ABSTRACT
Bali cattle (Bos sondaicus) are the direct result of the domestication of wild banteng (Bos banteng). The purpose of this study was to determine the difference in heat tolerance coefficient and sweating rate between Bos sondaicus (Bali cattle) and Bos taurus (Limousin and Simmental) bulls. The research method was a case study and used 6 Bali, 6 Limousin, and 6 Simmental bulls. The data obtained were tested statistically by unpaired t-test. The average t rectal, respiration frequency, and HTC of animals in this study (P>0.05) were 38–39.2°C, 32.2–33.2 times/minute, and 2.4–2.46, respectively. Both animals experienced slight heat stress (HTC>2). The average sweating rates of Bali, Limousin, and Simmental bulls were 516.8 ± 19.06, 408.1 ± 24.93, 436.1 ± 12.58 g/m2h (p<0.05), respectively. The conclusion of this study is that Bos taurus had difficulties in releasing body heat to the environment through the skin which is indicated by the lower sweating rate than Bos sondaicus.
