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1st Int. Transborder Conf. of the Timor Island: Timor %u2013 Science without borderDili, 7-8 May 202574Effect of Substituting Kume Grass Silage with Hydroponic Maize Fodder on Energy Utilization in Male Kacang GoatsJunarikin Sau, Imanuel Benu*, Twen O. Dami Dato, Tara Tiba NikolausDepartment of Animal Husbandry, Faculty of Animal Science, Fishery and Marine Science, Kupang, Indonesia*Corresponding author: imanuelbenu@staf.undana.ac.idAbstractThis study aimed to evaluate the effect of substituting Kume grass silage with hydroponic maize fodder on energy utilization in male Kacang goats. A Latin Square Design (LSD) was used, involving three male goats, each receiving three dietary treatments in a crossover sequence over three periods. Each period lasted 15 days, consisting of 10 days of adaptation and 5 days of data collection. The treatments tested were: FCG0 (70% Kume grass silage + 30% concentrate), FCG1 (35% Kume grass silage + 35% hydroponic maize fodder + 30% concentrate), and FCG2 (20% Kume grass silage + 50% hydroponic maize fodder + 30% concentrate). The results showed that substituting Kume grass silage with hydroponic maize fodder had no significant effect (P>0.05) on energy intake (3.63%u20135.17 MJ/day), energy digestibility (68.12%u201391.12%), digestible energy (DE), urinary energy (E_urin), methane energy (CH%u2084_E), or metabolizable energy (ME). It can be concluded that hydroponic maize fodder can be partially used as a substitute for Kume grass silage in the diet of male Kacang goats without reducing the efficiency of energy utilization, although it does not significantly improve energy utilization.Keywords: Kacang goats, hydroponic maize fodder, Kume grass silage, energy tilization, digestible energy, metabolizable energy.