
TY  - JOUR
A1  - McDonald, J 
A1  - Macfarlane, WV 
T1  - Renal function of sheep in hot environments
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 1958
VL  - 9
IS  - 5
SP  - 680
EP  - 692
KW  - 
UR  - https://doi.org/10.1071/AR9580680 
N2  - The renal functions of adult Merino and crossbred sheep have been measured throughout the year in Brisbane (lat. 27&#176; S.), and during acute and chronic exposure to hot environments (temperature 43&#176;C dry bulb, 36&#176;C wet bulb). In summer, glomerular filtration reached twice the rate found in winter and it rose during 2-9 weeks' exposure to heat. There was no change of glomerular filtration during 4 hours' acute heating at 43-44&#176;C dry bulb (36-37&#176;C wet bulb). Renal plasma flow, estimated by p-aminohippurate clearance, showed no variation with season, nor with exposures to heat. The mean tubular maximum of secretion of p-aminohippurate (TmPAH) of individual sheep ranged from 70 to 110 mg/min (2.1-2.6 mg/kg/min). These values are nearly twice those reported for other species. Some sheep showed depression of the TmPAH on long exposure to heat. 
ER  -

