Pakistan Journal of Nutrition1680-51941994-7984Asian Network for Scientific Information10.3923/pjn.2016.1055.1060MawatiSri AdiAgung Purnomo Soedarsono Sunarso 1220161512Background: The development of sheep farming has a strategic role in efforts to fulfill protein requirements from animal-originated food. However, the farming of ruminants has environmental impacts on water, soil and air. The pollution from these impacts can be controlled externally and internally. Internal control is achieved through improvement in livestock production efficiency, which is possible with the provision of rations that supply protein of the quality and in the amounts appropriate to meet animal requirements and farming objectives. Objective: This study was conducted to increase productivity of sheep and control pollution impact by manipulating the energy-protein ratio of feed. Methodology: In an experiment, the six complete feed formula were fed to sheep with the following protein-energy ratios: 0.158, 0.166, 0.195, 0.198, 0.230 and 0.272. Feed was provided at 4% b.wt., twice a day, i.e., morning and afternoon. In rumen fluid, the following parameters of rumen fermentation were examined: pH, volatile fatty acids and NH3. Results: In all treatments, the pH of rumen fluid was higher before eating (0 h) than at 3 and 6 h post-feeding. Treatment with different protein-energy ratios of feed significantly affected the pH and VFA and NH3 content of the rumen fluid. Conclusion: The adjustment of the protein-energy ratio of feed can be used as a strategy to control pollution as the production of farming sheep increases. The decline in nitrogen pollution to the environment will reduce negative impacts on the environment damage, thereby improving the health of livestock farmers.]]>Mawati, S., S. Soedarsono, S. Sunarso and A. Purnomoadi,201347679Jarvis, S., N. Hutchings, F. Brentrup, J.E. Olesen and K.W. van de Hoek,20112011pp: 211-228pp: 211-228Orskov, E.R.,19922nd Edn.,Pages: 175Pages: 175McDonald, P., R.A. Edwards and J.F.D. Greenhalgh,19884th Edn.,Sauvant, D., E. Grenet and M. Doreau,19951995pp: 383-406pp: 383-406Widyobroto, B.P.,19921992Steel, R.G.D. and J.H. Torrie,19912nd Edn.,Miron, J., D. Ben-Ghedalia and M. Morrison,20018412941309Sung, H.G., Y. Kobayashi, J. Chang, A. Ha, I.H. Hwang and J.K. Ha,200720200207Kerley, M.S., G.C. Fahey Jr., L.L. Berger, N.R. Merchen and J.M. Gould,19877020782084De Veth, M.J. and E.S. Kolver,20018420662072Abubakr, A.R., A.R. Alimon, H. Yaakub, N. Abdullah and M. Ivan,201312147154Sharifi, M., M. Bashtani, A.A. Naserian and H. Khorasani,20131242024205van Soest, P.J.,19942nd Edn.,Pages: 476Pages: 476Nusi, M., R. Utomo and Suparno,20113519Owen, F.N. and A.L. Goetsch,19881988pp: 145-147pp: 145-147Baldwin, R.L. and S.C. Denham,19794916311637Javaid, A., Mahr-un-Nisa, M. Sarwar and M.A. Shahzad,2008Nili-ravi buffalo (Bubalus bubalis) bulls fed diets containing various levels of ruminally degradable protein.]]>215158Baumann, T.A., G.P. Lardy, J.S. Caton and V.L. Anderson,20048226672678Lestari, D.A., L. Abdullah and Despal,201538110117Sulistyowati, E., A. Sudarman, K.G. Wiryawan and T. Toharmat,2014In vitro goat fermentation of PUFA-diet supplemented with yeast and curcuma xanthorrhiza Roxb.]]>37175181Syapura, M.B. and W.A. Pratama,2013in-vitro with feces as inoculum source.]]>2013Parakkasi, A.,1990Egan, A.R. and M.J. Ulyatt,1980944756Arora, S.P.,1995Colmenero, J.J.O. and G.A. Broderick,20068917041712Hungate, R.E.,19661st Edn.,Pages: 553Pages: 553Ranjhan, S.K.,19812nd Edn.,Mayulu, H., M. Sunarso, M. Christiyanto and F. Ballo,201348691Djajanegara, A.,19831983Wallace, R.J.,19911991pp: 131-178pp: 131-178