Structural characteristics of speckled chicken eggshells and their effect on reproductive performance

ABSTRACT: Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality bet...
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Gespeichert in:

Autor*in:	Xue Cheng [verfasserIn] Ying Ma [verfasserIn] Xinghua Li [verfasserIn] Yuchen Liu [verfasserIn] Ruiqi Zhang [verfasserIn] Yalan Zhang [verfasserIn] Cuidie Fan [verfasserIn] Lujiang Qu [verfasserIn] Zhonghua Ning [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	chicken egg eggshell quality speckle protoporphyrin IX pigment

Übergeordnetes Werk:	In: Poultry Science - Elsevier, 2020, 102(2023), 2, Seite 102376-
Übergeordnetes Werk:	volume:102 ; year:2023 ; number:2 ; pages:102376-

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1016/j.psj.2022.102376

Katalog-ID:	DOAJ081379781

Internformat


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allfields	10.1016/j.psj.2022.102376 doi (DE-627)DOAJ081379781 (DE-599)DOAJf2eb013bd3b047c8bb8cb495ed951e77 DE-627 ger DE-627 rakwb eng SF1-1100 Xue Cheng verfasserin aut Structural characteristics of speckled chicken eggshells and their effect on reproductive performance 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells. chicken egg eggshell quality speckle protoporphyrin IX pigment Animal culture Ying Ma verfasserin aut Xinghua Li verfasserin aut Yuchen Liu verfasserin aut Ruiqi Zhang verfasserin aut Yalan Zhang verfasserin aut Cuidie Fan verfasserin aut Lujiang Qu verfasserin aut Zhonghua Ning verfasserin aut In Poultry Science Elsevier, 2020 102(2023), 2, Seite 102376- (DE-627)320569535 (DE-600)2016331-9 15253171 nnns volume:102 year:2023 number:2 pages:102376- https://doi.org/10.1016/j.psj.2022.102376 kostenfrei https://doaj.org/article/f2eb013bd3b047c8bb8cb495ed951e77 kostenfrei http://www.sciencedirect.com/science/article/pii/S0032579122006708 kostenfrei https://doaj.org/toc/0032-5791 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 102 2023 2 102376-
spelling	10.1016/j.psj.2022.102376 doi (DE-627)DOAJ081379781 (DE-599)DOAJf2eb013bd3b047c8bb8cb495ed951e77 DE-627 ger DE-627 rakwb eng SF1-1100 Xue Cheng verfasserin aut Structural characteristics of speckled chicken eggshells and their effect on reproductive performance 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells. chicken egg eggshell quality speckle protoporphyrin IX pigment Animal culture Ying Ma verfasserin aut Xinghua Li verfasserin aut Yuchen Liu verfasserin aut Ruiqi Zhang verfasserin aut Yalan Zhang verfasserin aut Cuidie Fan verfasserin aut Lujiang Qu verfasserin aut Zhonghua Ning verfasserin aut In Poultry Science Elsevier, 2020 102(2023), 2, Seite 102376- (DE-627)320569535 (DE-600)2016331-9 15253171 nnns volume:102 year:2023 number:2 pages:102376- https://doi.org/10.1016/j.psj.2022.102376 kostenfrei https://doaj.org/article/f2eb013bd3b047c8bb8cb495ed951e77 kostenfrei http://www.sciencedirect.com/science/article/pii/S0032579122006708 kostenfrei https://doaj.org/toc/0032-5791 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 102 2023 2 102376-
allfields_unstemmed	10.1016/j.psj.2022.102376 doi (DE-627)DOAJ081379781 (DE-599)DOAJf2eb013bd3b047c8bb8cb495ed951e77 DE-627 ger DE-627 rakwb eng SF1-1100 Xue Cheng verfasserin aut Structural characteristics of speckled chicken eggshells and their effect on reproductive performance 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells. chicken egg eggshell quality speckle protoporphyrin IX pigment Animal culture Ying Ma verfasserin aut Xinghua Li verfasserin aut Yuchen Liu verfasserin aut Ruiqi Zhang verfasserin aut Yalan Zhang verfasserin aut Cuidie Fan verfasserin aut Lujiang Qu verfasserin aut Zhonghua Ning verfasserin aut In Poultry Science Elsevier, 2020 102(2023), 2, Seite 102376- (DE-627)320569535 (DE-600)2016331-9 15253171 nnns volume:102 year:2023 number:2 pages:102376- https://doi.org/10.1016/j.psj.2022.102376 kostenfrei https://doaj.org/article/f2eb013bd3b047c8bb8cb495ed951e77 kostenfrei http://www.sciencedirect.com/science/article/pii/S0032579122006708 kostenfrei https://doaj.org/toc/0032-5791 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 102 2023 2 102376-
allfieldsGer	10.1016/j.psj.2022.102376 doi (DE-627)DOAJ081379781 (DE-599)DOAJf2eb013bd3b047c8bb8cb495ed951e77 DE-627 ger DE-627 rakwb eng SF1-1100 Xue Cheng verfasserin aut Structural characteristics of speckled chicken eggshells and their effect on reproductive performance 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells. chicken egg eggshell quality speckle protoporphyrin IX pigment Animal culture Ying Ma verfasserin aut Xinghua Li verfasserin aut Yuchen Liu verfasserin aut Ruiqi Zhang verfasserin aut Yalan Zhang verfasserin aut Cuidie Fan verfasserin aut Lujiang Qu verfasserin aut Zhonghua Ning verfasserin aut In Poultry Science Elsevier, 2020 102(2023), 2, Seite 102376- (DE-627)320569535 (DE-600)2016331-9 15253171 nnns volume:102 year:2023 number:2 pages:102376- https://doi.org/10.1016/j.psj.2022.102376 kostenfrei https://doaj.org/article/f2eb013bd3b047c8bb8cb495ed951e77 kostenfrei http://www.sciencedirect.com/science/article/pii/S0032579122006708 kostenfrei https://doaj.org/toc/0032-5791 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 102 2023 2 102376-
allfieldsSound	10.1016/j.psj.2022.102376 doi (DE-627)DOAJ081379781 (DE-599)DOAJf2eb013bd3b047c8bb8cb495ed951e77 DE-627 ger DE-627 rakwb eng SF1-1100 Xue Cheng verfasserin aut Structural characteristics of speckled chicken eggshells and their effect on reproductive performance 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier ABSTRACT: Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells. chicken egg eggshell quality speckle protoporphyrin IX pigment Animal culture Ying Ma verfasserin aut Xinghua Li verfasserin aut Yuchen Liu verfasserin aut Ruiqi Zhang verfasserin aut Yalan Zhang verfasserin aut Cuidie Fan verfasserin aut Lujiang Qu verfasserin aut Zhonghua Ning verfasserin aut In Poultry Science Elsevier, 2020 102(2023), 2, Seite 102376- (DE-627)320569535 (DE-600)2016331-9 15253171 nnns volume:102 year:2023 number:2 pages:102376- https://doi.org/10.1016/j.psj.2022.102376 kostenfrei https://doaj.org/article/f2eb013bd3b047c8bb8cb495ed951e77 kostenfrei http://www.sciencedirect.com/science/article/pii/S0032579122006708 kostenfrei https://doaj.org/toc/0032-5791 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_252 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 102 2023 2 102376-
language	English
source	In Poultry Science 102(2023), 2, Seite 102376- volume:102 year:2023 number:2 pages:102376-
sourceStr	In Poultry Science 102(2023), 2, Seite 102376- volume:102 year:2023 number:2 pages:102376-
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	chicken egg eggshell quality speckle protoporphyrin IX pigment Animal culture
isfreeaccess_bool	true
container_title	Poultry Science
authorswithroles_txt_mv	Xue Cheng @@aut@@ Ying Ma @@aut@@ Xinghua Li @@aut@@ Yuchen Liu @@aut@@ Ruiqi Zhang @@aut@@ Yalan Zhang @@aut@@ Cuidie Fan @@aut@@ Lujiang Qu @@aut@@ Zhonghua Ning @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	320569535
id	DOAJ081379781
language_de	englisch
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They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. 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callnumber-first	S - Agriculture
author	Xue Cheng
spellingShingle	Xue Cheng misc SF1-1100 misc chicken egg misc eggshell quality misc speckle misc protoporphyrin IX pigment misc Animal culture Structural characteristics of speckled chicken eggshells and their effect on reproductive performance
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topic_title	SF1-1100 Structural characteristics of speckled chicken eggshells and their effect on reproductive performance chicken egg eggshell quality speckle protoporphyrin IX pigment
topic	misc SF1-1100 misc chicken egg misc eggshell quality misc speckle misc protoporphyrin IX pigment misc Animal culture
topic_unstemmed	misc SF1-1100 misc chicken egg misc eggshell quality misc speckle misc protoporphyrin IX pigment misc Animal culture
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title	Structural characteristics of speckled chicken eggshells and their effect on reproductive performance
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title_full	Structural characteristics of speckled chicken eggshells and their effect on reproductive performance
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title_sort	structural characteristics of speckled chicken eggshells and their effect on reproductive performance
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title_auth	Structural characteristics of speckled chicken eggshells and their effect on reproductive performance
abstract	ABSTRACT: Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells.
abstractGer	ABSTRACT: Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells.
abstract_unstemmed	ABSTRACT: Speckles are common on the brown eggshells of chicken eggs, especially for aged hens. They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells.
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title_short	Structural characteristics of speckled chicken eggshells and their effect on reproductive performance
url	https://doi.org/10.1016/j.psj.2022.102376 https://doaj.org/article/f2eb013bd3b047c8bb8cb495ed951e77 http://www.sciencedirect.com/science/article/pii/S0032579122006708 https://doaj.org/toc/0032-5791
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They are important as they affect the consumer preference and economic value of eggs. The cause of speckles in eggshells is still unclear. In this study, we verified the difference of eggshell quality between speckled eggs and normal eggs. Structural characteristics of speckled eggshells were investigated using a scanning electron microscope. Results showed no significant difference in the eggshell quality between normal eggs and speckled eggs, except for a lower eggshell color–L value in the latter. More materials deposited between vertical crystal layer and cuticle layer in the speckled shell region, leading to the thicker eggshell than adjacent normal area. The relative content of protoporphyrin IX was significantly higher in the speckled area than in the adjacent normal area of the eggshells. In addition, there was no significant differences in productive and reproductive performance between hens that laid normal eggs or speckled eggs, except for a lower hatchability of the speckled eggs. In conclusion, we infer that the uneven distribution of eggshell pigment protoporphyrin IX leads to the formation of speckled eggs. This is the first study to establish the characteristics and causes of speckled eggshells. Moreover, this study provides novel insights into external egg quality and a foundation for the in-depth study of speckled eggshells.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">chicken egg</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">eggshell quality</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">speckle</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">protoporphyrin IX pigment</subfield></datafield><datafield tag="653" ind1=" " ind2="0"><subfield code="a">Animal culture</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Ying Ma</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" "><subfield code="a">Xinghua Li</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="0" ind2=" 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Structural characteristics of speckled chicken eggshells and their effect on reproductive performance

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