Performans Induk Sapi Silangan Simmental – Peranakan Ongole dan Induk Sapi Peranakan Ongole dengan Pakan Hijauan dan Konsentrat (Performance of Simmental – Ongole Crossbred Cow and Ongole Crossbred Cow Fed with Forage and Concentrate Feed)

The purposed of the study was to identify performances of Simmental – Ongole Crossbred (SIMPO) cow and Ongole Crossbred (PO) cow fed with forage and concentrate feed. This experiment was carried out at Laboratory of Meat, Draught, and Companion Animals, Faculty of Animal Science, Universitas Gadjah Mada, Yogyakarta on May 16th to July 24th 2009. Six SIMPO cows with initial body weight of 352±47 kg and ten PO cows with initial body weight of 295±60 kg aged 3-4 years was used in the experiments. They were fed with elephant grasses and concentrate feds (60:40/DM basis) as much as 3% of body weight (DM basis). Data collected were dry matter, organic matter, crude protein and total digestible nutrients intakes, dry matter, organic matter, and crude protein digestibilities, body condition score and estrus cycles. Experimental design used was Completely Randomized Design (CRD). The data optained showed that feed intake of dry matter, organic matter, crude protein, and TDN on SIMPO were higher (P