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Articles by N. Jamarun
Total Records ( 6 ) for N. Jamarun
  Mardiati Zain , N. Jamarun and Zulkarnaini
  This study tried to make use the ample supply of rice straw as the source of roughage. An experiment was conducted to evaluate effect of phosphorus and sulphur supplementation in rations containing ammoniated rice straw in beef cattle diets. The experiment used in randomized block design with cattle of 90±5.63 kg live weight. The experiment diets composed of 50% rice straw and 50% concentrate. The treatment were A = 50%rice straw, previously treated with 4% urea B = A+5% cassava leaves, C = B+0.4% P, D = C + 0.45%S. Differences among treatment means were examined using Duncan multiple range test. The results showed that there were significant differences of the consumption of dry matter and organic matter, digestibility of dry and organic matter and daily gain between treatments. The results indicated that intake, digestibility and daily gain of diets contains ammoniated rice straw with P and S supplementation were significantly higher than the control diet (p<0.05). It is concluded that P and S supplementation is important to improve degradability and daily gain of rations contain rice straw ammoniated. The best result showed at treatment D where, dry matter intake was 3407 g day-1, organic matter intake was 3340 g day-1, digestibility of dry matter was 64% and digestibility of organic matter was 66.90% and daily weight gain was 610.25 g day-1.
  Mardiati Zain , N. Jamarun and Nurhaita
  In vitro studies were conducted to determine effect of supplementation various amount of sulfur (Ammonium sulphate) on fermentability and degradability of ammoniated rice straw. The in vitro experiment was carried out following the first stage of Tilley and Terry method. The treatments consisting of four levels of sulfur, were A = ammoniated Rice Straw (RS) (control), B = A + 0.15% Sulfur (S) supplement, C = A + 0.3% Sulfur supplement and D = A + 0.45% sulfur supplement on dry matter. Completely randomized design was used as the experimental design and differences among treatment means were examined using Duncan multiple range test. Variables measured were Ammonia (NH3) and Volatile Fatty Acid (VFA) concentrations, as fermentability indicators, as well as degradability indicators including degradability of Dry Matter (DM), Organic Matter (OM), Neutral Detergent Fibre (NDF), Acid Detergent Fibre (ADF) and cellulose. The results indicated that fermentability and degradability of diets consisting ammoniated RS with Sulfur supplementation were significantly higher than the control diet (p<0.05). It is concluded that sulfur supplementation is important to improve fermentability and degradability of rations containing ammoniated RS. The best level of sulfur supplementation is obtained at 0.3% on dry matter.
  R. Herawaty , N. Jamarun , M. Zain , Arnim and R.W.S. Ningrat
  The aim of this experiment was to study the effect of adding S. cerevisiae and leaf of L. leucocephala in diet rice straw-based of nutrients digestibility and body weight gain of cattle. The experiment was conducted in Ruminant Nutrition Laboratory of the Faculty of Animal Science, Andalas University, Padang. Experimental design used is a Latin Square Design (LSD) with four treatments and four periods. This experiment used 175.±10.53 kg male ongole crossbreed. The treatments were (A) grass+concentrates (B) rice straw+concentrates (C) was the treatment of B plus 0.5% S. cerevisiae and (D) was the treatment C+15% L. leucocephala. The results showed that the dry matter digestibility of treatment B (61.03%) were significantly lower than treatments A, C and D respectively (68.05, 63.01 and 68.15%) and supplementation of S. cerevisiae was able to improve nutrient digestibility and body weight gain of cattle but still low as compared to control (A). Addition of L. leucocephala in treatment D (850.7 g/day) was able to provide digestibility and body weight gain similar to the control ration (775.7 g/day). It can be concluded that the use of rice straw as a substitute for grass would give the same results with the grass when added 0.5% S. cerevisiae and 15% L. leucocephala.
  Arief , N. Jamarun and B. Satria
  The in-vitro characteristics of the rumen fluid of ettawa crossbred dairy goats was analyzed to determine the digestibility of range of feeds based on palm oil industry by-products. The research used completely randomized design (CRD) with 5 different ratios of Palm Kernel Cake (PKC) and Palm Oil Sludge (POS) as follows: A; (10% PKC+50% POS), B; (20% PKC+40% POS); C (30% PKC+30% POS; D (40% PKC+20% POS), E; (50% PKC+10% POS). The characteristics of rumen fluid that were measured were pH, Volatile Fatty Acid (VFA) and NH3-N and digestibility of Dry Materials (DDM) and Organic Materials (DOM) in-vitro. The in-vitro study was performed according to the method of Tilley and Terry (1983). The results showed that the measured characteristics of the rumen fluid were within normal limits with pH 6.87-6.94, VFA 102.40-133.62 mM and NH3-N 9:00-9.91 mM. The digestibility of Dry Matter (DDM) ranged from 40.13 to 45.52% and the digestibility of Organic Materials (DOM) ranged from 38.94 to 44.56%. Most of the parameters depended significantly on the ratio of PKC and POS.
  Heni Suryani , M. Zain , R.W.S. Ningrat and N. Jamarun
  This study was conducted to determine the effect of Direct Fed Microbial (DFM) supplementation on in vitro fermentability and degradability of ammoniated palm frond. DFM’s used were Saccharomyces cerevisiae (SC), Aspergillus oryzae (AO) and Bacillus amyloliquefaciens (BA). Palm frond previously treated with 6% urea. The treatments were of, P0 = ammoniated oil palm frond, P1 = P0+SC (1% DM), P2 = P0+AO (1% DM), P3 = P0+BA (1% DM), P4 = P0+SC+AO (1% DM), P5 = P0+SC+BA (1% DM), P6 = P0+AO+BA (1% DM), P7 = P0+SC+AO+BA (1% DM). Variables measured were Dry matter (DM) and Organic matter (OM) in vitro digestibility, concentration of Ammonia (NH3), Volatile Fatty Acid (VFA) and fluid ruminal pH values as fermentability indicators. Data were analyzed using analysis of variance (ANOVA) and difference among means were tested using LSD. The results showed that the supplementation of DFM were significantly (p<0.05) increased on digestibility of DM, OM, concentration of NH3-N and VFA. The treatment had no significant effect (p>0.05) on fluid ruminal pH values. Digestibility of DM and OM increased from 47.5% (without DFM) to 51.55% (with DFM), 48.89 to 52.41%. The concentration of NH3-N and VFA increased from 12.28 to 14.28 mM and 108.35 to 125.90 mM, respectively. The rumen pH with supplementation of DFM is relatively more stable. The results showed that SC was suitable to be used single or in combination with AO or BA, but the combination of SC+BA (P5) give the best results on digestibility of DM, OM, concentration of NH3-N and VFA.
  Heni Suryani , M. Zain , R.W.S. Ningrat and N. Jamarun
  Objective: The objectives of this study were to evaluate the effect of supplementation of an ammoniated palm frond-based diet with Direct-Fed Microbials (DFM) and Virgin Coconut Oil (VCO) on the in vivo methane production, Dry Matter Intake (DMI), Organic Matter Intake (OMI), Daily Gain (ADG) and nitrogen retention of Bali beef cattle. Materials and Methods: The DFMs used in this study were Saccharomyces cerevisiae (SC) and Bacillus amyloliquefaciens (BA) and the Virgin Coconut Oil (VCO) contained 51.95% C12:0. In a pilot study, 16 male Bali cattle were assigned treatments in a randomized complete block design. Cattle were fed a basal diet containing (dry matter basis) 40% ammoniated palm frond and 60% concentrate and the treatments were: a) control, b) SC 1% DM, c) SC 0.5% DM + BA 0.5% DM and d) SC 1% DM+VCO 2% DM. Data were analysed by analysis of variance (ANOVA) and differences among means were tested using Duncan’s multiple range test (DMRT). Results: The results showed that supplementation with SC, SC+BA, SC+VCO significantly (p<0.05) reduced DMI and OMI but that the treatments were also able to increase ADG by 0.63, 0.63 and 0.71 kg day–1, respectively. Supplementation with SC+VCO increased the feed efficiency and reduced methane gas production by up to 20.63% compared to the control and nitrogen retention tended to decrease with DFM and VCO supplementation. Conclusion: These results suggest that supplementation with SC+VCO generates the best results in Bali beef cattle growth performance, methane gas production and feed efficiency.
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