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Articles by Hafrijal Syandri
Total Records ( 10 ) for Hafrijal Syandri
  Hafrijal Syandri , Azrita and Ainul Mardiah
  Background and Objective: Aquaculture operations that use floating net cages have become one of the primary mean of intensive fish-culture in Lake Maninjau. The fish-culture species studied were Cyprinus carpio (C. carpio) (T1), Oreochromis niloticus (O. niloticus) (T2), Osphronemus goramy (O. goramy) (T3) and Clarias gariepinus (C. gariepinus) (T4). The objective of the research was to estimate the nitrogen (N) and phosphorus (P) loads into Lake Maninjau. Materials and Methods: The capacity of floating net cages was approximately 32 m3 (4×4×2 m) with densities of 32 fish m–3 in triplicate groups. Approximately 1,500 kg of feed was used in each cage during the experiment. The difference of N and P loads from different fish species were analyzed using one-way ANOVA (SPSS 16.0) computer software. Results: The total N loads into the water bodies from T1, T2, T3 and T4 were estimated at 37.93±2.59, 49.90±5.17, 45.90±4.18 and 20.35±4.12 kg t–1 of fish production, respectively. The P load was estimated to be 18.30±0.12, 20.01±0.99, 22.60±0.80 and 13.93±1.47 kg t–1 of fish production, respectively. Every ton of feed consumed by each fish species will contribute as much as 38.26±2.55, 35.68±1.69, 32.12± 0.39 and 48.99±2.35 kg N load into the water bodies, respectively. The P load was 11.45±2.43, 9.11±0.21, 8.34±0.04 and 12.51±0.30 kg, respectively. Conclusion: The C. gariepinus species is preferred for aquaculture operations at Lake Maninjau, because it minimizes N and P load releases into water bodies which can maintain sustainable aquaculture operations.
  Hafrijal Syandri , Elfiondri , Ainul Mardiah and Azrita
  Background and Objective: Maninjau lake is one of the priority lake in Indonesia who need to be save because it has an important economics value. The study was to survey the social status of Nile tilapia hatchery fish-farmers at Maninjau lake areas. Methodology: The purposive sampling was used in this study. The interview method using questionnaire form to obtain some information from 49 Nile tilapia fish-farmers in seven villages. The seven villages were divided into three areas which involved the aquaculture zone at Maninjau lake area. The data was analyzed using descriptive statistics method. Results: The majority of fish-farmer was male farmer (84.31%) with age ranged from 41-50 years old. Fish-farmer which has 4-6 person in a family was 46.93%. About 67.34% of fish-farmer has education level as senior high school graduate. Approximately 53.06% of annual income of Nile tilapia fish-farmers were above IDR 22000000. About 63.26% of fish-farmers activity was Nile tilapia aquiculture and rice agriculture. However, only 26.53% people working as Nile tilapia fish-farmers. About 77.55% of Nile tilapia fish-farmers got information to do Nile tilapia aquiculture from their friends and fellows farmers. About 36.37% of fish-farmer doing Nile tilapia hatchery due to business reasons. About 46.94% of fish-farmers obtained their brood stock from private hatchery. Meanwhile, about 91.83% of fish-farmers stated that poor quality brood stock as the major constraints of finger lings production. Conclusion: Nile tilapia hatchery activities at Maninjau lake plays an important role to increase Nile tilapia fish-farmers income.
  Netti Aryani , Ainul Mardiah , Azrita and Hafrijal Syandri
  Background and Objective: Bonylip barb (O. vittatus) is a freshwater fish which have economic value. This study was carried out to evaluate the effect of oil enriched commercial feed on the survival and growth of O. vittatus. Methodology: Feed enriched with 9% of Shark Liver Oil (SLO), Fish Oil (FO), Corn Oil (CO) and Soybean Oil (SO) which had total fatty acid were 68.18, 86.57, 48.19 and 31.16%, respectively. The addition of different source of fat had influence on fatty acid composition of feed. The O. vittatus fingerlings performance was evaluated based on the survival and growth parameter. Results: Feed enriched with CO and SO obtained the lowest survival rate. The enrichment commercial feed with SO also displayed the lowest of weight, total length and percentage weight gain. Specific rate growth of O. vittatus fingerlings was highest with feed enriched with FO and SLO, followed by feed enrichment with CO and SO. Meanwhile, feed enrichment with SO produced the highest feed conversion ratio. Conclusion: Feed enriched with 9% of FO is good for survival, growth and feed conversion ratio of O. vittatus fingerlings.
  Hafrijal Syandri , Azrita , Junaidi and Ainul Mardiah
  Background and Objective: Maninjau lake is one of the important locations for aquaculture activity for many local people in Indonesia. The objective of the current research was to estimate the Nitrogen (N), Phosphorus (P) and Total Organic Matter (TOM) before and after fish mass mortality in Maninjau lake. Materials and Methods: This research was conducted in February, 2017, four months after mass mortality occurred. Nile tilapia (Oreochromis niloticus) and Common carp (Cyprinus carpio) mortality were occurred in August and September, 2016. Data were collected from four stations on Maninjau lake (Muko-Muko, Pasa, Pandan and Sungai Tampang). Water samples were taken from the surface (depth 0.1 m) and under floating net cages (depth 30 m) at each station and analyzed for N, P and TOM content. Water quality data taken in February, 2016 was used as a comparison. The differences between N, P, TOM, Particulate Organic Matter (POM) and Dissolved Organic Matter (DOM) levels before and after fish mass mortality were analyzed using a student t-test. Any differences between stations were analyzed using one-way ANOVA was performed using SPSS computer software. Results: The levels of N and P before and after fish mass mortality were significantly different (p<0.05). The N levels at surface ranged from 1.83-2.30 mg L–1. At 30 m, N levels ranged from 2.11-2.60 mg L–1. The P levels ranged from 0.50-0.91 mg L–1 and 0.81-0.92 mg L–1 at 0.1 and 30 m depths, respectively. The N level tended to the limiting factor for algae growth at each station (all N/P<16). The TOM levels before and after fish mass mortality ranged from (Mean±SD) 4.55±0.02-16.33±0.01 mg L–1 and 6.97±0.72-19.04±0.04 mg L–1 at 0.10 and 30 m depths, respectively. Conclusion: The availability of N, P and TOM in the water was significantly higher (p<0.05) after fish mass mortality and had a negative effect on the water quality of Maninjau lake.
  Netti Aryani , Saberina Hasibuan , Ainul Mardiah and Hafrijal Syandri
  Background and Objective: Asian Catfish (Hemibagrus wyckii) is an important fish having both food and a high price in the market. These species are categorized as a carnivorous freshwater finfish native in Indonesia and is vulnerable to endangered status. This study was carried out to identify the morphometric characteristics of Hemibagrus wyckii (H. wyckii) from the Koto Panjang Reservoir, Kampar Kanan and Kampar Kiri rivers. Materials and Methods: Twenty-five fish were collected from each sampling site. The morphometric characteristics were analyzed using the truss morphometric method. Twenty-nine characteristics were measured to obtain the morphometric characteristics of this species. Morphometric data of H. wyckii were analyzed using one-way ANOVA (SPSS version 17.0). Principal component analysis (PCA) was used to evaluate the relationship between different factors and morphometric characteristics. The distribution across different habitats was measured by component canonical analysis (CCA) and genetic distance was analyzed by hierarchical cluster. Results: The average standard lengths of H. wyckii from the Koto Panjang Reservoir, Kampar Kanan and Kampar Kiri rivers (Mean±SD) were 428±15.78, 432.52±66.11 and 425.86±50.41 mm, respectively. Twenty-nine morphometric characteristics were measured. There was a 68.96% difference obtained in samples collected at the Koto Panjang Reservoir and Kampar Kanan river. There was a 95.55% difference obtained in the Koto Panjang Reservoir, Kampar Kiri river and a 100% difference obtained in the Kampar Kanan and Kampar Kiri rivers. The main differences in morphometric characteristics included inter orbital distance, length of adipose-fin base, predorsal length, length of front dorsal fin-front pelvic and depth of caudal peduncle. The Mahalanobis distance between fish from the Koto Panjang Reservoir and Kampar Kanan river demonstrated that both types originated from a single population. Conclusion: It was concluded that more favorable morphometric characteristics of H. wyckii were found in the Kampar Kanan river compared to those from the Koto Panjang Reservoir and Kampar Kiri river.
  Netti Aryani , Ainul Mardiah , Azrita and Hafrijal Syandri
  Background and Objective: Bonylip barb (Osteochilus vittatus) is an herbivorous freshwater fin-fish species native in Indonesia. These species has high demand and price in the market. A 90 days study was conducted to evaluate the effects of different stocking densities on growth, carcass composition, survival and water quality of Osteochilus vittatus (O. vittatus) in a synthetic sheet pond. Materials and Methods: Fingerlings with an average weight of 2.45±0.071 g (Mean±SD) were randomly stocked in 12 synthetic sheet ponds (2×1 m) at densities of 50 fish m–3 (T50), 75 fish m–3 (T75), 100 fish m–3 (T100) and 125 fish m–3 (T125) in triplicate groups. One-way ANOVA followed by Duncan’s new multiple range test was used to analyze obtained data a significance level of p<0.05. Results: After 90 days of the trial, the growth in terms of weight gain (WG) and specific growth rate (SGR) of fish from T50 were significantly higher than those from T75, T100 and T125. The feed conversion ratio (FCR) was significantly lower in T50 followed by T75, T100 and T125 consecutively. Protein efficiency ratio (PER) was higher in T50 followed by T75, T100 and T125 consecutively. The survival rate (SR) of the fish from T50 was significantly higher than that of the fish from T75, T100 and T125. Significantly lower amounts of carcass lipid and carbohydrate contents were found in T125 compared to the contents of the T50, T75 and T100 fish. Conclusions: Based on the growth performance and feed efficiency, the T50 fish m–3 of O. vittatus in a synthetic sheet pond may be technically feasible.
  Azrita and Hafrijal Syandri
  Background and Objective: Gurami Sago Osphronemus goramy (O. goramy) are an herbivorous freshwater finfish species native in Indonesia. This species has not yet been cultured commercially in brackish water. A 60-days study was conducted to evaluate the effects of salinity on survival and growth of O. goramy. Materials and Methods: Two independent experiments were performed to determine the effects of salinity on survival and growth of juvenile O. goramy, first one was to determine the median lethal salinity (MLS-5096 h) and second one was to assess the survival and growth at different sub-lethal salinities. In MLS-5096 h study 0.0, 4.0, 8.0, 12.0 and 16.0 ppt salinities were used to initially find out the salinity tolerance range. Accordingly, a definitive salinity tolerance test was done in next phase to find out exact median lethal salinity by directly transferring the test species to 13.0, 14.0, 15.0 and 16.0 ppt salinity for 96 h. The median lethal salinity of O. goramy was estimated at 14.0 ppt. In the second experiment, survival and growth of the O. goramy were recorded at salinities 4.0, 8.0 and 12.0 ppt along with 0.0 ppt as control during 60 days. Results: Osigni goramy exhibited lowest final average weight at 12.0 ppt salinity and significantly highest at 4.0 ppt salinity. Highest SGR and weight gain were obtained at 4.0 ppt followed by 0 ppt, 8 ppt and 12 ppt salinity. All treatments were significantly (p<0.05). Survival rate of O. goramy varied between 76.45% (at 0.0 ppt) and 66.66% (at 12.0 ppt). Conclusion: The O. goramy grew and survived satisfactorily at 0.0 to12.0 ppt salinities, implying that the species can be cultured commercially in brackish water, in view of in Indonesia, there are many abandoned shrimp ponds.
  Netti Aryani , Indra Suharman , Ainul Mardiah and Hafrijal Syandri
  Background and Objective: Feed level is an important factor that affects oocyte maturation of female Hemibagrus wyckii broodstock. The aim of the study was to investigate the effect of different feed levels (700, 1,400 and 2,100 g lokan meat per day) on the reproductive performance of female broodfish (initial weight: 2.800±296 g and initial length: 353.2±55.5 mm). Materials and Methods: Four experimental and three replicate ponds were used to evaluate the reproductive performance of female broodfish. Broodfish fed formulated feed was used as a control. Five female broodfish were cultured in each pond. Female broodfish were fed lokan meat once a day at 17.00 pm during 120 days of the experiments. Results: The nutritional content of lokan meat (wet base) were 7.08% crude protein, 0.82% crude lipid, 2.44% carbohydrate, 0.29% crude ash and 89.37% moisture content. Feed levels significantly (p<0.05) affected final weight, oocyte maturation, egg size, percentage of ovulation, number of egg per spawn, percentage of egg weight and embryo survival. Conclusion: Feed with 2,100 g lokan meat per day provided the best result for reproductive performance of female Hemibagrus wyckii broodfish.
  Niagara , Muhammad Agus Suprayudi , Mia Setiawati and Hafrijal Syandri
  Background and Objective: Bonylip barb Osteochilus vittatus (O. vittatus) is a freshwater fish with economic value. This study was conducted to evaluate the effect of protein levels and energy levels on the growth, feed efficiency and survival of O. vittatus fingerlings. Materials and Methods: A 3×2 factorial feeding trial was conducted to evaluate the production response of bonylip barb fingerling fish (O. vittatus). Six diets containing 3 protein levels (28, 30 and 32%) and 2 protein-energy ratios (12 and 14) were formulated and fed to triplicate groups of O. vittatus fingerlings (3.77±0.02 g/fish) for 60 days. The formulated diets were P28E12, P28E14, P30E12, P30E14, P32E12 and P32E14 (P-protein and E-energy). Results: Fish fed diets with the lowest protein and highest energy combination (P28E14) had the lowest growth performance. The percent weight gain, specific rate growth, feed conversion ratio, feed efficiency and protein efficiency ratio of O. vittatus fingerlings was highest with the 32% crude protein feed and a protein-energy ratio of 12 (P32E12). Meanwhile, the best fat retention was found in the P28E14 treatment. The protein retention and survival rate showed no significant effect (p>0.05) between treatments. Conclusion: Feed with 32% crude protein and a protein-energy ratio of 12 is good for growth, feed efficiency and survival of O. vittatus fingerlings.
  Hafrijal Syandri , Azrita and Ainul Mardiah
  Background and Objective: In Indonesia, Lake Maninjau is one of the most important locations for fish aquaculture operations that use floating net cages. The objective of this research was to determine the effect of different feed type on Growth, Feed Conversion Efficiency (FCE), Nitrogen (N) and Phosphorus (P) load caused by Cyprinus carpio. Methodology: Cyprinus carpio L. fingerlings (initial weight 56.79±1.77 g) were collected from a private hatchery in Rao Pasaman Regency. The study was conducted at two locations in Lake Maninjau (i.e. Farm I and Farm II). The farms consisted of three floating net cage units with floating and drowned feed. Each floating net cage had a capacity of 32 m3 (4×4×2 m) and individual stocking density of 60 m–3. Approximately 1,500 kg of feed was used in each floating net cage during the experiment. The differences in growth, N and P loads from the different feed types (floating and drowned feed) were analyzed using one-way ANOVA. Results: The different feed types had significant (p<0.05) effects on the weight gain, FCE, N and P load of Cyprinus carpio. The N load of floating and drowned feed from Farm I and II were 42.95±5.49, 39.31±0.64 and 51.69±12.61 kg, 39.17±0.60 kg t–1 of fish production, respectively. While, the P load of floating and drowned feed from Farm I and II were 18.85±1.63, 19.07±0.20 and 18.52±2.21 kg, 17.44±2.76 kg t–1 of fish production, respectively. Conclusion: Drowned feed is preferred for aquaculture activity in floating net cages in Lake Maninjau because it minimizes the eutrophication process, while also maintain sustainable aquaculture activity.
 
 
 
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