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Articles by Yan Heryandi
Total Records ( 3 ) for Yan Heryandi
  Yan Heryandi , Adrizal , Nela Ningsih and Maria Endo Mahata
  Background and Objective: The utilization of pineapple peel waste as poultry feed is limited due to the high crude fiber content. The poultry digestive tract does not produce cellulase, a cellulose digesting enzyme, however, cellulolytic microorganisms produce cellulase that could be used in hydrolyzing high-cellulose feed content through a fermentation method. The previous experiment showed that crude fiber content in pineapple peel waste was reduced from 24-17.16% after fermenting for 1 week with a local microorganism solution derived from bamboo sprouts. Thus, this study aims to evaluate the amount of fermented pineapple peel waste, using a local microorganism solution derived from bamboo sprouts, that could be used in a broiler diet, as well as how it effects the carcass performance and organ development of broilers. Materials and Methods: This experiment was performed with a completely randomized design using five different amounts of fermented pineapple peel waste (0, 3, 6, 9 and 12%) in the broiler diet and each treatment was repeated four times. Body weight, abdominal fat pad percentage, carcass weight and percentage and organ development in relation to the liver, gizzard, spleen and duodenum weight were measured. Results: The inclusion of different amounts of fermented pineapple peel waste in the broiler diet did not significantly affect (p>0.05) the body weight, abdominal fat pad percentage, carcass weight and percentage, organ development, such as weight of the liver, gizzard, spleen and duodenum. Conclusion: Fermented pineapple peel waste using a cellulolytic local microorganism solution derived from bamboo sprouts could be used up to 12% in a broiler diet without negative effects on carcass performance and organ development.
  Nita Yessirita , Hafil Abbas , Yan Heryandi and Abdi Dharma
  Here we try to determine the effect of fermented leucaena leaf meal in the ration of Pitalah ducks. The research design used Randomized Completely Block of Design (RCBD) with 7 treatments, 3 replications and each replication consist of 6 laying duck. The treatment of this research were RO (control), R1 (10% leucaena leaf meal without fermentation), R2 (10% leucaena leaf meal fermented by Bacillus laterosporus), R3 (20% leucaena leaf meal fermented by Bacillus laterosporus), R4 (10% leucaena leaf meal fermented by Trichoderma viride), R5 (20% leucaena leaf meal fermented by Trichoderma viride), R6 (10% leucaena leaf meal fermented by Bacillus laterosporus+10% leucaena leaf meal fermented by Trichoderma viride). Parameter which are observed like: feed consumption, egg production, egg weight and feed conversion. The results showed that the ration treatment influenced different highly significant (p<0.01) for feed consumption, egg weight and egg mass ration treatment but influenced different significantly (p<0.05) on egg production and feed conversion treatment. The use of the product leucaena leaf fermentation with Trichoderma viride and Bacillus laterosporus as much as 20% in Pitalah ducks rations and R2 treatment increase feed consumption (897.47g/bird/week), egg production (59.66%), egg weight 56.23 g/grain, egg mass (234.86g/head/week) and feed conversion (3.58 for R6 treatment). Treatment ration (R2, R3, R4, R5 and R6) is better than control ration and can improve performance of Pitalah ducks.
  Adrizal , Yan Heryandi , Robi Amizar and Maria Endo Mahata
  Background and Objective: The utilization of pineapple waste as poultry feed is limited due to the high crude fiber and water contents and the low protein content. The crude fiber content in pineapple waste can be reduced by simple fermentation using local, naturally beneficial microorganism solutions, particularly cellulolytic microorganisms. Local microorganisms can be obtained from rice waste, bamboo sprouts, banana corms, mixed fruit waste and mixed vegetable waste. Thus, this study evaluated the nutrient content of pineapple waste, particularly crude fiber content, using submerged fermentation and different local microorganism solutions from rice waste, bamboo sprouts, banana corms, mixed fruit waste and mixed vegetable waste. Materials and Methods: This experiment was performed in a completely randomized design with two factors. The first factor was different local microorganism solutions and the second factor was the fermentation duration (1, 2 and 3 weeks). Each treatment was replicated twice. Total water, dry matter, crude protein, crude fiber, soluble protein and total sugar contents, as well as the cellulase activity were measured. Results: The results showed an association (p<0.05) between the different local microorganism solutions and the fermentation durations on the crude fiber, total sugar and soluble protein contents of the pineapple waste fermentation product. Cellulose activity in pineapple waste was significantly affected by the different local microorganism solutions and the fermentation duration and the different local microorganism solutions significantly affected the crude protein, water and dry matter contents (p<0.05). Conclusion: Higher total water and lower total dry matter contents of the pineapple waste fermentation product were detected using the local microorganism solution from bamboo sprouts and a higher total crude protein content were detected using the local microorganism solutions from rice waste, bamboo sprouts, mixed fruit waste and mixed vegetable waste, further a lower total crude fiber content was detected using the local microorganism solution from bamboo sprouts with a fermentation duration of 1, 2 and 3 weeks. A higher total sugar content was detected using the local microorganism solution from rice waste and a higher soluble protein content was detected using the local microorganism solution from rice waste with a fermentation duration of 1 week, using that from mixed fruit waste with a fermentation duration of 2 weeks and using that from bamboo sprouts with a fermentation duration of 3 weeks. A higher cellulase activity during pineapple waste fermentation was detected using the mixed local microorganism solutions from vegetable and mixed fruit waste. The local microorganism solution from bamboo sprouts and a fermentation duration of 1 week was the best combination for lowering the crude fiber content of pineapple waste.
 
 
 
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