ncbi.nlm.nih.gov/pubmed/37889699
http://dx.doi.org/10.3390/ani13111837
_version_ 1785056027884912640
author Kawamura, Nonoka
Takaya, Masahiro
Hayashi, Hideaki
Goto, Tatsuhiko
author_facet Kawamura, Nonoka
Takaya, Masahiro
Hayashi, Hideaki
Goto, Tatsuhiko
author_sort Kawamura, Nonoka
collection PubMed
description SIMPLE SUMMARY: Although there are several housing systems (e.g., cage and litter) for egg layers, there is still no consensus about housing system effects on egg quality traits. Therefore, the purpose of this study is to determine housing effects on egg quality traits, including free amino acids of albumen and yolk. We observed significant housing effects in body weight gain, eggshell weight, yolk weight, eggshell thickness, eggshell lightness, and several albumen amino acids. Staying 7 weeks in a litter condition seemed to be enough to cause a significantly lighter eggshell color regardless of the egg production stages. These results will be important knowledge in the future layer industry. ABSTRACT: Many countries have gradually shifted to animal welfare-friendly housing systems for egg layers. However, there is still no consensus among researchers on whether the housing system affects egg quality traits. Therefore, this study aimed to determine the effects of housing systems on egg traits and free amino acid contents of albumen and yolk using two types of housing systems, the conventional cage (cage) system and a floor rearing (litter) system. Tosa-jidori (n = 20) hens were divided into two groups. Experiments during the 7 weeks were performed twice by switching the housing systems (first and second stages). One-way analysis of variance was used to evaluate the effects of housing systems on body weight gain, egg traits, albumen and yolk amino acid contents, and fecal corticosterone. We observed significant housing effects in body weight gain, eggshell weight, yolk weight, eggshell thickness, eggshell lightness, and several albumen amino acids (A_Gln, A_His, A_Met, A_Cys, A_Lys, A_Asp, A_Glu, A_Ser, A_Thr, A_Ala, A_Pro, and A_Phe). Notably, a robust effect was seen in eggshell lightness, even after switching housing systems. These results suggest that eggshell lightness and several egg traits, including albumen amino acid contents, can be changed by using the different housing systems.
format Online
Article
Text
id pubmed-10251838
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-102518382023-06-10 Housing Systems Affect Eggshell Lightness and Free Amino Acid Contents of Egg Albumen in Tosa-Jidori Chickens: A Preliminary Research Kawamura, Nonoka Takaya, Masahiro Hayashi, Hideaki Goto, Tatsuhiko Animals (Basel) Article SIMPLE SUMMARY: Although there are several housing systems (e.g., cage and litter) for egg layers, there is still no consensus about housing system effects on egg quality traits. Therefore, the purpose of this study is to determine housing effects on egg quality traits, including free amino acids of albumen and yolk. We observed significant housing effects in body weight gain, eggshell weight, yolk weight, eggshell thickness, eggshell lightness, and several albumen amino acids. Staying 7 weeks in a litter condition seemed to be enough to cause a significantly lighter eggshell color regardless of the egg production stages. These results will be important knowledge in the future layer industry. ABSTRACT: Many countries have gradually shifted to animal welfare-friendly housing systems for egg layers. However, there is still no consensus among researchers on whether the housing system affects egg quality traits. Therefore, this study aimed to determine the effects of housing systems on egg traits and free amino acid contents of albumen and yolk using two types of housing systems, the conventional cage (cage) system and a floor rearing (litter) system. Tosa-jidori (n = 20) hens were divided into two groups. Experiments during the 7 weeks were performed twice by switching the housing systems (first and second stages). One-way analysis of variance was used to evaluate the effects of housing systems on body weight gain, egg traits, albumen and yolk amino acid contents, and fecal corticosterone. We observed significant housing effects in body weight gain, eggshell weight, yolk weight, eggshell thickness, eggshell lightness, and several albumen amino acids (A_Gln, A_His, A_Met, A_Cys, A_Lys, A_Asp, A_Glu, A_Ser, A_Thr, A_Ala, A_Pro, and A_Phe). Notably, a robust effect was seen in eggshell lightness, even after switching housing systems. These results suggest that eggshell lightness and several egg traits, including albumen amino acid contents, can be changed by using the different housing systems. MDPI 2023-06-01 /pmc/articles/PMC10251838/ /pubmed/37889699 http://dx.doi.org/10.3390/ani13111837 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kawamura, Nonoka
Takaya, Masahiro
Hayashi, Hideaki
Goto, Tatsuhiko
Housing Systems Affect Eggshell Lightness and Free Amino Acid Contents of Egg Albumen in Tosa-Jidori Chickens: A Preliminary Research
title Housing Systems Affect Eggshell Lightness and Free Amino Acid Contents of Egg Albumen in Tosa-Jidori Chickens: A Preliminary Research
title_full Housing Systems Affect Eggshell Lightness and Free Amino Acid Contents of Egg Albumen in Tosa-Jidori Chickens: A Preliminary Research
title_fullStr Housing Systems Affect Eggshell Lightness and Free Amino Acid Contents of Egg Albumen in Tosa-Jidori Chickens: A Preliminary Research
title_full_unstemmed Housing Systems Affect Eggshell Lightness and Free Amino Acid Contents of Egg Albumen in Tosa-Jidori Chickens: A Preliminary Research
title_short Housing Systems Affect Eggshell Lightness and Free Amino Acid Contents of Egg Albumen in Tosa-Jidori Chickens: A Preliminary Research
title_sort housing systems affect eggshell lightness and free amino acid contents of egg albumen in tosa-jidori chickens: a preliminary research
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10251838/
https://www.ncbi.nlm.nih.gov/pubmed/37889699
http://dx.doi.org/10.3390/ani13111837
work_keys_str_mv AT kawamuranonoka housingsystemsaffecteggshelllightnessandfreeaminoacidcontentsofeggalbumenintosajidorichickensapreliminaryresearch
AT takayamasahiro housingsystemsaffecteggshelllightnessandfreeaminoacidcontentsofeggalbumenintosajidorichickensapreliminaryresearch
AT hayashihideaki housingsystemsaffecteggshelllightnessandfreeaminoacidcontentsofeggalbumenintosajidorichickensapreliminaryresearch
AT gototatsuhiko housingsystemsaffecteggshelllightnessandfreeaminoacidcontentsofeggalbumenintosajidorichickensapreliminaryresearch