scholarly journals Impact of Fish Population Density on Growth and Production of Sarpunti, Mrigal and Tilapia in Polyculture System

2015 ◽  
Vol 6 (2) ◽  
pp. 49-53
Author(s):  
SN Chowdhury ◽  
M Paul ◽  
AC Barman ◽  
A Bhadra ◽  
MS Rahman
Keyword(s):  
Population Density ◽  
Oreochromis Niloticus ◽  
Specific Growth ◽  
Survival Rates ◽  
Stocking Density ◽  
Fish Population ◽  
Fish Production ◽  
Initial Length ◽  
Specific Growth Rates ◽  
Supplementary Feed

An experiment was conducted to determine the impacts of fish population density on the growth and production of sarpunti (Barbonemus gonionotus), mrigal (Cirrhinus mrigala) and tilapia (Oreochromis niloticus) in polyculture system for a period of 90 days in six earthen pond .The experiment was carried out under three treatments each with two replications. The stocking density was 50 fish per decimal (sarpunti 20, mrigal 20 and tilapia 10) under treatment-I, 75 fish per decimal (sarpunti 30, mrigal 30 and tilapia 15) under treatment-II and 150 fish per decimal (sarpunti 60, mrigal 60 and tilapia 30) under treatment- III and all the ponds under three treatments supplementary feed was not used. The average initial length and weight of the fingerlings of sarpunti, mrigal and tilapia were 13.29 cm, 12.80 cm, 4.55cm and 22.7g, 23.75g and 3.84 g respectively. The ponds were fertilized fortnightly with cowdung, urea and TSP at the rates of 5 kg, 100 g and 200g per decimal, respectively. Mean survival rates of fish under treatment-I, treatment-II and treatment-III were 87.50%, 88.16% and 81.30% respectively. The specific growth rates (SGR, % per day) of fish under treatment-I, treatment-II and treatment-III were 1.13%, 1.03% and 0.80%. The calculated net fish production of the ponds under treatment-I was 1.61 ton/ha/yr and that of the ponds under treatment-II was 1.97 ton/ha/yr and 2.5 ton/ha/yr in treatment-III.DOI: http://dx.doi.org/10.3329/jesnr.v6i2.22095 J. Environ. Sci. & Natural Resources, 6(2): 49-53 2013

scholarly journals Study of growth and productions of tilapia (Oreochromis niloticus) on different population densities in monoculture

2020 ◽  
Vol 9 (2) ◽  
pp. 76-83
Author(s):  
F Sharmin ◽  
MS Rahman ◽  
M Shahjahan ◽  
P Chowdhury
Keyword(s):  
Population Density ◽  
Growth Rates ◽  
Oreochromis Niloticus ◽  
Specific Growth ◽  
Survival Rates ◽  
Fish Population ◽  
Fish Production ◽  
Population Densities ◽  
Specific Growth Rates ◽  
Supplementary Feed

The experiment was conducted to determine the effects of population densities of tilapia (Oreochromis niloticus) on the growth and production of tilapia in monoculture system. Fish population density was 80 fish per decimal under treatment-I, 160 fish per decimal under treatment-II and 320 fish per decimal under treatment-III. In the ponds under three treatments supplementary feed was not used. The average initial length and weight of the fry of tilapia was 4.48 cm and 0.067 g, respectively. The ponds were fertilized fortnightly with urea and TSP at the rates of 60 g, and 90 g per decimal, respectively. Mean survival rates of fish under treatment-I, treatment-II and treatment-III were 91.12%, 82.82% and 66.23%, respectively. The specific growth rates (SGR, % per day) of fish under treatment-I, treatment-II and treatment-III were 5.49%, 4.95% and 4.61%, respectively. The calculated net fish production of the ponds under treatment-I was 2.65 ton ha-1 yr-1 and that of the ponds under treatment-II was 2.55 ton ha-1 yr-1 and that of the ponds under treatment-III was 2.68 ton ha-1 yr-1. The net fish production under treatment-I and treatment-III were 2.65 ton ha-1 yr-1 and 2.68 ton ha-1 yr-1 higher than that of treatment-II, taking net fish production under treatment-I for 100%. According to survival rates and specific growth rates treatment-I is the best. So, the population density of 80 fish per decimal (under treatment-I) might be considered the best among the three treatments. Int. J. Agril. Res. Innov. Tech. 9(2): 76-83, December 2019

scholarly journals Effects of Fish Population Densities on Growth and Production of Fishes

2013 ◽  
Vol 23 (1-2) ◽  
pp. 63-73
Author(s):  
JK Apu ◽  
MS Rahman ◽  
H Rashid
Keyword(s):  
Population Density ◽  
Cost Analysis ◽  
Silver Carp ◽  
Stocking Density ◽  
Experimental Period ◽  
Fish Population ◽  
Total Alkalinity ◽  
Fish Production ◽  
Net Profit

The experiment was carried out under three treatments each with two replications. Fish population density was 80 fish per decimal (silver carp 32, tilapia 32 and mrigal 16) under treatment-1, 120 fish per decimal (silver carp 48, tilapia 48 and mrigal 24) under treatment-2 and 160 fish per decimal (silver carp 64, tilapia 64 and mrigal 32) under treatment-3. The average initial length and weight of the fingerlings of silver carp, tilapia and mrigal were 7.49, 5.12, and 5.56 cm and 8.00, 2.00 and 1.50 g respectively. The ponds were fertilized fortnightly with cowdung, urea and TSP (triple super phosphate) at the rates of 5 kg, 60 g, and 90 g per decimal, respectively. During the experimental period, the range of water temperature (30.20 to 32.90°C), transparency (28 to 38 cm), dissolved oxygen (8.20 to 10.60 mg/L), pH (6.90 to 7.90), total alkalinity (92.00 to 127.00 mg/L), free CO2 (1.00 to 1.60 mg/L), phosphate-phosphorus (1.00 to 1.90 mg/L), and nitrate-nitrogen (1.90 to 3.90 mg/L) were within the productive range and more or less similar in all the ponds under three treatments. There were 25 genera of phytoplankton under five major groups and 10 genera of zooplankton under three major groups in the experimental ponds. The calculated net fish production of the ponds under treatment-1 was 2.62 ton/ha/yr and that of the ponds under treatment-2 was 4.42 ton/ha/yr and that of the ponds under treatment-3 was 5.18 ton/ha/yr. The net fish production under treatment-2 and treatment -3 were 195.58% and 229.20% higher than that of treatment-1, taking net fish production under treatment-1 for 100%. According to profit-cost analysis the ratios of net profit and total cost under treatments 1, 2, and 3 were 1:0.25, 1:0.45, and 1:0.44. According to growth and production treatment-3 is the best, and according to the profit-cost analysis, treatment-2 (ratio 1:0.45) is the best but it is almost same to that of treatment-3. So, the population density of 160 fish per decimal (under treatment-3) might be considered best. It seems that proper determination of stocking density of different fishes in polyculture is very important to increase fish production.DOI: http://dx.doi.org/10.3329/pa.v23i1-2.16566Progress. Agric. 23(1 & 2): 63 – 73, 2012

scholarly journals Effects of population density on growth and production of Tilapia in monoculture

2018 ◽  
Vol 7 (2) ◽  
pp. 49-56
Author(s):  
TH Majumder ◽  
P Chowdhury ◽  
M Shahjahan ◽  
MS Rahman
Keyword(s):  
Population Density ◽  
Cost Analysis ◽  
Experimental Period ◽  
Fish Population ◽  
Total Alkalinity ◽  
Fish Production ◽  
University Campus ◽  
Net Profit ◽  
Gift Tilapia ◽  
Supplementary Feed

The experiment was conducted to determine the effect of population density on growth and production of Tilapia (monosex GIFT tilapia) in monoculture system for a period of 110 days. The experiment was carried out in six earthen ponds, which were situated in the Bangladesh Agricultural University Campus, Mymensingh. The experiment was carried out under three treatments each with two replications. Fish population density was 200 fish per decimal under treatment-I, 400 fish per decimal under treatment-II and 600 fish per decimal under treatment-III. In the ponds supplementary feed of wheat bran and rice bran mixture were used daily at the rate of 46 g, 92 g and 136 g per decimal under treatment-I, II, and III, respectively. The average initial length and weight of tilapia were 4.63 cm and 2.82 g respectively. The ponds were fertilized fortnightly with urea and TSP at the rates of 60 g and 90 g, respectively. During experimental period, the ranges of water temperature (25.82 to 29.80 ºC), transparency (28.00 to 38.00 cm), dissolved oxygen (5.50 to 8.30 mg/L), pH (7.00 to 7.90), total alkalinity (130.00 to 200.00 mg/L), free CO2 (2.00 to 6.00 mg/L), phosphate-phosphorus (1.20 to 2.30 mg/L), and nitrate-nitrogen (3.20 to 4.00 mg/L) were within the productive range and more or less similar in all the ponds under three treatments. There were 25 genera of phytoplankton under five major groups and 10 genera of zooplankton under three major groups in the experimental ponds. Mean survival rate of fish under treatment-I, treatment-II, and treatment-III were 82.75%, 77.12% and 74.33% respectively. The calculated net fish production under treatment-I was 6.75 ton/ha/yr and that of the ponds under treatment-II was 10.26 ton/ha/yr and that of the ponds under treatment-III was 12.15 ton/ha/yr. The net fish production under treatment-II and treatment-III were 152% and 180% higher than that of treatment-I, taking net fish production under treatment-I for 100%. According to profit-cost analysis, the ratios of net profit under treatments I, II, and III were 1:0.44, 1:0.27, and 1:0.09. According to specific growth rate and survival, treatment-I is the best, and according to profit-cost analysis treatment-I (ratio 1:0.44) also the best. So, the population density of 200 fish per decimal (under treatment-I) might be considered the best among the three treatments.Int. J. Agril. Res. Innov. & Tech. 7 (2): 49-56, December, 2017

scholarly journals Effects of Duckweed (Lemna minor) as Supplementary Feed on Monoculture of Gift Strain of Tilapia (Oreochromis niloticus)

2014 ◽  
Vol 18 (2) ◽  
pp. 183-188 ◽  
Author(s):  
MN Uddin ◽  
MS Rahman ◽  
M Shahjahan
Keyword(s):  
Oreochromis Niloticus ◽  
Lemna Minor ◽  
Survival Rates ◽  
Stocking Density ◽  
Experimental Period ◽  
Total Body Weight ◽  
Total Alkalinity ◽  
Fish Feed ◽  
Net Production ◽  
Supplementary Feed

An experiment was conducted for a period of 135 days on the effect of duckweed (Lemna minor) as supplementary feed on monoculture of GIFT strain of tilapia (Oreochromis niloticus). The experiment had two treatments, each with three replications. In treatment-1 ponds were supplied with duckweed as supplementary fish feed and in treatment-2 ponds were kept as control (without supply of duckweed). Ponds were stocked at a stocking density of 150 fingerlings per decimal. The ponds were fertilized fortnightly with poultry dropping at the rate of 5 kg/decimal, urea 60g/decimal and TSP 90g/decimal. Duckweeds were supplied to the ponds (treatment-1) at the rate of 60% of the total body weight (wet weight basis) of the fish. During the experimental period, the ranges of physico-chemical parameters viz, water temperature, transparency, dissolved oxygen, pH, total alkalinity, free CO2, PO4-P, and NO3-N were within the productive limit and more or less similar in all the ponds under treatments 1 and 2. There were 24 genera of phytoplankton under 5 major groups and 10 genera of zooplankton under 3 major groups were found in the experimental ponds. Mean survival rates in treatments 1 and 2 were 85.34% and 83.68% respectively. Specific growth rate (SGR, % per day) of the fish in treatments 1 and 2 were 1.90% and 1.60% respectively. Calculated net production of the fish in treatment-1 was 5.03 ton/ha/yr and in treatment-2 was 3.11 ton/ha/yr. By t test it was found that the net production of fish in treatment-1 was significantly (p<0.05) higher than that of treatment-2.DOI: http://dx.doi.org/10.3329/pa.v18i2.18201 Progress. Agric. 18(2): 183 - 188, 2007

scholarly journals Effect of Monoculture and Polyculture Systems on Growth and Production of Fishes in Seasonal Waterbodies of Haor Villages, Sunamganj District

2017 ◽  
Vol 9 (3) ◽  
pp. 307-316
Author(s):  
M. S. Ali ◽  
M. S. Islam ◽  
N. Begum ◽  
I. N. Suravi ◽  
M. Mia ◽  
...  
Keyword(s):  
Wheat Flour ◽  
Rice Bran ◽  
Oreochromis Niloticus ◽  
Labeo Rohita ◽  
Stocking Density ◽  
Total Biomass ◽  
Fish Production ◽  
Supplemental Feed ◽  
Final Weight

The study was conducted to assess the growth and production of Thai sarpunti (Puntius gonionotus), tilapia (Oreochromis niloticus) and rui (Labeo rohita) under monoculture and polyculture systems in seasonal waterbodies of haor environment. Selected waterbodies were divided into three treatments as T1 (sarpunti), T2 (sarpunti+tilapia) and T3 (sarpunti+tilapia+rui). Each treatment had three replicates and same stocking density (40,000 ha-1) of fishes was maintained in all treatments. Stocked fishes were fed with rice bran and wheat flour as supplemental feed at a decreasing rate of 10-5% of total biomass for twice daily. The highest final weight of sarpunti (122.32 g), tilapia (102.58 g) and rui (140.0 g) was obtained in T1, T2 and T3, respectively. Significantly higher production of sarpunti was secured in T1 (3,446.13 kg ha-1) than T2 (2,942.6 kg ha-1) and T3 (2,804.1 kg ha-1), and tilapia production was better in T2 (2,786.07 kg ha-1) than T3 (2,172.52 kg ha-1). Combined production of sarpunti, tilapia and rui was significantly (p<0.05) higher in T3 (8,341.41 kg ha-1) followed by T2 (5,728.67 kg ha-1) and T1 (3,446.13 kg ha-1). Therefore, polyculture practice of sarpunti, tilapia and rui may be suggested to disseminate at farmers’ level for boost up fish production.

scholarly journals Effects of Stocking Density on Growth and Production of Silver Barb (Barbonymus gonionotus) in Pond

2017 ◽  
Vol 14 (2) ◽  
pp. 61-66
Author(s):  
Baadruzzoha Sarker ◽  
Mustafizur Rahman ◽  
Md Ruhul Amin
Keyword(s):  
Growth Parameters ◽  
Survival Rates ◽  
Stocking Density ◽  
Experimental Period ◽  
Water Area ◽  
Quality Parameters ◽  
Density Dependent ◽  
Weight Gains ◽  
Specific Growth Rates ◽  
Silver Barb

An experiment was carried out to study the density dependent growth of silver barb   (Barbonymus gonionotus) for a period of 2 months during14 March to 18 May, 2013 in ponds with individual water area of 2.0 decimal. The experiment was conducted with three treatments, replicated three times, where stocking densities were 50, 100 and 150 fish/decimal in T1, T2 and T3, respectively. Feeds were supplied twice daily throughout the study period. Sampling was done at weekly interval throughout the experimental period. Water quality parameters were monitored weekly. Temperature ranged from 26.40 to 30.13°C, transparency from 32.36 to 46.23 cm, dissolved oxygen from 4.80 to 5.83 mg/l and pH from 6.68 to 8.11. During the study period, growth parameters were analyzed. The mean weight gains were 52.48, 49.98 and 47.87 g, the percent weight gains were 2560.16, 2438.37 and 2335.12, the average daily weight gains were 0.82, 0.78 and 0.74 g, the specific growth rates were 5.12, 5.05 and 4.98%, the survival rates were 89.6, 86.67 and 82.11% in T1, T2, and T3, respectively. There were significant differences among T1, T2 and T3 for all the growth parameters. The total productions of silver barb were 603.85, 1114.00 and 1518.06 kg/ha/2 months in T1, T2 and T3, respectively. The present study indicates that the growth of silver barb was density dependent when grown in monoculture systems and the best stocking density for production was 150 fish/decimal. The Agriculturists 2016; 14(2) 61-66

scholarly journals Pengaruh penggunaan jenis wadah yang berbeda terhadap pertumbuhan dan kelangsungan hidup ikan betutu (Oxyeleotris marmorata Blkr.)

2019 ◽  
Vol 6 (2) ◽  
pp. 93
Author(s):  
Hadra Fi Ahlina ◽  
Yoyon Riono ◽  
Syaiful Ramadhan Harahap
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Survival Rate ◽  
Specific Growth ◽  
Stocking Density ◽  
High Growth ◽  
Fish Length ◽  
Sand Goby ◽  
Growth And Survival ◽  
Specific Growth Rates

AbstrakIkan betutu Oxyeleotris marmorata merupakan ikan lokal potensial menjadi komoditas budidaya. Performa pertumbuhan dan kelangsungan hidup dapat ditingkatkan dengan mengembangkan wadah budidaya. Tujuan penelitian adalah mengetahui jenis wadah budidaya yang optimal dalam mendukung pertumbuhan dan kelangsungan hidup. Perlakuan yang di uji adalah kolam tanah, kolam hapa dan kolam terpal berukuran 3 m x 2 m x 1 m. Ukuran benih yang digunakan 15±1,39 cm dengan bobot 250,04±1,70 g dengan padat tebar 25 ekor/kolam. Selama 120 hari masa pemeliharaan, pakan yang diberikan adalah ikan rucah sebanyak 30% dari bobot tubuh dengan frekwensi 2x sehari. Hasil penelitian menunjukkan perbedaan jenis wadah berpengaruh nyata terhadap pertambahan bobot dan laju pertumbuhan spesifik, namun tidak berpengaruh nyata terhadap kelangsungan hidup. Pertambahan bobot terbaik terdapat pada perlakuan jenis wadah kolam tanah sebesar 53,86±1,10 g dengan laju pertumbuhan spesifik 0,45±0,010 %bobot tubuh/hari dan kelangsungan hidup 85,33±6,11%. Kualitas air pada seluruh wadah pemeliharaan masih mendukung pertumbuhan dan kelangsungan hidup. Hasil penelitian ini dapat dijadikan informasi dasar dalam pemilihan wadah budidaya yang efektif dan efisien dalam pengembangan budidaya ikan betutu secara optimal.Kata kunci: ikan betutu; pertumbuhan; kelangsungan hidup; wadahAbstractSand goby (Oxyeleotris marmorata. Blkr) is a potential fish species for aquaculture in Indonesia. However, the growth and survival rate performance can be improved by developing cultivation containers. The research objective was to determine the optimal type of cultivation container to produce high growth and survival rate. The ponds treatments used in this experiment were soil pond, hapa pond and tarpaulin pond with measuring 3 m x 2 m x 1 m. The initial fish length average was 15±1.39 cm, with the initial body weight average of 250.04±1.70 g with the stocking density of 25 individual/pond. During 120 days of the rearing period, the fish were fed with trash fish with a proportion of 30% of body weight with the frequency of feeding 2x a day. The results showed differences in the type of container significantly affected weight gain and specific growth rates but did not significantly affect survival rate. The best weight gain was found in the treatment of soil pond containers at 53.86 ± 1.10 g with a specific growth rate of 0.45 ± 0.010% body weight/day and survival rate of 85.33 ± 6.11%. Water quality in all containers still supports growth and survival rate. The results of this study can be used as necessary information in the selection of effective and efficient aquaculture containers to produce optimal sand goby culture.Keywords: sand goby; growth; survival rate; container

scholarly journals The use of river hopper barges as facilities for aquaculture: The growth characteristics of carp (Cyprinus carpio) depending on stocking density

2010 ◽  
Vol 55 (2) ◽  
pp. 147-155
Author(s):  
Stefan Skoric ◽  
Branislav Mickovic ◽  
Slobodan Regner ◽  
Zeljka Visnjic-Jeftic ◽  
Aleksandar Hegedis
Keyword(s):  
Cyprinus Carpio ◽  
Growth Rates ◽  
Specific Growth ◽  
Stocking Density ◽  
Growth Characteristics ◽  
Significant Difference ◽  
Weight Distributions ◽  
Carp Cyprinus Carpio ◽  
Specific Growth Rates

Carps (Cyprinus carpio) were farmed on a river hopper barge at two stocking densities, 10 and 20 individuals per m3. A comparison of average weights, specific growth rates and weight distributions was performed. The obtained results show that there was no statistically significant difference in any of the parameters studied with regard to stocking density.

scholarly journals Integrated multi-trophic culture of Nile tilapia (Oreochromis niloticus) and Amazon river prawn (Macrobrachium amazonicum) in brackish water

2015 ◽  
Vol 67 (1) ◽  
pp. 265-273 ◽  
Author(s):  
G.G. Henry-Silva ◽  
C.S.P. Maia ◽  
R.S.T. Moura ◽  
A.P. Bessa Junior ◽  
W.C. Valenti
Keyword(s):  
Brackish Water ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Survival Rates ◽  
Stocking Density ◽  
Control Treatment ◽  
Amazon River ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Macrobrachium Amazonicum ◽  
Total Fish

The aim of this study was to assess the feasibility of integrated multi-trophic culture of Nile tilapia (Oreochromis niloticus) and Amazon River prawn (Macrobrachium amazonicum) in brackish water by evaluating its limnological characteristics and economic performance. The experiment was completely randomized with four treatments and four repetitions: control treatment with Nile tilapia only, stocked with 2 tilapias/m² (P2C0) and three integrated multi-trophic culture treatments stocked with 2 tilapias/m² and prawns at densities of 4, 8 and 16 prawns/m² (P2C04, P2C08 and P2C16, respectively). The limnological variables of temperature, pH, dissolved oxygen, turbidity, ammonia, orthophosphate and chlorophyll "a" were evaluated and throughout the experiment remained within the limits recommended for culture. The experiment lasted 150 days with monthly animal sampling. No significant differences were observed for total fish biomass or for fish and prawn total survival rates. However, prawn individual weight decreased as stocking density increased. Gross revenue was not significantly different between treatments, as well as profitability. The profitability was 40.1% (P2C0), 36.7% (P2C04), 41.2% (P2C08) and 50.1% (P2C16). It is concluded that although feasible from the view point of husbandry, the integrated multi-tropic culture of M. amazonicum and O. niloticus did not influence significantly profitability compared to the monoculture system.

scholarly journals Production and Economics of Gift Strain of Tilapia (Oreochromis niloticus) in Small Seasonal Ponds

2013 ◽  
Vol 19 (1) ◽  
pp. 97-104
Author(s):  
S Khan ◽  
MS Hossain ◽  
MM Hossain
Keyword(s):  
Oreochromis Niloticus ◽  
Survival Rates ◽  
Quality Parameters ◽  
Cost Ratio ◽  
University Campus ◽  
Benefit Cost Ratio ◽  
Seasonal Ponds ◽  
Supplementary Feed ◽  
Benefit Cost ◽  
Pellet Feed

The production and economics of GIFT strain of tilapia (Oreochromis niloticus) reared in nine seasonal small ponds at Bangladesh Agricultural University campus for a period of three months during August to October were evaluated. The experiment was arranged in three treatments (T) each with three replications. The ponds were drained, limed and fertilized with organic and inorganic fertilizers during preparation. After stocking the fishes the ponds were fertilized weekly with cowdung, urea and TSP. Supplementary feed was not given in T1, but rice bran and mustard oilcake were given in T2 and commercial pellet feed in T3. Some water quality parameters were monitored at regular intervals and they were within acceptable range for aquaculture. The survival rates were high (>95%) in all treatments. Significantly highest production (3941.50 kg/ha in three months) was found in T3 followed by T2 (1845.5 kg/ha) and T1 (972.50 kg/ha). Similarly, significantly highest net return (Tk. 61805.00/ha with benefit cost ratio of 1.45) was found in T3 followed by T2 (Tk.1339.00/ha with benefit cost ratio of 1.01) and T1 (Tk. 201.50/ha with benefit cost ratio of 1.00).DOI: http://dx.doi.org/10.3329/pa.v19i1.17360 Progress. Agric. 19(1): 97 - 104, 2008 

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