ABSTRAKPenelitian bertujuan untuk mengkaji pengaruh ransum berbasis bagase dengan sinkronisasi pasokan energi dan nitrogen terhadap komposisi tubuh domba. Penelitian terdiri dari dua tahap. Tahap pertama menggunakan dua ekor domba ekor tipis jantan dewasa berfistula rumen bertujuan untuk menyusun tiga formulasi ransum perlakuan dengan indeks sinkroni yang berbeda. Ransum perlakuan diformulasikan dengan indeks sinkroni yang berbeda, masing-masing yaitu level indeks sinkroni 0,37; 0,50; 0,63. Penelitian tahap kedua bertujuan untuk mengkaji pengaruh pemberian ransum perlakuan yang diformulasikan pada tahap pertama terhadap komposisi tubuh domba dengan menggunakan lima belas ekor domba ekor tipis jantan. Ransum perlakuan juga diformulasikan secara isoenergi, isonitrogen dan isoNDF. Komposisi tubuh domba diukur pada minggu 0, 4 dan 8 periode perlakuan dengan metode urea space. Level indeks sinkroni tidak berpengaruh nyata terhadap konsumsi pakan, rasio asetat propionat dan konsentrasi glukosa darah, akan tetapi berpengaruh nyata (P<0,05) terhadap kecernaan bahan kering. Level indeks sinkroni yang berbeda tidak berpengaruh nyata terhadap persentase protein, lemak dan air tubuh meskipun bobot badan domba sedikit meningkat selama periode penelitian.Kata kunci :indeks sinkronisasi,bagase, komposisi tubuh, domba
ABSTRACTThe objective of this research was to study the effects of synchronization of carbohydrate and protein supply in sugarcane bagasse based ration on the body composition of sheep. The study was consisted of two steps of experiment. The first step of experiment used two rumen cannulated adult rams to create formulation of three diets with different synchronization index, namely 0.37; 0.50 and 0.63 respectively. The experimental diets were designed to be iso-energy, iso-nitrogenous and iso-neutral detergent fibre (iso-NDF). The second step of experiment was to determine the body composition of sheep fed the experimental diets, which were created in the first experiment. The body composition of fifteen rams were determined on week 0; 4; and 8 of experimental period, these were accomplished using the technique of urea dilution. The alteration of synchronization index did not affect on feed intake, ratio of ruminal acetate to propionate and serum glucose concentration, but dry matter (DM) digestibility was affected (P<0.05) by the treatment of synchronization index in the diet. The alteration of synchronization index in the diet did not affect on the percentage of body protein, fat and water significantly, though body weight of sheep gained slightly during the experimental period.