Glomerular Filtration Rate and Renal Recovery of [14C]-Allantoin in Bali and Zebu Cattle of Indonesia

The urinary recovery of [14C]-allantoin injected into the blood of Bali Cattle (Bos banteng) and Zebu cattle (Bos indicus), and the glomerular filtration rate (GFR) of these animals, were determined. The cattle were fed with king grass at 95% of ad libitum intake. The recovery of [14C]-allantoin in the urine was significantly higher for Bali (83 ±SE 0.94%) than for Zebu Cattle (74 ± SE 0.79%). There were no significant differences in GFR between Bali and Zebu cattle (302 ±SE23.8 and 285±SE18.7 L/d). Within each species, there was no significant effect of GFR on the [14C]-allantoin recovery. It remains to be investigated whether the differences in [14C]-allantoin recovery between species is affected by GFR.