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1st Int. Transborder Conf. of the Timor Island: Timor %u2013 Science without borderDili, 7-8 May 202553Carcass Production and Economic Benefits of Slaughtering Cull Bali Cows at Different AgesS. Banamtuan, G. E. M. Malelak, M. Krova, I. Benu and I G. N. Jelantik*Department of Animal Husbandry, Faculty of Animal Science, Fishery and Marine Science, Kupang, Indonesia*Corresponding author: igustingurahjelantik@staf.undana.ac.idAbstractThe majority of beef demand in the Province of Nusa Tenggara Timur is sufficed by slaughtering cull Bali cows. However, there is lack of information regarding the best age to slaughter cull Bali cows producing highest carcass weight and economic return. This study aimed to evaluate the carcass yield and economic benefits of slaughtering cull Bali cows at different ages. A total of thirty cull Bali cows were categorized into three age groups: 2%u20134 years, >4%u20137 years, and >7%u201310 years, and were slaughtered at CV Aldia slaughterhouse. Live weight at slaughter, carcass weight, and non-carcass weight were recorded and analysed using analysis of variance (ANOVA). Economic returns were also compared across the age groups. The results showed no significant differences (P>0.05) in live weight or weight loss after 12 hours of fasting among the age groups. Similarly, carcass weight and dressing percentage did not differ significantly (P>0.05). However, younger cull cows had significantly higher non-carcass weights (P<0.01) than older cows. Slaughtering older cows (7%u201310 years) yielded the highest economic returns. In conclusion, although live weight and carcass production were similar across age groups, slaughtering older cull Bali cows is economically more advantageous.Keywords: cull Bali cows, age, slaughter, live weight, carcass, non-carcass, economic return.