Usman M Tang, Usman
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ANALISIS DAN STRATEGI PENGELOLAAN HUTAN TANAMAN INDUSTRI DI AREAL PT. SATRIA PERKASA AGUNG Az Zahrawani, Rika; M Tang, Usman
Jurnal Ilmu Lingkungan Vol 9, No 2 (2015)
Publisher : Jurnal Ilmu Lingkungan

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ABSTRACTThis study aimed to determine changes in the characteristics fisika aspects, chemical and biological propertiesof peat soil as a result of the activities of industrial timber estates at differentages, namely land use HTI age of 3 years, HTIHTI aged 4 years and 5 years of age and strategize Industrial Plantation Forest management. The results showed physical changes due to peatland conversion into Industrial Plantation Forestisan increase in the value of bulk density, particle density, water levels, chemical changes due to peatland conversion into Industrial Plantation Forestisan increase in the pH value and the content of C-organic, biological changes due to peatland conversion into Industrial Plantation Forestisa decrease inthe number of microbes. Results of the analysis strategy SWOTPT. Satria Agung Perkasa is inquadrant 1, with rekomedasi strategy, namely: Increase the commitment of all stakeholders in the management of peatland in accordance with prevailing regulations, Organize and manage the optimal conditions of water management, Invites all parties to be more concerned about the environmental impact monitoring peatland, Campaign on the importance of the role and maintain the condition of peat, and to promote the importance of the role and maintain the condition of peat.Key word : strategy, management, timber industry
Color Brightness Enhancement in Komet Fish (Carassius auratus) By Giving Different Carrot Flour Doses Nurrahma, Nurrahma; Mulyadi, Mulyadi; M Tang, Usman
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT This study aims to determine of this the best dose of carrot flourin increasing the brightness ofcolorCarassiusauratus. The method ofthis research was using the experimental method with Completely Randomized Design(CRD) by using one factor of 4 treatment levels and 3 replications. The treatments each dose of carrot flour were using0% (control), 5%, 7% and 9%. The fry size was around 3-4 cmthen reared in the aquarium by 15 L of water and 10 fishes ofstocking density each aquarium. The fish were reared for 40 days, three times a day of feeding frequency. The results showed that thebest treatment wasP4 dose of carrot flour 9%by giving absolute thebest color brightness with value 11,73, weight growth for 1.59 g, absolutelongevity for 1.57 cmand fish survival for 100%. The conclusion is different dose of carrot flour significantly affect the color brightnessandgrowth performance ofCarassiusauratus. Keywords: Daucus sp.; Color quality;Growth;Carassiusauratus.
Growth and Survival Rate of Maanvis Fish (Pterophyllum scalare) With Different Feed Combinations Cahyani, Indri Ika; M Tang, Usman; Mulyadi, Mulyadi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACTThis study aims to determine the combination of natural food with the best artificial feed for growth and survival of maanvis fish (Pterophyllumscalare). The method of this research was using the experimental method with Completely Randomized Design (CRD) by using one factor of 5 treatment levels and 3 replications. The combination of feed in treatment is: 1: 100% Tubifexsp, 2: 75% Tubifex sp. + 25% pellets, 3: 50% Tubifex sp. + 50% pellets, 4: 25% Tubifex sp. + 75% pellets, and 5: 100% pellets. The fry size was around 2-4 cm and weight was 1,32 g then reared in the aquarium by 10 L of water and 10 fishes of stocking density each aquarium. The fish were reared for 40 days and feed is given as much as 10% of biomass weight, e times a day of feeding frequency.Parameters observed included absolute length and weight growth, specific growth rates, survival rates and water quality. The results showed that the best treatment was 100% Tubifexsp by giving absolute weight growth for 1,76 g, absolute longevity for 2,06 cm, specific growth rate for 1.91% and fish survival for 98%. The conclusion is different types of natural diets significantly affect the growth performance, and survival rate of maanvis fish (Pterophyllumscalare). Keywords: natural and artificial feed; Growth; Survival rate; Maanvis; Pterophyllumscalare
The Influence of Different Filters Substrate on Recirculation Systems to the Growth Rates of Selais Fish (Ompok hypopthalmus) Siambaton, Nia Junaira; M Tang, Usman; Pamukas, Niken Ayu
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRAKThis research was conducted from April to Juni 2018, for 40 days in Technology Laboratory of Fisheries Faculty and Marine Sciences, University of Riau. The aim of the research was to know the best type of filter in reducing NH3 concentration and the effect of the water recirculation system on increasing growth and survival rates of Selais fish (Ompokhypopthalmus).used fish sized 5-8 cm. The method used was the experimental method with Completely Randomized Design (RAL) by using one factor of 5 treatments levels and 4 replications. The treatments were1)dacron, 2)bioball, 3) gravel, 4) charcoal, 5) zeolites. The conclusions obtained are use of Different Filter Substratesgive a real influence on growth and survival rate selais fish (Ompok hypopthalmus). The best result was treatment bioball with absolute growth weights (6,22 g), absolute growth length (4,50 cm), daily growth rate (3,81%) and survival rate (98,33%). Water quality parameters such as temperature 27,2-29,2 oC, pH 5,3-6,5, dissolved oxygen (DO) 4,3-5,5 mg/L, ammonia (NH3) 0,038mg/L, nitrite (NO2) 0,393 mg/L dan nitrate (NO3)0,683 mg/L.Keywords : Filter;Resirculation; growth; Survival Rate; Ompok hypopthalmus
Effect of Different Container Colors on Behaviour and the Quality of Comet Fish (Carassius auratus) Harini, Desi Gita; Mulyadi, Mulyadi; M Tang, Usman
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT             Thisresearch was conducted on 24 October until 02 December 2018 at Aquaculture Technology Laboratory of Fisheries and Marine, University Riau, Pekanbaru. The purpose of this experiment was to investigate the effect of container for behaviour and colour quality of comet fish (Carassius  auratus). The research method use in this study was an experimental method and completely randomized design with five treatments and three replication. The treatments in this study were (P0) white container, (P1) black container, (P2) blue container, (P3) yellow container, (P4)combination container. Colour The result show that behaviour in containers that are bright fish are more active swimming in groups compared to dark colors fish. The result shownP3 (yellow container) that is 8,20 and P2 (blue container) is 5,67.The absolute best weight growth in P2(blue container) 2,71 g, absolute long growth in treatment in P3(yellow container) 2,24 cm and the best survival treatments have P0, P2 dan P3 especially 100%. Keywords:Behaviour, color quality,comet fish.
Maintenance of Sheatfishes (Ompok hypopthalmus) Fingerling with the Addition of Probiotic Boster Biolacto to Feed with Different Doses in the Recirculation System Safitri, Risma; M Tang, Usman; Putra, Iskandar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACTThis research aims to determine the optimal Biolacto probiotic boster dose on feed mixing to improve feed efficiency, growth rate and survival of coriander (Ompok hypopthalmus) in recirculation systems. The research was conducted for 40 days from February to April 2019. This research was conducted at the laboratory f aquaculture technology Faculty of Fisheries and Marine Sciences, Riau University. The experiment method was done experimentally using a Completely Randomized Design (RAL) which consists of 5 treatments and 4 replications, is treatment 1). 0 mL/kg of feed (control); 2).3 mL/kg of feed; 3).5 mL/kg of feed; 4).7 mL/kg of feed; 5).9 mL/kg of feed. The results of this study showed the addition of probiotics Biolacto in the feed to give effect to the growth rate of daily seeds of sheatfishes, feed efficiency and feed conversion ratio. The addition of probiotics at 9 mL/kg of feed gave the highest yield on the daily growth rate of 1.89%, the highest yield on feed efficiency of 84.61% and the best feed conversion ratio of 1.18. However, survival was not significantly different between treatments.Keyword : Sheatfishes, Probiotic Boster Biolacto, Resirculation system
THE EFFECT OF FEEDING FREQUENCY ON THE GROWTH AND SURVIVAL RATE OF MUD CRAB(Scylla serrata) Gaol, Rizal B Lumban; M Tang, Usman; Putra, Iskandar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT             Mudcrabs (Scylla serrata) are one of the fisheries commodities that have high economic value. Feed is the most important production factor in the cultivati of mud crabs. To determine the effect of appropriate feeding frequency and find out the best frequency for the growth and survival of mudcrabs (Scylla serrata). The method used in this study was to use a Completely Randomized Design (CRD) with a frequency of 5 feeding factors, namely 1, 2, 3, 4 and 5 times a day. Treatment 1 (Feeding once a day), Treatment 2 (Feeding 2 times a day), Treatment 3 (Feeding 3 times a day), Treatment 4 (Feeding 4 times a day), Treatment 5 (Feeding 5 times a day). thus 15 units of experimental containers are needed with a container area of 59 x 37 x 17 cm3. Parameters observed included absolute weight growth, daily growth rate, feed efficiency, feed conversion, survival and quality water. The results showed that the frequency of feeding 3 times a day was the best treatment with absolute weight of 74 cm, absolute length of 2.10 cm, specific growth rate, 1.37%, feed efficiency 89.89%, feed conversion 1.11% , Survival rate 91.6%. Based on the results of the study the frequency of feeding 3 times a day is good to be applied to the growth of Mudcrabs (Scylla serrata).Keywords: Mullet Fish, Mudcrab, Absolute Weight Growth, Daily Growth Rate, Feed Efficiency, Feed Conversion, Survival
The Effect Of Addition Vitamin C On Feed With Different Doses Towards Growth And Survival Rate Of Giant Prawns (Macrobrachium rosenbergii) In the Recirculation System Rahayu, Mita; M Tang, Usman; Mulyadi, Mulyadi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT This research was conducted on March 18th-May 1st, 2019 in the Laboratory of Aquaculture Technology, Faculty of Fisheries and Marine, University of Riau. The aimof this study is to determine the effect of the best dose of vitamin C addition of feed on the growth of giant prawns. The container of this research used a 60x40x40 cm 3 aquarium with 20 aquariums with a stocking density of 15 prawns/aquarium. This study used a Completely Randomized Design (CRD) with one factor of five treatment levels and four replications. Each treatment was given the addition of vitamin C as much as P0 (0 m g/kg), P1 (300 mg/kg), P2 (450 mg/kg), P3 (600 mg/kg), and P4 (750 mg/kg) feed. The results of the research showed that the best treatment was found in P3 (600 mg/kg) feed resulting in absolute weight growth of 1,26 g, specific growth rate of 7,72% and survival rate of 98,33%. Keywords : Macrobrachium rosenbergii, Vitamin C, Growth 
The Maintenance Of Baung Fish (Hemibagrusnemurus) With Different Stocking Densities In Aquaponic Circulation Systems And Addition Of Probiotics In Feed Zuria, Ridha; M Tang, Usman; Putra, Iskandar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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 ABSTRACT          This research was conducted from February to April 2019, for 45 days in Breeding Laboratory Unit of Fisheries Faculty and Marine Sciences,University of Riau Pekanbaru. The purpose of this research was to determine the optimal amount of stocking density in the maintenance of baung fish that was maintained with an aquaponic recirculation system and the addition of probiotics to the feed. The method used in this research was an experimental method with a one-factor completely randomized design (CRD) with 5 treatment levels and 3 replications, so that 15 experimental units were needed.The stocking density of baung used in this research is as follows: P1) 400 head/m3; P2) 500 head/m3; P3) 600 head/m3; P4) 700 head/m3; P5) 800 head/m3. The best treatment was obtained from P3, with a stocking density of 600 head/m3with absolute weight value of 6.18 g, absolute length of 4.89 cm, specific growth rate of 3.47, feed efficiency 98.91% and survival rate 93.06% . Water quality during the research was temperature 26-280C, pH 6.0-7.3, dissolved oxygen 4.3-7.0 mg/L and ammonia 0.01-0.21 mg/L. Keyword: Hemibagrus nemurus, Stocking density, Aquaponic recirculation, Probiotic 
GROWTH PERFORMANCE OF ASIAN REDTAIL CATFISH (Hemibagrus nemurus) WITH DIFFERENT STOCKING DENSITY ON BOSTER SYSTEM Matondang, Putra Ali Syahbana; M Tang, Usman; Putra, Iskandar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT This research was conducted on March 2019 until April 2019 held at UPT Fish Hatchery and Experimental Pond Fisheries and Marine Faculty Riau University. The aim of the research is to know the best stocking density on Asian redtail catfish (Hemibagrus nemurus) with boster system. The design of this research is an experimental model using Completely Randomized Design Factorial pattern (RAL) of 1 factor, 5 treatment levels, and 3 replications. The standard of treatment used is stocking density 400 individual/m3, 500 individual/m3, 600 individual/m3, 700 individual/m3, dan 800 individual/m3. During 42 days maintenance of the best treatment on stocking density 700 individual/m3 with an absolute weight growth was 4,41 g, the absolute length was 4,81 cm, the specific growth rate was 5,90%, feed efficiency was 91,68%, feed conversion ratio was 1,09, and survival rate was 91,66%. And the water quality during the research is the temperature was 25,9 to 27,1oC, pH was 6,9 to 7,2, dissolved oxygen was 6,0 to 6,8 mg/L and ammonia was 0,003 to 0,005 mg/L. Keyword :Hemibagrus nemurus,Stocking Density,Boster System