The Balance of Energy and Protein Ratios in Three Types of Local Chickens During Growth Phases

There are various types of local chickens in Indonesia, including Sentul-Warso Chicken, Chicken Kampung-Unggul, and Chicken Local-Jimy. These chickens exhibit varying growth patterns and consequently require different nutrient balances. This research, conducted from February to April 2017 at the Test Farm, Faculty of Animal Husbandry, Universitas Padjadjaran, Sumedang, West Java, Indonesia, aimed to determine the optimal energy-protein balance for these local chicken breeds by measuring the Protein Efficiency Ratio (PER). The study utilized an experimental design with a completely randomized design, involving five different treatment rations with varied energy and protein levels, each repeated four times. Treatments included: R1 = ME 2750 kcal/kg and CP 15% (183:1); R2 = ME 2750 kcal/kg and CP 17% (162:1); R3 = ME 2750 kcal/kg and CP 19% (145:1); R4 = ME 2950 kcal/kg and CP 15% (197:1); and R5 = ME 2950 kcal/kg and CP 17% (174:1). Data were analyzed using variance analysis, and differences between treatments were evaluated using Duncan's multiple-range test. Results indicated that the optimal energy-protein balance for Chicken Sentul-Warso ranged between 162 and 197, for Chicken Kampung-Unggul at 183, and for Chicken Local-Jimy between 145 and 197. The PER for Sentul-Warso Chicken ranged from 1.96 to 2.25, for Chicken Kampung-Unggul from 1.65 to 2.20, and for Chicken Local-Jimy from 1.93 to 2.20.