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primary topic: http://eprints.science-line.com/id/eprint/1409

http://eprints.science-line.com/id/eprint/1409
type: AcademicArticle
type: Article
title: Effects of Layer Breeder Age and Early Hypoxic Stimulation (ED 7–9) of the Chorioallantois Membrane on Eggshell Decalcification, Neovascularization of Heart Tissue, Mineralization and Morphometrics of Hatchlings
abstract: Oxygen concentration (O2) during incubation is crucial for embryo development, and hypoxic conditions can influence phenotypic plasticity in poultry. Although low O2 (hypoxia) can be detrimental, it may also promote adaptive responses. Breeder age, a known genetic determinant of egg quality and embryonic development, is likely to interact with O2 levels during incubation, however, this relationship remains understudied in layer breeders. This study examined how layer breeder age and reduced oxygen (O2) levels during early embryonic development affect various factors, including eggshell decalcification (Dcal-SHL), chorioallantoic membrane (CAM) weight, heart tissue vascularization, egg weight loss (EWL), eggshell temperature (EST), and calcium (Ca) and phosphorus (P) content in bone and blood and tibia and femur morphometrics. A total of 900 eggs from 33 and 50-week-old ISA brown layer breeders were incubated in a 2x3 factorial design with O2 levels of 15, 17 (hypoxic), and 21 (control). Oxygen was reduced for 1hr/day from embryonic days (ED) 7–9 using air-N2 flushing. Results showed increased CAM weight and heart tissue vascularization under hypoxia, especially in older breeders (50 weeks). Hypoxic conditions (15 and 17 O2) reduced embryo weight loss and eggshell temperature compared to controls during the post-exposure phase (ED 15–18). There was an interaction between breeder age and O2 levels on mineral absorption, with reduced oxygen leading to lower Ca and P absorption in bones, higher eggshell P retention, and decreased tibia morphometrics (weight, length, diameter, and seedor index) in hatchlings. Additionally, CAM weight correlated negatively with Dcal-SHL Ca at 15 O2. The study concluded that reduced oxygen during early embryonic development increases CAM weight, heart neovascularization, and Ca mobilization from eggshell to blood. However, older flocks exhibited reduced Ca transfer to bones, likely due to homeostatic imbalance. Open Access: This article is…
date: 2024-12-24
volume: 14
issue: 4
is part of: Journal of World's Poultry Research
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository
has document: http://eprints.science-line.com/id/document/2528
has version: http://eprints.science-line.com/id/document/2528
has published: http://eprints.science-line.com/id/document/2528
subject: SF Animal culture

http://eprints.science-line.com/id/document/2528
type: Document
label: Effects of Layer Breeder Age and Early Hypoxic Stimulation (ED 7–9) of the Chorioallantois Membrane on Eggshell Decalcification, Neovascularization of Heart Tissue, Mineralization and Morphometrics of Hatchlings (Text)
has file: JWPR14(4) 418-437, 2024 (2).pdf
has part: JWPR14(4) 418-437, 2024 (2).pdf

Scienceline Publication
type: Organization

Journal of World's Poultry Research
type: Collection
issn: 2322455X

Prince Sasu
type: Person
given name: Prince
family name: Sasu

Yaah Aimee Emmanuelle Kouame
type: Person
given name: Yaah Aimee Emmanuelle
family name: Kouame

Kokou Tona
type: Person
given name: Kokou
family name: Tona

Benjamin Adjei-Mensah
type: Person
given name: Benjamin
family name: Adjei-Mensah

Achiamaa Asafu-adjaye Koranteng
type: Person
given name: Achiamaa Asafu-adjaye
family name: Koranteng

Hezouwe Tchilabalo Meteyake
type: Person
given name: Hezouwe Tchilabalo
family name: Meteyake

Richard Koblah Agbehadzi
type: Person
given name: Richard Koblah
family name: Agbehadzi

Nideou Dassidi
type: Person
given name: Nideou
family name: Dassidi

Jacob Alhassan Hamidu
type: Person
given name: Jacob Alhassan
family name: Hamidu

http://eprints.science-line.com/id/eprint/1409/
title: HTML Summary of #1409 <epc:when xmlns:epc="http://eprints.org/ep3/control" test="title">Effects of Layer Breeder Age and Early Hypoxic Stimulation (ED 7–9) of the Chorioallantois Membrane on Eggshell Decalcification, Neovascularization of Heart Tissue, Mineralization and Morphometrics of Hatchlings</epc:when>
format: text/html
primary topic: http://eprints.science-line.com/id/eprint/1409

SF Animal culture
type: Concept