RETENSI NITROGEN DAN ENERGI METABOLIS RANSUM PADA AYAM BROILER YANG MENGGUNAKAN TEPUNG SORGUM (Sorghum bicolor (L). moench) SEBAGAI PENGGANTI JAGUNG

NITROGEN RETENTION AND METABOLIC ENERGY OF BROILER CHICKEN RATION USING SORGHUM MEAL (Sorghum bicolor (L). moench) AS A SUBSTITUTE FOR CORN. The aims of this study was to determine the value of Nitrogen Rretention (RN) and Nitrogen-Corrected Metabolic Energy (AMEn) rations using sorghum meal as a substitute for corn in broiler chickens. The study was carried out using 20 broiler strain Cobb aged six weeks consisting of six preliminary days and four days of data collection. Completely Randomized Design (CRD) was used which is consisting of five treatments and four replications. The treatments used are: R0 = substitute 100% corn or sorghum 0%, R1 = substitute 25% corn or sorghum 12.5%, R2 = substitute 50% corn or sorghum 25%, R3 = substitute 75% corn or sorghum 37.5%, and R4 = substitute 100% corn orsorghum 50%. The variables observed were the Nitrogen Retention value (RN) and Nitrogen Corrected Metabolic Energy (AMEn). Study showed that RN value of R0 (63.38%), R1 (65.69%), R2 (70.76%), R3 (70.77%), R4 (68.03%) and AMEn R0 (2417 , 14 Kkl / kg), R1 (2331.17 Kkl / kg), R2 (2157.87 Kkl / kg), R3 (2261.17 Kkl / kg) R4 (2290.02 Kkl / kg). he treatment gave no significant effect (P> 0.05) on RN value and AMEn. Based on this study it can be concluded that sorghum flour can replace corn to 100% or use 50% in broiler ration seen from the N retention value (68.03%) and AMEn value (2290.02 Kkl / kg).Keywords :     Broiler chicken, corn, metabolic energy, nitrogen retention, sorghum