Abstract:
THE METABOLIZABLE ENERGY OF RICE BRAN AS MEASURED WITH NATIVE AND A MODERN STRAIN OF CHICKEN Yusri M. Yusuf* and Ali Wibowo* Rice bran is a single ingredient that is usually fed to chickens ownd by small farmers in rural areas. Many experiences in the field indicate that native chickens have a better ability to survive co-red to modern strains under these conditions. This ability has raised questions as to whether there are any differences concerning the rrdxbolism of nutrients in rice bran, between native and xmdem types of birds. An experiment was designed to examine their ability to utilize energy in rice bran, by measuring metabolizable energy of rice bran with the tm different types of birds. The metabolizable energy @IE) measurements were conducted using the method proposed by Matterson et al. (1965) I with 20% and 30% substitution levels of rice bran. The nativeT&dern layer strain of chickens used wre nine weeks of age. Table. ME (kcal/kg) of rice bran measured with native and I&em layer type chickens No statistical differences were seen in ME values due to breed or substitution level within each experiment, Body weight gain during the four week experimental period indicated that the modern type of bird grew significantly better than native bird being 418 g and 357 g respectively, with a similar feed conversion ratio of 3.82 and 3.88. The results of this study support the contention that the reduced ability of the modern type of bird to survive in an extensive system is not caused by a reduced ability to utilize dietary energy. w, L.D., PA!ImN, L.M., SIVZ, M.W., and SINGSEN, E.P. (1965). The metabolisable energy of feed ingredients for chicks. Corm. Asr. Exp. Sta. Res. Report 7, pp 3-11. Yogpkarta, Indonesia *Fakultas Peternakan, Universitas Gadjah Mada, Jl. Agro-Karangmalang, 3A
