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These characteristics make quail an ideal model for examining the development of the gastrointestinal tract. Consequently, the embryonic development of the colorectum was conducted to provide a comprehensive understanding of its functions in digestion, absorption, and immunity.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methodology<\/jats:title>\n                <jats:p>The morphological anatomy and microscopical structure of the colorectal wall of 74 embryos were studied using light and scanning electron microscopy (SEM). Histologically, the embryos were collected and dissected to extract the intestine. The samples were then fixed in 10% neutral buffer formalin for a minimum of 24\u00a0h, and in 2.5% glutaraldehyde buffer formalin for semithin processing and scanning electron microscopy.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The wall of the embryonic colorectum on the hatching day consisted of three layers; mucosa, muscularis externa, and serosa. Mucosa was a simple layer of columnar enterocytes interspersed with goblet cells that appeared as cub-like shaped cells. Additionally, two ganglionic plexuses were also developed in the colorectal wall; Auerbach plexus (among the colorectal tunica muscularis) and Meissner plexus (submucosal plexus).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>The morphological characteristics of the quail colorectum at different ages were closely related to its functional features.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12917-024-04341-z","type":"journal-article","created":{"date-parts":[[2024,11,6]],"date-time":"2024-11-06T09:05:00Z","timestamp":1730883900000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Descriptive embryological insights of the colorectum of quail embryos with concern to its functional morphology"],"prefix":"10.1186","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6822-1454","authenticated-orcid":false,"given":"Fatma","family":"Abdelhakeem","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fatma A.","family":"Madkour","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,11,6]]},"reference":[{"issue":"6","key":"4341_CR1","first-page":"615","volume":"23","author":"B Parisa","year":"2019","unstructured":"Parisa B, Khojaste B, Mahdi S. 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The study is applied following the ARRIVE guidelines. The collection of embryos and all experimental protocols were carried out in accordance with relevant guidelines and regulations approved by the institutional ethical council. All national and institutional guidelines for animal care and use were been followed throughout this study. The embryos used in this study research were obtained from Japanese quail farm of South Valley University, Qena, Egypt.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"The South Valley University, Faculty of Veterinary Medicine, Qena, Egypt, provided financial assistance for this research.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Financial support"}},{"value":"Not Applicable.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"508"}}