Browsing by Author "Syandri, Hafrijal"

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    Effects of Enrichment Commercial Feed with Different Fat Sources on Survival and Growth of Bonylip Barb (Osteochilus vittatus Cyprinidae) Fingerlings
    (2018-02-13) Aryani, Netti; Mardiah, Ainul; Azrita, Azrita; Syandri, Hafrijal
    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.
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    Influence of Feeding Rate on the Growth, Feed Efficiency and Carcass Composition of the Giant Gourami (Osphronemus goramy)
    (2018-02-13) Aryani, Netti; Azrita, Azrita; Mardiah, Ainul; Syandri, Hafrijal
    Aquaculture feeding rate is an important factor affecting the growth of giant gourami. The aims of the study were to investigate the effect of different feeding rates on the growth, and carcass composition of giant gourami (initial weight 14.17±0.15 g and length 9.88±1.11 cm). The nutrition content of the diet was a cross energy of 3,340.50 kcal/kg, made up of 30% crude protein, 7% crude lipid, 6% crude fiber, 12% ash, and 12% moisture as a percentage of fish body weight, with three replicates per treatment. Fish were fed three times per day at 09:00, 14:00, and 18:00. The experiment was carried out for 120 days. Each month, 30 fish were removed from each of the floating net cages to be measured and weighed. The biomass of fish was calculated, and the amount of feed was adjusted. The feeding rate significantly (p< 0.05) influenced the final fish weight, net weight gain (NWG), average daily growth (ADG), specific growth rate (SGR), and feed conversion ratio (FCR). The maximum growth of giant gourami was found at 6% feeding rate. However, the best feed conversion ratio (1.34±0.18) was obtained at the 4% feeding rate. The carcass composition (crude protein and crude lipid) of giant gourami with different feeding rates showed a significant increase (p<0.05) after 120 days of the experiment. Based on growth performance, feed efficiency, and carcass composition, a 6% feeding rate showed the best result for the growth of giant gourami in Maninjau Lake.
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    Karakteristik Populasi Dan Habitat Pemijahan Ikan Bilih (Mystacoleucus padangensis Blkr) Di Danau Singkarak, Sumatera Barat
    (2015-07-31) Syandri, Hafrijal; Aryani, Netti; Azrita
    Fish Bilih a native fish of Singkarak Lake, one of the world‘s species, important protected because it is endemic and has important economic value._Study of population characteristics and Bilih fish spawning areas on Singkarak Lake has done a series of studies in January and December 2010._The purpose of this study is to reveal the characteristics of spawning fish populations and and their ecosystem. The research proves that the size of mature female fish gonads Bilih range in size of 70-109 mm with a weight of 6.37 to 8.68 grams and males 70-89 mm and weighs 4.46 to 6.60 grams. Female fish to spawn more dominant on the size of 70-79 mm and males 60-69 mm. Percentage of female fish to spawn each research station ranged from 68.37 - 75.65% and males 73.39 - 78.31%._Bilih spawning fish populations by conducting migration from lakes to rivers, among others, into the river Sumpur,Paninggahan and Baing every day starting at 16:00 until 23:00 am with the amount of thousands of tail. Characteristics of spawning habitat with river flow velocity 10-15 m / sec, water depth of 20-40 cm, bottom substrate consists of gravel and karakal._Based on this, the fish are reotaksis Bilih is doing spawning afternoon until the evening with the stimulation current, the basic substrate of gravel and karakal
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    Loading and Distribution of Organic Materials in Maninjau Lake
    (2016-03-22) Syandri, Hafrijal; Azrita; Junaidi
    Maninjau Lake utilization for the development of fish farming system floating net (KJA) already exceeded the carrying capacity of the number KJA waters in 2012 as many as 15 860 plots are used to maintain tilapia and carp, so the impact of organic matter pollution load is high enough. Water quality research and loading of organic matter and its distribution has been carried out in Maninjau Lake in July 2013. Quality of the surface water dissolved oxygen at each station showed almost the same conditions ranged from 5.70 to 6.77 mg/L, except for dissolved oxygen at a depth of 15 meters ranged from 3.26 to 4.12 mg/L, pH ranged between 8-10, low brightness range between 1.2-2.0 meters and electrical conductivity ranges quite high ranging from 33.66 to 45.32 ms/cm. Total organic content (TOM) on Koto Malintang station at 19.94 mg/L, Koto Kaciek station at 16.69 mg/L, Bayur 9.32 mg/L, the station on the lake outlets Hydropower Intake of 9.35 mg/L and Sigiran station at 14.10 mg/L. TOM accumulation in Maninjau Lake was 10.59 mg /L or 53.10% of the incoming load of KJA. KJA organic load of waste since 2001-2012 in Maninjau Lake have accumulated as much as 167,790.91 tons per year as the average load 13982.57 tons.
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    Morphometric Characteristics of Asian Catfish, Hemibagrus wyckii (Bleeker, 1858) (Bagridae), from the Riau Province of Indonesia
    (2018-02-13) Aryani, Netti; Hasibuan, Saberina; Mardiah, Ainul; Syandri, Hafrijal
    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.
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    Reproductive Performance of Asian Catfish (Hemibagrus wyckii, Bleeker, 1858)-Preliminary Study
    (2018-02-13) Aryani, Netti; Indra, Suharman; Mardiah, Ainul; Syandri, Hafrijal
    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.
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    Trophic Status and Potential Production Estimates of Fish Littoral Waters Maninjau Lake West Sumatra
    (2016-03-30) Junaidi; Syandri, Hafrijal; Azrita; Basri, Yuneidi
    Tropics status is a picture of the fertility of the water, while fish production potential in an aquatic ecosystem is the ability of these waters to produce fish. Research on tropics status and estimates of fish production in littoral waters Maninjau was carried out in March and July 2013 with the purpose of the study to determine the tropics status of the lake littoral waters and fish production estimates. The results show that in March 2013 the value of the average phosphorus level was 418 ± 55.40 mg / L, water transparency 1.7 ± 0.35 meters, chlorophyll-a levels of 256 ± 0.38 mg / L in order to obtain the average value of the index status trophics of 76.61 ± 2.02 with the value of the trophic waters classified as severe. Meanwhile, in July 2013 the average value of 605 ± 4.79 Phosphorus levels ug / L, water transparency 1.3 ± 0.18 m, chlorophyll-a levels of 271.3 ± 2.65 mg / L in order to obtain the average value index of tropics status amounted to 78.62 ± 1.15 with the value of the trophics waters classified as severe. The estimated value of fish production in March 2013 by an average of 45.51 ± 2.81 kg / ha / year and in July 2013 an average of 44.99 ± 2.96 kg / ha / year