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Articles by Wingki Ari Angga
Total Records ( 2 ) for Wingki Ari Angga
  Ahadiyah Yuniza , Tertia Delia Nova , Wingki Ari Angga , Annisa and Yose Rizal
  Background: The utilization of Cassava Leaf Meal (CLM) and Palm Kernel Cake (PKC) in poultry diet is still limited due the high in crude fiber and other anti-nutrition compounds. The processing of these 2 feedstuffs, such as fermentation by using microbes did not perform much improvement in their utilization in poultry diets. Fermentation of feedstuffs by using fungi took a longer time than by using bacteria such as Bacillus amyloliquefaciens . Fermentation of the combination of CLM and PKC could elicit the complementary effect in supporting the growth of bacteria. Objective: Thus, an experiment had been conducted to determine the effects of the combinations of CLM and PKC mixture fermented by Bacillus amyloliquefaciens on the alteration of their dry matter, crude protein, crude fiber and crude lipid contents and the best combination of CLM and PKC for fermentation. Materials and Methods: This experiment was performed in a completely randomized design with 5 treatments and 4 replicates. The treatments were the combination of CLM and PKC as follows: 100:0% (A), 80:20% (B), 60:40% (C), 40:60% (D) and 20:80% (E). These combinations of CLM and PKC were fermented by using Bacillus amyloliquefaciens at the dose of 6% for 6 days. Measured variables were the reduction percentage in dry matter, crude fiber and crude lipid and the increasing percentage in crude protein. Results: Results of experiment indicated that the combinations of CLM and PKC mixture very significantly affected (p<0.01) the reduction percentage in dry matter and crude fiber and increasing percentage in crude protein, as well as significantly influenced (p<0.05) the reduction percentage in crude lipid. Conclusion: The lower reduction percentage in dry matter was in treatments A and B, the higher increasing percentage in crude protein was in treatments B and C, the higher reduction percentage in crude fiber was in treatments D and E and the higher reduction percentage in crude lipid was in treatments A, B and C. It is concluded that the best combination of CLM and PKC fermented by Bacillus amyloliquefaciens was 80:20% (treatment B).
  Wingki Ari Angga , Yose Rizal , Maria Endo Mahata , Ahadiya Yuniza and Reni Mayerni
  Background and Objective: West Sumatra is the third largest tea-producing area in Indonesia. Tea plantations in this area produce top quality leaves that can be marketed both domestically and internationally. To maintain a high level of tea leaf productivity, plants should be pruned every 3 years using a rotation system that involves monthly prunings. These prunings produce waste tea leaves that can serve as alternative feed resource for poultry as they have good nutritional value. Tea leaves contain high concentrations of antioxidants, such as polyphenols and policosanol as well as minerals and vitamins, which are known to improve poultry health. Unfortunately, tea leaves also contain high levels of tannins and crude fiber-components known to be detrimental to poultry. This study was designed to evaluate the potential of waste tea leaves (Camellia sinensis) as poultry feed in West Sumatra by reducing their tannin content through immersion in fresh and hot water. Materials and Methods: This research consisted of two phases. The first phase was a survey of the potential of waste tea leaves as poultry feed through interviews and measurement of waste tea leaf production. The second phase was to experimentally process waste tea leaves through immersion in fresh and hot water. Variables measured during phase 1 included the size of tea plantations, ownerships, tea varieties produced, waste tea leaf production and estimated potential for poultry feed. The experiment conducted in phase 2 was performed using a completely randomized design involving 2×4 factorial arrangement of treatments with 4 replicates. The first experimental variable was water temperature (room temperature or 80°C). The second experimental variable was based on immersion at 6, 12, 18 or 24 h. Response variables measured included change in tannin content, dry matter (DM), organic matter (OM), crude protein (CP) and crude fiber (CF). Results: The results of the first phase indicated that the area of tea plantations in West Sumatra was 4,246.6 ha, ownership consisted of small holders (2,172 ha), the government (604.58 ha) and a private company (1,470 ha), total waste tea leaf production was 25,208.28 t/year, tea varieties or clones were Camellia sinensis assamica TRI 2024 and assamica TRI 2025 and waste tea leaves had the potential to feed 4,201,380,000 laying hens. The results of the second phase indicated that there was an interaction between water temperature and immersion duration on tannin reduction (p<0.05). Water temperature significantly influenced (p<0.01) reductions in OM and CP content and significantly affected (p<0.05) CF augmentation. Immersion duration significantly affected (p<0.05) DM reductions and highly significantly influenced (p<0.01) reductions in OM and CP. Conclusion: Waste tea leaves can be immersed in hot water (80°C) for 12 h to reduce their tannin content without affecting their protein content.
 
 
 
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