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Articles by Hafil Abbas
Total Records ( 5 ) for Hafil Abbas
  Wizna , Yose Rizal , Hafil Abbas , Abdi Dharma and I.P. Kompiang
  An experiment was conducted to determine the effects of substitution of Bacillus amyloliquefaciens fermented tapioca by-products for some of corn meal in the diets on the performance of broilers and ducklings. 200 unsexed day old broiler chicks and 200 male day old ducklings were randomly allocated into 40 pens (teen chicks or duckling/pen). This experiment was arranged in a completely randomized design with five dietary treatments (0, 10,20, 30 and 40% for broilers and 0, 30, 40, 50 and 60% for ducklings) of fermented by-product tapioca in diets and four replications. Measured variables were those of feed consumption, average body weight gain, feed conversion and carcass percentage. Results of experiment indicated that feed consumption, average body weight gain, feed conversion and carcass percentage were not affected (p>0.05) by levels of Bacillus amyloliquefaciens fermented tapioca by-products in the diets for broilers. However average body weight gain was affected (p<0.05) and feed conversion were highly affected (p<0.01) by levels of Bacillus amyloliquefaciens fermented tapioca by-products in the diets for ducklings. Increasing levels of Bacillus amyloliquefaciens by products of tapioca up to 60% in diets of ducklings increased their body weight gain and reduced their feed conversion. In conclusion, Bacillus amyloliquefaciens- fermented tapioca by-products can be included up to 40% in diets (replace 67% corn meal) for broilers and up to 60% in diets for ducklings (replace 100% corn meal).
  Wizna , Hafil Abbas , Yose Rizal , Abdi Dharma and I. Putu Kompiang
  An experiment was conducted to improve the nutrient content of sago pith (Metroxylon sago Rottb) and rumen content mixture through fermentation by using cellulolytic bacteria (Bacillus amyloliquefaciens) as inoculums. The experiment was determination of the optimum conditions (dosage of inoculums, fermentation length and temperature) for sago pith and rumen content mixture fermentation based on nutrient quality and quantity of these fermented products. The study was conducted in experimental methods, using the completely randomize design in factorial with 3 treatment were : 1. A factor (Dosage of inoculums: A1 = 2%, A2 = 6%, A3 = !0%), 2. B factor (Fermentation length : B1 = 3 days, B2 = 6 days, B3 = 9 days) and 3. C factor (Temperature : C1 = 30oC, C2 = 40oC and C3 = 50oC). Results of study showed that optimum conditions of the fermentation of sago pith (Metroxylon sago Rottb) and rumen content mixture was at 2% dosage of inoculums, 9 days of fermentation length and 40oC temperature. This conditions can decrease 33% of crude fiber and increase 42% of crude protein which made the nutritional value of the product based on dry-substance was 15.79% crude protein, 2.75% crude fat, 18.54% crude fiber, 0.20% calcium, 0.16% phosphor, 2540 Kcal/kg metabolic energy, and 66.65% nitrogen retention.
  Wizna , Hafil Abbas , Yose Rizal , Abdi Dharma and I. Putu Kompiang
  An experiment was conducted to improve the nutrient content of tapioca by-products (onggok) through fermentation by using cellulolytic bacteria (Bacillus amyloliquefaciens) as inoculums. The experiment was determination of the optimum conditions (dosage of inoculums, fermentation length and temperature) for tapioca by-products (onggok) fermentation based on nutrient quality and quantity of these fermented products. The study was conducted in experimental methods, using the completely randomize design in factorial with 3 treatment were: 1) A factor (Dosage of inoculums: A1 = 2%, A2 = 6%, A3 = !0%), 2) B factor (Fermentation length: B1 = 3 days, B2 = 6 days, B3 = 9 days) and 3) C factor (Temperature: C1 = 30oC, C2 = 40oC, C3 = 50oC). Results of study showed that optimum conditions of the fermentation of tapioca by-products (onggok) was at 2% dosage of inoculums, 6 days of fermentation length and 40oC temperature. This conditions can decrease 32% of crude fiber and increase 360% of crude protein which made the nutritional value of the product based on dry-substance was 7.9% crude protein, 2.75% crude fat, 11.55% crude fiber, 0.26% calcium, 0.17% phosphor, 2190 Kcal/kg metabolic energy and 65.95% nitrogen retention.
  Wizna , Hafil Abbas , Yose Rizal , Ade Djulardi and Helmi Muis
  An experiment was conducted to improve the nutrient content of rice bran which supplemented with Zn, Sulfur and urea through fermentation by using cellulolytic bacteria (Bacillus amyloliquefaciens) as inoculums. The objective of this experiment was to study the effect of supplementation of catalytic substrate consisting of Zn, sulfur and urea on the substrata characteristics and its microbial population.The experiment was determination of the optimum conditions (dosage of Zn, Sulfur and urea) for rice bran fermentation based on nutrient quality and quantity of these fermented products. The study was conducted in experimental methods, using the completely randomize design in factorial with 3 treatments were : 1) A factor (Dose of urea: A1 = 1.0%, A2 = 1.5%, A3 = 2.0%), 2) B factor (Dose sulfur: B1 = 0.2%, B2 = 0.4%, B3 = 0.8%) and 3) C factor (Dose Zn: C1 = 0.0025%, C2 = 0.005%, C3 = 0.0075%). Results of study showed that optimum conditions of the fermentation of rice brand was at 2% urea, 0.0025% Zn and 0.2% sulfur. The protein level increased 100% and the mineral content 60%, accompanied by 8.2% of increase in the digestibility. The level of phytic acid decreased 97%. This conditions can increase 36% of metabolizable energy, 15% nitrogen retention, 98% crude fiber digestible.
  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.
 
 
 
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