ABSTRAKTujuan penelitian ini adalah untuk menganalisis pengaruh tingkat penggunaan daun kabesak putih (Acacia leucophloea Roxb.) Willd. dalam pakan terhadap konsumsi, kecernaan pakan dan pertambahan bobot badan kambing Kacang. Rancangan Acak Kelompok dengan 5 perlakuan dan 5 ulangan digunakan dalam penelitian ini. Perlakuan tersebut berupa 5 pakan konsentrat yang masing-masing mengandung 0, 10, 20, 30, dan 40% daun kabesak putih berdasarkan bahan kering (BK) secara berturutturut sebagai perlakuan T 0 , T 1 , T 2 , T 3 , dan T 4 . Semua pakan dibuat dengan kandungan protein kasar (PK) berkisar 11,5-12,5%. Masing-masing pakan konsentrat diberikan pada 5 ekor kambing Kacang jantan (umur 1-1,5 tahun, berat badan awal 16,7±5,0 kg) ditambah rumput lapangan kering dengan imbangan 60:40. Hasil penelitian menunjukkan bahwa konsumsi BK, BO dan PK pada kambing yang diberi pakan T 0 tidak berbeda nyata dengan kambing yang diberi pakan T 1 tetapi lebih tinggi (P<0,05) dibanding pada kambing yang diberi pakan T 2 , T 3 dan T 4. . Kecernaan BK, BO, PK dan SK serta pertambahan bobot badan kambing yang diberi pakan T 2 secara nyata lebih tinggi dan mempunyai konversi pakan lebih baik (P<0,05) dibanding kambing dengan pakan perlakuan lain. penelitian ini adalah tingkat penggunaan daun kabesak putih yang paling optimal dalam pakan konsentrat adalah sebanyak 20% (T 2 ).Kata Kunci: pakan, konsentrat, suplemen, produktivitas, legium pohon ABSTRACTThis study was conducted to analysis the effect of levels of white kabesak (Acacia leucophloea Roxb.) Willd. leaves in the diet on feed intake, digestibility and body weight gain of Kacang goats. The completely randomized block design using 5 treatments and 5 replications was used in this experiment. The treatments were 5 concentrate feeds containing different levels of white kabesak leaves i.e. 0, 10, 20, 30 and 40% in the dry matter (DM) basis (representing T 0 , T 1 , T 2 , T 3 and T 4 treatments, respectively). The feeds were set up to contain 11.5-12.5% of crude protein (CP). Concentrate feed and native grass was fed at ratio of 60 : 40 was fed to 5 local male goats (age 1-1 .5 years old and initial weight of 16.7±5.0 kg). The results showed that DM, organic matter (OM), and CP intake of T 0 was not significantly different from those of T 1 goats, but it was significantly higher (P<0.05) than those of T 2 , T 3 and T 4 . The DM, OM, CP, and crude fiber (CF) digestibility as well as body weight gain in T 2 goats were significantly higher (P<0.05) and had feed conversion ratio that was significantly better (P<0.05) compared to those of the other feed treatments. In conclusion, the most optimum level of white kabesak (Acacia leucophloea Roxb.) Willd. leaves used in concentrate feed for goat was 20 %.

The purpose of this study was to evaluate dry matter loss, nitrogen fixation and dry matter and organic matter digestibility in vitro from the cooking product of pith Gewang with urea. The treatments applied consisted of cooking time (P) namely 0 hours (P0), 1 hour (P1) and 2 hours (P2) respectively, and the treatment of urea levels namely 0% (U0), 2% (U2) and 4% (U4) respectively, which were combined into 9 treatment combination units, to determine the dry matter loss and nitrogen fixation of the combined product. Determination of digestibility of dry matter and organic matter in vitro of the combined product is the combination of treatment of pith Gewang with urea before adding the control treatment, namely a combination of pith Gewang with urea level without cooking (p0). The research results showed that the dry matter loss of the combined product increased with an increase in the cooking time, but the increase in the urea level decreased the dry matter loss. Nitrogen fixation increased with an increase in the cooking time with urea level. Digestibility of dry matter and organic matter increases with an increase in the cooking time and urea level. It is concluded that, the cooking of pith Gewang with urea level resulted in the combined product that was low in dry matter loss and high in nitrogen fixation, dry matter and organic matter digestibility. Cooking time of 2 hours with urea level of 4 percent is the best combination in producing the combined product.

This study aims to determine the effect of the use of local microorganisms (moles) in the silage of cow rumen contents on the digestibility of dry matter, organic matter and total digestible nutrients (TDN) in vitro. The method used in this study was an experimental method using a complete randomized design (CRD) consisting of four treatments of four replicates. The treatment is P0 = 60% rumen contents + 35% rice bran + 5% sugar; P1 = P0 + 40 ml Mole; P2 = P0 + 80 ml Mole; P3 = P0 + 120 ml Mole. The variables measured were dry matter, organic matter digestibility and total digestible nutrient (TDN). The data were analyzed using Analysis of Variance (Anova) and if there were differences among the treatments with Duncan's range test. Statistical analysis show that there were significant difference (P<0.01) on dry matter and organic matter digestibility and total digestible nutrients (TDN). The conclusion showed that the use 40 ml of local microorganisms was the best level to increase dry and organic matter digestibility and total digestible nutrients.    Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan mikroorganisme lokal (mol) dalam silase isi rumen sapi terhadap kecernaan bahan kering, bahan organik dan total digestible nutrient (TDN) secara in vitro. Metode yang digunakan adalah metode eksperimen dengan menggunakan rancangan acak lengkap (RAL) terdiri dari 4 perlakuan 4 ulangan. Perlakuannya yaitu P0 = 60% isi rumen + 35% dedak + 5% gula; P1 = P0 + 40 ml Mol; P2 = P0 + 80 ml Mol; P3= P0 + 120 ml Mol. Variabel yang diukur adalah kecernaan bahan kering, bahan organik dan total digestible nutrient (TDN). Data dianalisis menggunakan Analysis of Variance (Anova) dan dilanjutkan dengan uji jarak berganda Duncan. Hasil analisis statistik menunjukkan perlakuan berpengaruh sangat nyata (P<0,01) terhadap kecernaan bahan kering, bahan organik dan total digestible nutrient (TDN). Hasil uji jarak bergandan Duncan menunjukkan perlakuan yang menggunakan mikroorganisme lokal (mol) berbeda sangat nyata dibandingkan dengan perlakuan kontrol. Disimpulkan bahwa penggunaan level mikroorganisme lokal pada silase isi rumen dapat meningkatkan KcBK, KcBO dan TDN. Perlakuan terbaik adalah penggunaan mikroorganisme lokal 40 ml.

The objective of this experiment was to evaluate replacement of soybean meal with corn mixed urea gelatinize product in concentrate as supplement of goats that supress nitrogen excretion and increase N metabolism. Sixteen Kacang goats (12.839±0.49 kg of live weight) were used in Completely randomized design with four treatments and four replication. The animals were randomly allocated to receive one of the following experiment diets Gliricidia + concentrate with ratio of soybean meal and product of gelatinize mixed corn-urea that: 1) 100:0 (P0), 2) 75:25 (P1), 3) 50:50 (P2) and 4) 25:75 (P3). Ration were formulated to contain 12% CP with ratio 60 % gliricidia and 40% concentrates. The result showed that total dry matter intake was significantly influenced of treatments and average of DMI each treatment was, P2 (467.99±2.19 g/h/d), P1 (441.20±2.10 g/h/d), P0 (440.08±2.29 g/h/d) and P3 (430.43±6.11 g/h/d). Dry matter and crude protein digestibility from each treatment was, P2 (76.45±0.39% and 80.63±0.37%), P1 (67.85±0.24% and 70.10±0.18%), P0 (67.85±0.74% and 70.68±0.42%) and P3 (60.62±0.41% and 61.96±0.69%). Treatment P2 highest than other treatments. Nitrogen retention and biological value significantly influenced of the treatment. Excretion of feces and urine lowest at P2  than P1, P0 and P3. N consumption, Total N Excretion and N digested not significantly influenced of the treatment but P2 better of other treatment. It could be concluded that 50% replacement soybean meal by product gelatinize of mixed corn-urea in concentrate has positive effects on nitrogen metabolism of Kacang goats.

This study examined the effect of the use of gliricidia leaves and papaya leaves in rations on the growth of kacang goats. The male Kacang goat, growth age (1 - 1.5 years) as many as 12 tails with an initial body weight of 13.55 ± 0.036 kg (BW ± standard error) were used as experimental animals. The experimental design used is a complete randomized design of factorial patterns 2 x 2 with two factors, namely, gliricidia leaf factor (A) with two levels of giving (a1 15% and a2 30%), papaya leaf factor (B) with two levels of giving (b1 5% and b2 10%) so that 4 treatment combinations are formed. The combination of treatments is, a1b1, a1b2, a2b1 and a2b2. The treatment was repeated 3 times to form 12 experimental units. The parameters tested were the consumption and digesting of dry matter as well as ration nutrients, weight gain and efficiency of ration use. The data was analyzed using analysis of variance (ANOVA) and followed by the Duncan test to compare between treatments. The results showed that there was no significant interaction (P >0.05) on all the parameters measured. The response of goat to parameters is more influenced by the single effect of gliricidia leaves and papaya leaves. The response to the use of gliricidia leaves is 30% and papaya leaves are 10% higher than the level of use below. It was concluded that the use of gliricidia leaves and papaya leaves can increase goat growth but the combination has not provided a significant interaction for it requires further study with a combination of higher levels.