DETERMINATION OF ENERGY AND PROTEIN REQUIREMENTS AND THEIR RATIO IN THE RAMBON DUCKS RATION AT GROWING PERIOD

W. Tanwiriah, T. Widjastuti, I.Y. Asmara

Abstract
    Rambon Ducks are local laying ducks in Indonesia which are generally raised under extensive systems. However the decline of land availability, the duck rearing systems requires change from extensive to intensive systems. This study was aimed to determine the energy and protein requirement and their balance in the Rambon ducks ration at growing period. There were two experiments in the research. First to find the value of Efficiency Utilization of Protein (EUP) and requirement of energy and protein based the calculation from Scott et al. (1982), the second experiment to find energy-protein ratio (EPR) in the ration used Completely Randomized Design. There were six different metabolizable energy/protein ratio in rations as treatments; P1 (2200 kcal/kg/12%); P2 (2200 kcal/kg/14%); P3 (2500 kcal/kg/12%); P4 (2500 kcal/kg/14%); P5 (2800 kcal/kg/14%), and P6 (2800 kcal/kg/16%). Each treatment was replicated four times. The data was analyzed using analysis of variance and the difference among treatments was analyzed by Duncan Test. The parameters measured were EUP, Energy and protein requirement, EPR, feed consumption, body weight gain and feed conversion. The result of the research show that the value of EUV of Rambon female duck at growing period is 57.76%, requirement of protein is 10,62 g/day and energy is 199.73 kcal/day, feed consumption 91.8 g/day. The conclusion that Energy-Protein Ratio in the ration 2200 kcal/kg/12% P (183.33) is enough for Rambon Ducks at growing period

Key words: Rambon ducks, Efficiency Utilization of Protein, requirements, Energy, Protein, Energy-Protein Ratio, feed consumption, feed conversion