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Articles by Siswanto Imam Santoso
Total Records ( 4 ) for Siswanto Imam Santoso
  Siswanto Imam Santoso and Agus Setiadi
  Salvinia molesta is an aquatic weed that can be found in swamps and lakes. The Central Java government is very interested in overcoming the infestation of Lake Rawa Pening by this aquatic weed. The present research was conducted from May until June 2014 at the Livestock and Poultry Laboratory of the Faculty of Animal and Agricultural Sciences of Diponegoro University in Semarang, Indonesia. The feed sample analysis was obtained from the Agricultural Extension College (STPP) of Magelang, Central Java. For this trial a flock of eighty Pengging ducks 4-week-old (male ducks) with an initial average weight of 734.25±0.52 g were used as the research subjects. Salvinia molesta was obtained from Lake Rawa Pening, and Aspergillus niger was obtained from the Agricultural Extension College (STTP Magelang). This research was carried out in two phases: the first phase consisted of the preparation, and the second phase consisted of the start, maintenance and completion of the study. A feed ration that contained fermented Salvinia molesta was used in the second phase. The ration composition of the starter and finisher periods was arranged with iso protein and energy. The addition of 15% Salvinia molesta to the local duck ration resulted in an increase in the body weight and feed conversion ratio (FCR), as well as increasing the income over feed cost (IOFC) by approximately IDR 2,468.65; this was the most efficient ration compared with the controlled ration and other rations.
  Siswanto Imam Santoso , Siti Susanti and Agus Setiadi
  Background and Objective: Salvinia molesta is an aquatic plant that grows well in Rawa Pening, Central Java, Indonesia but it is invasive and typically causes environmental problems. Therefore, the government of Central Java is interested in reducing Salvinia in Rawa Pening. Based on a laboratory analysis, Salvinia contains 32% crude protein; thus, it may be used as broiler chicken feed. However, Salvinia molesta has not commonly been used in this way in Indonesia. The aim of this study was to determine the profitability of using S. molesta leaf meal in the diets of male broiler chickens. Methodology: One hundred male broiler chickens were divided into the following 4 treatments with 5 replicates each and 5 male broilers were reared in each replicate: T0 (0% S. molesta in the diet), T1 (6% S. molesta), T2 (12% S. molesta) and T3 (18% S. molesta). Results: The body weights of the chickens fed T1 did not differ in comparison to T0 and the FCRs of the birds fed T2 and T3 were similar to those of the birds fed T0. The feed consumption was similar among all treatments and no deleterious effects were observed during the experiment. Among the treatments, the T3 birds exhibited the most profitability. Therefore, Salvinia molesta can be used as broiler chicken feed at up to 6% of the diet. Conclusion: Incorporating Salvinia molesta at up to 6% of the diet may reduce feeding costs and thus increase profit.
  Agus Setiadi , Siswanto Imam Santoso , Sumarsono , L.D. Mahfudz and A.B. Susanto
  We investigated the physical appearance and feed cost of kampung chickens whose feed was supplemented with 20% Azolla in commercial feed. The experiment was carried out with 15-day-old kampung chicks assigned to two treatments. One hundred birds were used in the study, with 50 birds assigned to treatment 1 (T1) and 50 birds assigned to treatment 2 (T2). Birds in T1 received a control diet consisting solely of commercial feed, with the diet containing 210 g/kg of crude protein. Birds in T2 received a diet that included 20% Azolla microphylla (AM) mixed in the ‘commercial diet’; this diet contained 200.4 g/kg of crude protein. The experiments were conducted over a period of 8 weeks. No differences were found in feed consumption and the final weight of the birds, but birds who were fed the T2 diet had a better feed conversion ratio (FCR) (p<0.05) than that of birds who were fed the T1 diet. No mortality of birds occurred during the experiment. Utilization of AM could reduce the costs of feed from IDR 7,000/kg to IDR 5,800/kg, while increasing income per bird from IDR 8,760 to IDR 11,834. In conclusion, utilization of 20% AM in the diet of kampung chickens reduces the feed cost, improves the FCR and increases the income per birds sold.
  Siswanto Imam Santoso , Bambang Mulyatno , Sudiyono Marzuki , Edjeng Suprijatna and Agus Setiadi
  Background and Objective: Eggs are common foods that are delicious and nutritious, but it had negative aspect of duck eggs that is their cholesterol content. One approach to improving the fat composition of eggs is feed supplementation. The study aimed to evaluate the effects of Salvinia-Brotia (SB) (at various percentages) as a duck feed supplement on the lipid composition (total cholesterol, LDL, HDL and triglyceride levels) of duck eggs. Materials and Methods: The study was carried out according to the guidelines for applied nutrition experiments in poultry. Starter periods of 120 birds 5 week-old Pengging ducks with an average body weight of 734.25±0.52 g were maintained until they were 12 weeks old. The animals were housed in groups under standard conditions in a 20-unit postal cage with 4 individuals/unit. The ducks were fed 3 times/day ad libitum with 2,800 kcal of a metabolic energy and 18% crude protein. Their fattening duration was 49 days. Individuals were chosen for the experiment by a completely randomized design with 4 treatment groups and 6 replicates: T0 (basal diet), T1 (10% SB), T2 (12.5% SB) and T3 (15% SB). Results: SB supplementation in feed for 8 weeks did not significantly affect the body weight or physical characteristics of duck eggs. The addition of 12.5% of SB (T2) lowered the cholesterol compared to the 10% treatment (T1), while this did not differ significantly with the addition of as much as 15% SB (T3). Furthermore, SB supplementation also significantly lowered the LDL content in egg yolks and the provision of 12.5% SB (T2) resulted in the lowest LDL and triglyceride content among the treatments, accompanied by increasing contents of HDL. Utilization of the weed Salvinia molesta and the weed’s waste water Brotia costula as a feed supplement can effectively improve the quality of local duck eggs. Conclusion: The incorporation of 12.5% Salvinia-Brotia (SB) gave the best results in the duck diets would reduce the total cholesterol, feed cost and finally could increase the income over feed cost.
 
 
 
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