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.

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Skrzypczak W. , Drzeżdżon D. 2001. KIDNEYS ADAPTATION OF KID AND CALF NEWBORNS TO NATREMIA REGULATION, EJPAU 4(2), #02.
Available Online: http://www.ejpau.media.pl/volume4/issue2/veterinary/abs-02.html

ABSTRACT

The experiment was carried out by means of clearance methods on 8 kids of Biała Szlachetna breed and 10 calves of black–white breed in the period of the first 14 days of their life. The goal of the examination was to specify the kidneys ability to regulate natremia. It was proved that goats’ and calves’ kidneys have the ability to keep natremia as early as from the moment of birth, yet the dynamics of kidneys functional changes in this period differs depending on the species of animal. The stabilisation of glomerular filtration rate and tubular sodium resorption in kids` kidneys take place in the first week of their life. It is the most difficult period to keep water-electrolyte homeostasis of organisms of these animals. Low effectiveness of sodium saving in calves kidneys was found, which may be the reason for limited adaptative abilities of these animals in their neonatal period.

Key words: kidneys, neonatal period, adaptation, glomerular filtration rate, tubule resorption, excretion, sodium, natremia.

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