Produktivitas Sapi Jawa yang Diberi Pakan Basal Jerami Padi dengan Berbagai Level Konsentrat

This research was conducted to evaluate the productivity of Jawa cattle which was fattened using rice straw with various levels of concentrate. Twelve heads of Jabres bulls, two years old, with the initial body weight of 270,6 ± 38,03 kg (CV=14,06%) were used in this experiment. Those Jabres bulls were fed rice straw ad libitum and different level of concentrate that consisted of rice bran, copra meal, beer waste product, and minerals. Completely Randomized Block Design with 3 treatments and 4 blocks of different body weights were used in this study. The treatments were T1= 30% concentrate of the total DM requirements, T2= 50% concentrate of the total DM requirements, T3 = 70% concentrate of the total DM requirements. The collected data were dry matter intake (DMI), protein and total digestible nutrients (TDN) intake, dry matter digestibility, the average daily gain (ADG), and feed conversion ratio (FCR). The results showed that different level of concentrate did not influence the DMI, CP and TDN intake, and also dry matter digestibility (P>0.05). The average of DMI, CP, and TDN intake were 5.69 kg, 0.78 kg, and 3,95 kg/head/day respectively. The average of dry matter digestibility was 52.94%. The ADG was 0.53 kg and FCR was 12.80. The conclusion of this research was that the productivity of Jabres cattle fattened using rice straw and 30-70% concentrate were relatively the same