Changes in eggshell conductance after transfer of hens from an altitude of 3,800 to 1,200 m

Autor:	Hermann Rahn, T. Ledoux, A. H. Smith, C. V. Paganelli
Rok vydání:	1982
Předmět:	Physiology Chemistry Altitude Analytical chemistry Conductance Mineralogy Water Thermal diffusivity Adaptation Physiological Permeability Egg Shell Permeability (electromagnetism) Physiology (medical) Torr Animals Female Eggshell Chickens
Zdroj:	Journal of applied physiology: respiratory, environmental and exercise physiology. 53(6)
ISSN:	0161-7567
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecb64721730a7c208a392951df089fe6 https://pubmed.ncbi.nlm.nih.gov/7153140 Zobrazit plný text záznamu