A study had been conducted to find out nutrient digestion and body weight gain of Balinese cows getting a basic ration of spear grass and Rosewood leaves supplemented with Falcata tree leaves. The study was using complete randomized block design with 4 ration treatments and 3 times repetition. Each repetition was using three Balinese cows. The weights of cows being used were in the range of 83-181 kg. Basic ration being given was arranged based on the percentage of dry ingredients namely: 80% of spear grass + 20% of rosewood leaves (A), 80% of spear grass + 20% of rosewood leaves + 10% of falcata tree leaves (B), 80% of spear grass + 20% of rosewood leaves + 15% of falcata tree leaves (C), and 80% of spear grass + 20% of rosewood leaves + 20% of falcata tree leaves (D), The variables being measured were: nutrient digestion and body weight gain. The result of the study showed that with the administration of 20% falcata tree leaves in the basic ration, it differed significantly (P<0.05) in increasing nutrient digestion and daily weight gain. The result of the study concluded that with the administration of falcata tree leaves in the basic ration of spear grass and rosewood leaves capable to increase nutrient digestion so that bacteria would optimally increase the utilization of fodder and led to a high weight gain of Balinese cows.

The study had been conducted to find out the growth of Balinese cows which getting basic ration of spear grass (Heteropogoncontortus) and Angsana leaf that had been supplemented with Silk tree leaf (Paraserianthes falcataria L.). The study was using complete randomized block design with 4 ration treatments and 3 times repetition. Each repetition was using three Balinese cows. The weight of cows being used were in the range of: 83-181 kg. Basic ration being given was arranged based on the percentage of dry ingredients namely: 80% of spear grass + 20% of Angsana leaf (A), 80% of spear grass + 20% of Angsana leaf + 10% of silk tree leaf (B), 80% of spear grass + 20% of Angsana leaf + 15% of silk tree leaf (C), and 80% of spear grass + 20% of Angsana leaf + 20% of silk tree leaf (D), The variables being measured were: dry ingredients consumption, nutrients consumption, body weight gain and Feed Conversion Ratio. The result of study showed that with administration of 20% of silk tree leaf in basic ration was significantly improving (P< 0.05) the consumption of dry ingredients and nutrient, and daily weight gain. The result of study concluded that with administration of silk tree leaf in basic ration of spear grass and Angsana leaf increased the growth of Balinese ox.