| Abstrakt: |
This study aims to evaluate the stress level of several beef cattle breeds kept at the Beef Cattle Research Institute (BCRI) based on the influence of humidity and ambient temperature, sweat levels, and the cortisol hormone. The material used was 186 cows, consisting of 53 Peranakan Ongole (PO), 53 Madura, 35 Jabres, 19 Galekan, 4 Rambon, 4 Bali, 4 PO x Bali cross (POBA), and 14 Belgian Blue (BB) x PO cross. The variables observed were temperature (°C) and humidity in the housing environment, sweating rate, and cortisol hormone concentration. The sweating rate was collected using Cobalt Chloride Disk, blood samples were collected for analyzed the level of hormone cortisol using an Enzyme-linked Immunosorbent Assay (ELISA) with a hormone kit merk Bioassay Technology Laboratory. Therefore, data on the sweating rate and cortisol hormone analyzed using descriptively by calculating the average and standard error. The result showed that in the morning (at 06.00 a.m.) the temperature outside the housing is lower and the humidity is higher than inside the housing; meanwhile, during the afternoon (at 14.00 p.m.) the temperature outside the housing is higher and the humidity is lower than inside the housing. The sweating rate ranged from 82.96±4.63–112.77±12.38 g/cm2/hours, and the cortisol level ranged from 20.07±7.05–34.74±10.23 ng/dL It was concluded that several beef cattle breeds raised in BCRI have normal conditions based on sweating rate and cortisol hormone level, this showed that PO, Madura, Jabres, Galekan, Rambon, Bali, POBA, BB x PO have good adaptability to the BCRS environment. [ABSTRACT FROM AUTHOR] |
