Ionic constituents and osmolality of the small intestinal fluids of the laying hen

British Poultry Science
P Mongin


1. The osmotic pressure of the liquid phase of the contents of the small intestine is always hypertonic to plasma and not affected by egg formation. 2. Chloride concentration is higher during shell calcification, sodium and calcium concentrations increase at the end of shell deposition while calcium concentration shows a cyclic variation with a maximum 18 h after ovulation. 3. The relationships between the ions and water of the duodenum and upper jejunum are modified by egg formation: the apparent reduction of Na+ and W+ is compensated by an increase in Ca2+. 4. It is concluded that egg formation acts on the intestinal composition via the proventriculus and gizzard rather than through a direct effect on the intestine.


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Jan 1, 1982·Pflügers Archiv : European journal of physiology·Y Nys, P Mongin
Jan 1, 1982·Comparative Biochemistry and Physiology. A, Comparative Physiology·D H Thomas
Jan 1, 1986·Comparative Biochemistry and Physiology. C, Comparative Pharmacology and Toxicology·M C Cabrera-Saadoun, B Sauveur
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Sep 1, 1976·British Poultry Science·P Mongin
Jan 3, 2009·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Arie Bar
Aug 1, 1979·CRC Critical Reviews in Clinical Laboratory Sciences·L M Killingsworth

Related Concepts

Chloride Ion Level
Intestinal Absorption
Intestines, Small

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