Field grass was a source of ruminant forage, especially for rural farmers in  the West Java in different altitude. The aim of this study was to determine the potential of grass during  the dry season which included the botanical composition analysis and chemical analysis of nutritional value. The study was conducted from September to November 2015. The method used was a survey method, sampling was multistage sampling. The parameters measured in the study included a botanical composition of the forage, biomass production of feed materials on fresh and dry matter, dry material content, an inorganic material included ash, calcium and phosphorus, protein, crude fiber, extract materials without nitrogen, and crude fat. The results showed that the areas in  the West Java were drought in September and October, thus resulting in very limited supply of forage and the productivity of the forages was very low. A botanical composition in the highland area was more complete included grass, legumes and weeds than lowland areas and medium altitude. Forage production in highland areas was higher than in lowland areas and medium altitude. Feed plants in the lowlands had a greater fiber content which was forming energy for plants, and lower crude protein when compared to highland

This research aimed to study the effect of protein and energy on Diet Use Efficiency of female Garut sheep. Four different treatments diets of different protein to TDN (energy) ration such as R1=11.53%:63.13%; R2=10.78%:70.06%; R3=13.54%:63.18%; and R4=13.67%:69.18% were allocated to 20 heads of female Garut sheep with 7-8 months old and average body weight 15.72 ± 1.33 kg. Completely randomized design was used and collected data was analyzed with Duncan's test. The results showed that highest diet use efficiency and protein consumption (P<0.05) were seen in R4 treatment, 13.09% and 94.04 g/day. Meanwhile, TDN consumption did not have any different among R4 (480.23 g/day), R2 (474.80 g/day), and R1 (446.77 g/day) but they were higher (P<0.05) than R3 (370.87 g/day). In other hand, TDN digestibility of R2 and R3 were higher than R1 and R3. In conclusion, protein to TDN ratio of 13.67%:69.18% resulted highest diet use efficiency.

ABSTRAKLimbah roti memiliki potensi sebagai pakan untuk domba, namun belum banyak diketahui dampaknya terhadap kecernaan. Penelitian bertujuan untuk menguji ransum yang mengandung limbah roti terhadap kecernaan pada domba. Dua puluh ekor domba lokal dengan bobot hidup 34,65±2,87 kg dialokasikan ke dalam 5 ransum perlakuan yang mengandung limbah roti sebanyak 0, 6, 12,18, dan 24%. Penelitian dilaksanakan secara eksmperimental dengan menggunakan rancangan acak lengkap. Data yang terkumpul dianalisis dengan sidik ragam. Hasil menunjukan bahwa penggunaan limbah roti sampai 24% dalam ransum tidak berpengaruh terhadap kecernaan protein kasar, lemak kasar, bahan kering dan bahan organik dengan nilai rataan berturut-turut 54,91%, 73,39%, 66,80% dan 69,86%. Kesimpulan, limbah roti dapat digunakan dalam ransum sampai 24% dan tidak menganggu kecernaan pada domba.Kata kunci: domba, kecernaan, limbah, ransum, rotiABSTRACTBread waste has potential as a feed for sheep, but not yet known the impact on digestibility. The research aims to test the ration containing bread waste on digestibility in sheep. Twenty local sheep with a body weight of 34.65 ± 2.87 kg were allocated into 5 treatment rations containing bread waste of 0, 6, 12.18, and 24%. The study was conducted experimentally using a completely randomized design. The data collected was analyzed by variance. The results showed that the use of bread waste up to 24% in the ration did not affect the digestibility of crude protein, crude fat, dry matter and organic matter with an average value of 54.91%, 73.39%, 66.80% and 69.86%. Conclusion, bread waste can be used in rations up to 24% and does not interfere with digestibility in sheep.Keywords: sheep, digestibility, waste, ration, bread

Bungkil Tengkawang merupakan limbah pengolahan biji Tengkawang menjadi minyak yang memiliki potensi sebagai pakan ruminansia. Penelitian bertujuan untuk mengevaluasi penggunaan bungkil Tengkawang dalam ransum sapi potong secara in vitro. Penelitian dilakukan secara eksperimental dengan menggunakan rancangan acak lengkap. Ransum terdiri atas 5 perlakuan penggunaan bungkil Tengkawang dalam ransum sapi potong, yaitu 0% (R1), 9,75% (R2), 19,64% (R3), 30,09% (R4), dan 40,08% (R5). Masing masing perlakuan diulang empat kali. Hasil menunjukkan bahwa penggunaan bungkil Tengkawang dalam ransum meningkatkan konsentrasi asam lemak terbang, N-NH3, kecernaan bahan kering dan kecernaan bahan organik (P<0,05). Konsentrasi dan kecernaan tertinggi diperoleh pada perlakuan R5 dengan nilai asam lemak terbang, N-NH3, kecernaan bahan kering dan kecernaan bahan organik berturut-turut 135,57 mM, 6,16 mM, 65,30%, dan 71,15%. Kesimpulan penggunaan bungkil Tengkawang dalam ransum sapi potong tidak mengganggu fermentabilitas dan kecernaan secara in vitro. Penggunaannya sampai 40,08% menghasilkan fermentabilitas dan kecernaan tertinggi.  Kata kunci: Bungkil Tengkawang, Fermentabilitas, In vitro, Kecernaan, Sapi potong

Penelitian bertujuan untuk mengukur efisiensi penggunaan ransum mengandung imbangan protein dan energi (Total Digestible Nutrients) pada domba Garut jantan periode pertumbuhan. Penelitian menggunakan metode eksperimental dengan Rancangan Acak lengkap. Perlakuan penelitian adalah pemberian ransum domba Garut jantan periode pertumbuhan mengandung imbangan protein (12 %, 14 %, dan 16 %) dengan TDN (60 % dan 65 %), setiap perlakuan diulang empat kali. Peubah yang diukur adalah jumlah konsumsi bahan kering ransum, pertambahan bobot badan, dan konversi ransum. Jumlah konsumsi bahan kering tertinggi diperoleh pada pemberian ransum dengan imbangan 12 % protein dan 60 % TDN, yaitu 973,26 g/ekor/hari, pertambahan bobot badan tertinggi diperoleh pada pemberian ransum dengan imbangan 16 % protein dan 65 % TDN, yaitu 114,28 g/ekor/hari, dan konversi ransum terbaik diperoleh pada pemberian ransum dengan imbangan 14 % protein dan 60 % TDN, yaitu 8,32. Hasil penelitian menunjukan bahwa ransum dengan imbangan 12 % -16 % protein dan 60 -65 % TDN memberikan pengaruh terhadap efisiensi penggunaan ransum, dan nilai efisiensi penggunaan ransum paling tinggi pada domba Garut jantan periode pertumbuhan diperoleh pada pemberian ransum dengan imbangan 14 % protein 60 % TDN. Kata Kunci : protein, energi, domba.