Veterinary Archives, Vol. 77 No. 3, 2007.
Original scientific paper
Solute loads and transfer function of kidney in dromedary camel during dehydration and rehydration in winter and summer
Nalini Kataria
; Department of Veterinary Physiology, College of Veterinary and Animal Sciences, Bikaner, Rajasthan, India
Anil Kumar Kataria
; Department of Veterinary Microbiology, College of Veterinary and Animal Sciences, Bikaner, Rajasthan, India
Virendra Kumar Agarwal
; Department of Veterinary Biochemistry, Haryana Agricultural University, Hisar, Haryana, India
Sohan Lal Garg
; Department of Veterinary Biochemistry, Haryana Agricultural University, Hisar, Haryana, India
Mohan Singh Sahni
; National Research Centre on Camel, Bikaner, India
Abstract
The effect of dehydration and rehydration was studied during winter and summer on solute loads and transfer function of kidney in healthy adult female dromedary camels. Kidney solute loads (KSLs) which included plasma loads (PL) and tubular loads (TL) were determined for glucose, proteins, urea, creatinine, sodium, potassium, chloride, calcium and phosphorus. The dehydration period was of 24 days in winter and 13 days in summer. Water was provided ad libitum during control and rehydration periods and was restricted
completely during dehydration period. The mean value of TFK during summer control was significantly (P≤0.05) lower than that in winter control. In winter the mean values of TFK during rehydration phases differed significantly (P≤0.05) from control values. A similar trend was observed during summer, except that the calculations for TFK could not be made at hour ½ and at hour 2 of rehydration since animals did not void urine. During dehydration periods in both seasons PL and TL mean values decreased significantly (P≤0.05) from respective control mean values. It was concluded that during dehydration reduction in kidney solute loads was indicative of the water conservation ability of camels because reduced plasma loads and tubular loads resulted in trapping of constituents in the plasma to hold more water.
Keywords
dehydration; dromedary; kidney solute loads; rehydration; summer; transfer function of kidney; winter
Hrčak ID:
24844
URI
Publication date:
20.6.2007.
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