{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T04:18:49Z","timestamp":1791260329816,"version":"4.1.0"},"reference-count":33,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2021,2,26]],"date-time":"2021-02-26T00:00:00Z","timestamp":1614297600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100010198","name":"Ministerio de Econom\u00eda, Industria y Competitividad, Gobierno de Espa\u00f1a","doi-asserted-by":"publisher","award":["ITC-20161169\/Ovofortis"],"award-info":[{"award-number":["ITC-20161169\/Ovofortis"]}],"id":[{"id":"10.13039\/501100010198","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002878","name":"Consejer\u00eda de Econom\u00eda, Innovaci\u00f3n, Ciencia y Empleo, Junta de Andaluc\u00eda","doi-asserted-by":"publisher","award":["RNM-179"],"award-info":[{"award-number":["RNM-179"]}],"id":[{"id":"10.13039\/501100002878","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006393","name":"Universidad de Granada","doi-asserted-by":"publisher","award":["UCE PP 2016.05"],"award-info":[{"award-number":["UCE PP 2016.05"]}],"id":[{"id":"10.13039\/501100006393","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>(1) Background: Nowadays the industry aims to improve lay persistency for extended cycles (100 weeks or longer) to make egg production more sustainable. However, intensive egg production challenges hen health, inducing severe osteoporosis and the incidence of bone fractures. In this study, the relationship between bone quality and egg production, and\/or eggshell quality, was evaluated at the end of an extended laying cycle of 100 weeks, comparing groups of hens with different production and eggshell quality parameters; (2) Methods: Quality parameters of egg (as weight, egg white height), eggshell (as thickness, weight, breaking strength, elasticity and microstructure) and tibiae bone (weight, diameter, cortical thickness, ash weight, breaking strength, medullary bone) were determined; (3) Results: Hens from groups with a high egg production and good eggshell quality have poorer bone quality (lower ash weight and lesser amount of medullary bone). However, Pearson\u2019s correlation analysis shows no clear relationship between bone and egg\/eggshell parameters. (4) Conclusions: Bone and egg production\/eggshell quality are independent and can be improved separately. Medullary bone has an important contribution to bone mechanical properties, being important to accumulate enough bone medullary bone early in life to maintain skeletal integrity and eggshell quality in old hens.<\/jats:p>","DOI":"10.3390\/ani11030623","type":"journal-article","created":{"date-parts":[[2021,2,26]],"date-time":"2021-02-26T21:02:34Z","timestamp":1614373354000},"page":"623","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":87,"title":["Relationship between Bone Quality, Egg Production and Eggshell Quality in Laying Hens at the End of an Extended Production Cycle (105 Weeks)"],"prefix":"10.3390","volume":"11","author":[{"given":"Clara","family":"Alfonso-Carrillo","sequence":"first","affiliation":[{"name":"Trouw Nutrition R&amp;D, Ctra. CM 4004, km 10.5, Casarrubios del Monte, 45950 Toledo, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5786-4657","authenticated-orcid":false,"given":"Cristina","family":"Benavides-Reyes","sequence":"additional","affiliation":[{"name":"Departamento de Mineralog\u00eda y Petrolog\u00eda, Universidad de Granada, 18002 Granada, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jon","family":"de los Mozos","sequence":"additional","affiliation":[{"name":"Trouw Nutrition R&amp;D, Ctra. CM 4004, km 10.5, Casarrubios del Monte, 45950 Toledo, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nazaret","family":"Dominguez-Gasca","sequence":"additional","affiliation":[{"name":"Departamento de Mineralog\u00eda y Petrolog\u00eda, Universidad de Granada, 18002 Granada, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8164-6513","authenticated-orcid":false,"given":"Estefan\u00eda","family":"Sanchez-Rodr\u00edguez","sequence":"additional","affiliation":[{"name":"Departamento de Mineralog\u00eda y Petrolog\u00eda, Universidad de Granada, 18002 Granada, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2132-4808","authenticated-orcid":false,"given":"Ana Isabel","family":"Garcia-Ruiz","sequence":"additional","affiliation":[{"name":"Trouw Nutrition R&amp;D, Ctra. CM 4004, km 10.5, Casarrubios del Monte, 45950 Toledo, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alejandro B.","family":"Rodriguez-Navarro","sequence":"additional","affiliation":[{"name":"Departamento de Mineralog\u00eda y Petrolog\u00eda, Universidad de Granada, 18002 Granada, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,2,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1080\/00071668.2016.1161727","article-title":"Increasing persistency in lay and stabilising egg quality in longer laying cycles. What are the challenges?","volume":"57","author":"Bain","year":"2016","journal-title":"Br. Poult. Sci."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Nys, Y. (2017). Laying hen nutrition: Optimising hen performance and health, bone and eggshell quality. 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