| Changes in eggshell conductance after transfer of hens from an altitude of 3,800 to 1,200 m. | |
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MedLine Citation:
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PMID: 7153140 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Hens acclimated to an altitude of 3,800 m (PB 480 Torr) were transferred to 1,200 m (PB 657 Torr). Eggs were collected before departure and daily after the transfer so that changes in eggshell conductance could be studied. Over the next 2 mo eggshell conductance increased 30%, presumably to compensate for the 37% reduction (from 657 to 480 Torr) in gas diffusivity at the lower altitude. Measurements of shell thickness and number of pores in the shell allow one to calculate that most of the change in total pore area occurred by an increase in cross-sectional area of individual pores. |
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Authors:
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H Rahn; T Ledoux; C V Paganelli; A H Smith |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of applied physiology: respiratory, environmental and exercise physiology Volume: 53 ISSN: 0161-7567 ISO Abbreviation: J Appl Physiol Publication Date: 1982 Dec |
Date Detail:
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Created Date: 1983-03-11 Completed Date: 1983-03-11 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 7801242 Medline TA: J Appl Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1429-31 Citation Subset: IM; S |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological* Altitude* Animals Chickens / physiology* Egg Shell* / ultrastructure Female Permeability Water |
| Chemical | |
Reg. No./Substance:
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7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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