EJPAU 2009. Michałek K. , Ożgo M. , Skrzypczak W. RENAL UREA EXCRETION IN SINGLE- AND TWIN-PREGNANT GOATS

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2009
Volume 12
Issue 1

Topic:

Veterinary Medicine

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Michałek K. , Ożgo M. , Skrzypczak W. 2009. RENAL UREA EXCRETION IN SINGLE- AND TWIN-PREGNANT GOATS, EJPAU 12(1), #09.
Available Online: http://www.ejpau.media.pl/volume12/issue1/abs-09.html

RENAL UREA EXCRETION IN SINGLE- AND TWIN-PREGNANT GOATS

Katarzyna Michałek, Małgorzata Ożgo, Wiesław F. Skrzypczak
Departament of Animal Physiology and Cytobiology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Poland

ABSTRACT

The aim of the studies was to trace
changes in urea blood plasma concentration and renal excretion and to compare
these between groups of single- and twin-pregnant goats. Clearance tests involved
16 pregnant White Improved does (8 in single- and 8 in twin pregnancy). Urea
concentration was determined in blood plasma and urine. It has been demonstrated
that renal nitrogen metabolism in pregnant goats is saving in character. Renal
retention of urea increases nearly from the onset of gestation and is more intensive
in the goats carrying two foetuses, although the differences we found were not
statistically significant. Despite the elevated tubular reabsorption of urea
in both groups, its blood plasma concentration does not increase; even a falling
trend can be seen over the last 3 gestational months (especially in twin pregnancy).
This is most probably a result of an increased urea recycling in the lumen of
the alimentary tract and an enhanced circulation of this metabolite within the blood-rumen-blood system.

Key words: kidney, single and twin pregnancy, excretion, urea.

Katarzyna Michałek
Departament of Animal Physiology and Cytobiology,
Faculty of Biotechnology and Animal Husbandry,
West Pomeranian University of Technology, Szczecin, Poland
Doktora Judyma 6, 71–466 Szczecin, Poland

Małgorzata Ożgo
Departament of Animal Physiology and Cytobiology,
Faculty of Biotechnology and Animal Husbandry,
West Pomeranian University of Technology, Szczecin, Poland
Doktora Judyma 6, 71–-466 Szczecin, Poland

Wiesław F. Skrzypczak
Departament of Animal Physiology and Cytobiology,
Faculty of Biotechnology and Animal Husbandry,
West Pomeranian University of Technology, Szczecin, Poland
Doktora Judyma 6, 71–466 Szczecin, Poland

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