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Articles by R. Herawaty
Total Records ( 6 ) for R. Herawaty
  Erman Syahruddin , R. Herawaty and Azhar
  This study aims to determine the levels of fermented rubber leaves and seeds that can be used to substitute 100% of the soybean meal in native laying hen rations without adverse effects on laying hen production. Two hundred and forty laying hens aged 20 weeks were used in this experiment. The completely randomized design assigned six treatments to replace 0, 20, 40, 60, 80 or 100% of soybean meal with fermented rubber leaves and seeds in four replicate experiments. The variables measured were feed intake, feed conversion and income over feed cost (gross profit) as well as variables related to egg production (hen day production and egg weight) and egg quality (the thickness of eggshells and the yolk color index). Data were analyzed statistically using ANOVAs and if the results showed significance, Duncan's Test (DMRT) was used. The results showed that the performance of laying hens was not affected significantly by substituting soybean meal with fermented rubber leaves and seeds. Feed intake, feed conversion and egg production were not influenced either. In summary, fermented rubber leaves and seeds can substitute for 100% of the soybean meal in the rations of laying hens.
  Erman Syahruddin , R. Herawaty and Azhar
  Objective: This study aimed to determine the production performance and cholesterol content of Pitalah ducks fed a diet in which soybean meal had been replaced with rubber tree leaves and seeds fermented with the fungus Trichoderma spiralis. Methodology: A 12 week field trial was performed using 480, 1 day old Pitalah ducklings that were maintained in colonies in wire cages. Each unit was equipped with a feed enclosure, water and an incandescent light source. This randomized study was performed with 6 treatments, 4 replicates and 20 ducklings per box. The data were analyzed by ANOVA and differences among treatment groups were analyzed with Duncan’s multiple range test. The treatments included a control diet and diets in which a percentage of the soybean meal (20, 40, 60, 80 and 100%) was replaced with fermented leaves and seeds of the rubber tree (FLSRT). The variables measured were feed consumption, body weight gain, feed conversion, carcass percentage, income over feed cost and carcass cholesterol content. Results: Broiler production factors, such as feed intake, body weight gain, feed conversion, carcass percentage, income over feed cost and carcass cholesterol content, were not markedly affected by the inclusion of up to 80% FLSRT in livestock rations. Conclusion: Up to 80% of the soybean meal in Pitalah duck rations can be replaced with FLSRT.
  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.
  Erman Syahruddin , R. Herawaty and R.W.S. Ningrat
  Chicken meat is very nutritious. It is sometimes blamed to cause stroke attack and coronary heart disease in human, because of high fat and cholesterol contents in the chicken meat. Therefore, the aim of this experiment is to evaluate the effect of fermented katuk leaf levels in diets on the cholesterol content of broiler chicken carcass. The experiment was based on completely randomized design with eight experimental diets containing 0, 2, 4, 6, 8, 10,12 and 14% of fermented katuk leaf. All diets were formulated to contain 21% crude protein and 3200 kcal/kg. Each treatment had three replicates with ten chickens per replicate. Two hundred and forty day old unsexed Lohmann broiler chicks were fed ad lib for eight weeks and then slaughtered. Feed consumption, body weight gain, feed conversion ratio and cholesterol content of carcass were taken as variable responses. Data were analyzed based on analysis of variance and orthogonal comparisons. Results showed that feed consumption, daily weight gain, FCR and carcass content were not affected by the levels of fermented katuk leaf in the diet. However, cholesterol content of broiler carcass was significantly (p<0.05) affected by the dietary treatments. Cholesterol content of the carcass was reduced processed 19.32% 72.48 to 58.48 mg/100 g chicken meat. The lowest cholesterol level was obtained by feeding the chickens with diets containing 14% fermented katuk leaf.
  Erman Syahruddin , R. Herawaty and R.W.S. Ningrat
  This study aims to determine the level of use of the leaves and seeds of the rubber fermentation (DBKF) as a 100% replacement for soybean meal in the ration of broiler chickens that do not interfere with the performance of broiler chickens. The study consisted of a series of field experiments. Experiments in the field/cage to test the response of biological production (percentage of body weight gain and carcass) and gross profit in broiler chickens aged 1 day as many as two hundred and forty tail Arbor Strain acres. The draft completely randomized design with six treatment is replacement of 0, 20, 40, 60, 80 and 100% of soybean meal protein in leaves and rubber seed fermentation and 4 replicates with 10 chickens for each box. Data were analyzed statistically using ANOVA and if it shows a marked influence followed by Duncans test/DMRT. Variables measured were feed intake, body weight gain, feed conversion, carcass percentage and income over feed cost (IOFC) of broiler chickens. The results showed that the production performance of broiler chickens mainly on feed intake, weight gain and feed conversion is not too much affected by the use of rubber seed leaves and fermentation (DBKF) in cattle rations. Soybean meal protein replacement level with leaves and rubber seed fermentation (DBKF) in the ration can be done up to 80% in broiler rations.
  Erman Syahruddin , R. Herawaty and Azhar
  Objective: This study aims to determine the ability of some microbes to reduce the nutrients and crude fiber from the leaves and seeds of the rubber tree (Hevea brasilliensis) at various temperatures after a long fermentation. Methodology: This study was a laboratory experiment to measure the effects of multiple microbial fermentation times and temperatures on the nutrient content of the leaves and seeds of the rubber tree. The design used was a completely randomized 3×3×3 factorial design. The first factor is the type of microbe (Trichoderma spiralis, Rhizopus oligosporus and Neurospora sitophila). The second factor is the temperature (24, 34 and 44°C). The third factor is the fermentation time (2, 5 and 8 days). The best of the substrate proximate in the inoculum is then analyzed and calculated to determine the metabolizable energy and protein. Results: The nutrients of the leaves and seeds were compared after processing via rubber processing technology using fermentation with Trichoderma with other treatments and without fermentation. Conclusion: The quality of its nutritional value can be improved, namely, through an increase in the crude protein content of 60.67%, amounting to 32.58% nitrogen retention and 36.67% energy metabolism and a decline in the crude fiber content of 39.02%.
 
 
 
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