Étude Comparative Du Fluide Utérin Et De l'ALBUMEN De l'ŒUF in Utero Chez La Poule

Abstract

RÉSUMÉLa nature des transferts qui interviennent dans l'hydratation de l'oeuf in utevo est également discutée ; il semble bien établi qu'à la suite de la phase de « plumping » (6-r2 h), interviennent des échanges cationiques entre l'albumen, le fluide utérin et le sang.

The secretion of glucose into the egg ofgallus domesticusand observations on the uterine secretion of cations

“…The general pattern of changes in the concentrations of Na + and K+ in the albumen and uterine fluid shown in Tables 1 and 2 was observed previously by Sauveur and Mongin (1971). In addition, these workers noted peaks in the concentrations of Ca^4", K + and H + in the uterine fluid 18 h after ovulation (i.e.…”

“…In the present work the Na+, K+ and Ca^1" concentrations approached more or less constant values at this time. Curiously, however, a peak was apparent in the glucose concentration of the uterine fluid at 13-5 h, which is close in time to the Ca^1" peak found by Sauveur and Mongin (1971).…”

“…This involves the diffusion of water and K + from the uterine fluid through the developing shell into the albumen. The diffusion continues at a much slower rate over the following 10 h (Burmester, 1940;Draper, 1966;Sauveur and Mongin, 1971).…”

“…Typically the fluid contains higher concentrations of diffusible Ca^, K+ and HCO^~, and lower concentrations of Na+ than the blood plasma (El Jack and Lake, 1967;Sauveur and Mongin, 1971). During most of this period the shell thickens with the deposition of calcium carbonate (Talbot and Tyler, 1974).…”

Studies on the avian shell gland during egg formation: Aqueous and electrolytic composition of the mucosa1

“…With the onset of shell calcification, the water content of the albumen remains constant, but the sodium content decreases with an accompanying rise in potassium (Sauveur andMongin, 1970, 1971). During this period changes in the uterine fluid occur 340 P. MONGIN AND N. W. CARTER Sauveur, 1970;Sauveur and Mongin, 1971). Thus, the variations in composition of both the extracellular uterine fluid and the albumen during egg formation are well characterised, but nothing is known of the intracellular composition of the shell gland mucosa.…”