Effect of supplementary feeding on growth responses of endangered Indian butter catfish (Ompok bimaculatus) in polyculture

2018 ◽  
Author(s):  
Chandan Debnath ◽  
Lopamudra Sahoo ◽  
Biswajit Debnath ◽  
Gulab Singh Yadav
Keyword(s):  
Stocking Density ◽  
Quality Parameters ◽  
Mustard Oil ◽  
Cost Ratio ◽  
Growth Responses ◽  
Feed Conversion ◽  
Benefit Cost Ratio ◽  
Benefit Cost ◽  
Protein Feed ◽  
Ompok Bimaculatus

A six-month-long trial was conducted to assess the supplementation of 30% protein (F2) and 35% protein feed (F3) compared with conventional rice bran+mustard oil cake feeding (F1) on the growth responses of endangered Indian butter catfish, Ompok bimaculatus (pabda) stocked at 15% with 40% catla, 30% rohu and 15% mrigal in polyculture in stocking density of 4000 fingerlings/ha. Water and soil quality parameters were assessed on monthly intervals which showed normal variation among the treatments. The weight of the pabda during harvest was higher in F2 and F3 than F1; as a result, growth rate was higher in F2 and F3 than F1. Survival was highest in F2. The growth of carps was significantly improved in F2 and F3 except for mrigal in F2. Feed conversion ratio significantly lower in F2 and F3 when compared with F1. Benefit-cost ratio was lowest in F3. Overall, the pabda production was increased by 16.2% with F2 and 19.5% with F3. The study concluded that pabda perform better in polyculture with carps when feed supplemented with 30% protein feed.

scholarly journals Enhancing fish productivity through pen culture: a case study in Sareni wetland of Uttar Pradesh

2017 ◽  
Vol 64 ◽  
Author(s):  
A. Alam ◽  
K. D. Joshi ◽  
S. C. S. Das ◽  
D. N. Jha ◽  
K. Srivastava ◽  
...  
Keyword(s):  
Uttar Pradesh ◽  
Quality Parameters ◽  
Catla Catla ◽  
Cost Ratio ◽  
Feed Conversion ◽  
Benefit Cost Ratio ◽  
Indian Major Carps ◽  
Benefit Cost ◽  
Fish Productivity

Pen culture for in situ raising of stocking material was conducted in Sareni Jheel, located in the Rae Bareli District of Uttar Pradesh. Sareni Jheel, being rich in organic carbon (4.5%) and nutrients, higher values of silt (29%) and clay (15%) were recorded. Rich oxygen levels, alkaline pH, high organic matter, moderate to high chemical parameters suggested moderately productive nature of this wetland. Pen with high-density polyethylene (HDPE) net was installed in an area of 0.1378 ha and stocked with advanced fry of the Indian major carps, rohu Labeo rohita and catla Catla catla in the ratio of 1:1 @ 25 nos. m-2. No significant changes in water quality parameters were noticed within and outside the installed pen. Mean weight at stocking of rohu and catla was 2.88±1.41 g and 2.1±1.16 g, which increased to 57.2±13.84 g and 67.38±25.79 g respectively, in 120 days. The average feed conversion ratio (FCR) recorded was 1.08 with overall survivability of 69.52% in rohu and 74.74% in catla. Benefit-cost ratio and return on investment were calculated as 1.69 and 0.69, respectively. Intervention through pen culture resulted in the increase in fish productivity of Sareni Jheel from 310 to 833 kg ha-1.

scholarly journals The Potential for Homestead Pond Polyculture of Tilapia and Carps in Coastal Bangladesh

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Md. Abdul Wahab ◽  
Md. Jimi Reza ◽  
Mir Mohammad Ali ◽  
Md. Nahiduzzaman
Keyword(s):  
Quality Parameters ◽  
Catla Catla ◽  
Cost Ratio ◽  
Participatory Action ◽  
Coastal Bangladesh ◽  
Benefit Cost Ratio ◽  
Fishing Villages ◽  
Income Opportunity ◽  
Benefit Cost ◽  
Major Carps

A fishers’ women-led Participatory Action Research (PAR) was conducted in 30 homestead ponds to assess the potential for polyculture of Tilapia (Oreochromis niloticus) and major carps Rohu (Labeo rohita) and Catla (Catla catla) in two coastal fishing villages of Bangladesh. Three treatments, namely T1 (Tilapia 200 fish per decimal; 1 decimal=40 m2), T2 (Tilapia 200+ Rohu 32+ Catla 8 fish per decimal) and T3 (Tilapia 200+ Rohu 8+ Catla 32 fish per decimal), each with 5 replicates, were tried in Hossainpur and Anipara villages. Formulated commercial Mega-feed was applied to the ponds twice daily at an initial rate of 10% body weight (bw)/day of Tilapia down to 4% bw/day throughout the culture period. The water quality parameters of ponds including temperature, transparency, pH, salinity and dissolved oxygen significantly varied among treatments except temperature and pH and remained within optimum range for carp polyculture except salinity. The survival rate, harvesting weight and yield of Tilapia were significantly highest in T1 (85.63±05%, 258.59±18.76 g & 11073±805 kg/ha, respectively) in Anipara and lowest in T3 (75.63±0.37%, 136.97±10.63 g & 5180±406 kg/ha, respectively) in Hossainpur. The gross fish production was the significantly highest in T1 (11354±806 kg/ha) of Anipara and lowest in T1 (6325±227 kg/ha) of Hossainpur. Statistically, the highest net return (866,627±84874 BDT/ha) was found in T1 of Anipara and lowest in T3 (279,389±46104 BDT/ha) of Hossainpur with a significantly higher benefit-cost ratio (BCR) obtained in T1 (3.26±0.20) for Tilapia and lower in T3 (1.58±0.10) for polyculture Tilapia and carp of Hossainpur. Therefore, it may be concluded that Tilapia production in small homestead coastal ponds has a higher potential than its mix with carps in polyculture for generating food and supplemental income opportunity for coastal fishers’ women in Bangladesh.

scholarly journals Potentialities of pond fish farming in Kaliakair upazila under Gazipur district, Bangladesh

2015 ◽  
Vol 2 (3) ◽  
pp. 517-528
Author(s):  
Md Mahbubur Rahman ◽  
Md Nurunnabi Mondal ◽  
Jannatun Shahin ◽  
Jannatul Fatema ◽  
Mst Kaniz Fatema
Keyword(s):  
Group Discussion ◽  
Stocking Density ◽  
Fish Farming ◽  
Pond Water ◽  
Cost Ratio ◽  
Anabas Testudineus ◽  
Benefit Cost Ratio ◽  
Climbing Perch ◽  
Aquaculture System ◽  
Benefit Cost

Potentials and prospects of pond fish farming in improving aquaculture system in Kaliakair upazila under Gazipur district, Bangladesh were investigated. Data were collected from 60 selected fish farmers through questionnaire survey and Focus Group Discussion (FGD) during June to November, 2014. The research revealed that a highest number of pond fish farmers (61.67%) were out of training facilities and a good portion (23.33%) had no education. Pond water was found turbid seasonally (71.66%) and farmers did not exchange water during culture periods (66.67%). As a result water quality deteriorates day by day and depletion of oxygen occurs during pond farming. The average stocking density of fish was higher in the study area and the highest was found in monoculture of Climbing perch (Anabas testudineus ) (1200 individual/decimal) and lowest in carp polyculture system (195 individual/decimal). Fish production was higher in Pangus monoculture system (17.89 MT/ha/yr) and lower in Climbing perch monoculture system (10.78 MT/ha/yr), but profit was higher in Climbing perch monoculture produced 1318100 Tk./ha/yr and lower in Tilapia monoculture 397886 Tk./ha/yr. Benefit Cost Ratio was higher in Climbing perch (2.32) and lower in Pangus culture (1.34). The problems faced by the fish farmers were broadly categorized as financial, natural, technical and social. Therefore, necessary training facilities with institutional and organizational supports, credit facilities, extension services and awareness development are essential to improve aquaculture system as well as the fishers’ livelihoods in Kaliakair upazila of Gazipur district.Res. Agric., Livest. Fish.2(3): 517-528, December 2015

scholarly journals Comparison of Performance between Organic Farming and Traditional Farming of Freshwater Prawn in Respect of Production and Economics

2016 ◽  
Vol 9 (1) ◽  
pp. 109-116
Author(s):  
MR Haque ◽  
N Nahar ◽  
R Pervin ◽  
MA Samad
Keyword(s):  
Organic Farming ◽  
C:N Ratio ◽  
Total Yield ◽  
Stocking Density ◽  
Quality Parameters ◽  
Freshwater Prawn ◽  
Cost Ratio ◽  
Feed Conversion ◽  
Traditional Farming ◽  
Significant Difference

An experiment was conducted to compare the performance between traditional farming and organic farming of freshwater prawn in respect of production and economics. The experiment had two treatments, namely: Traditional (TT) and Organic (TO) with same stocking density (20000 juvenile’s ha-1) in triplicate. In treatment TO, formulated feed with locally available ingredients were used, and maize flour and bamboo branches were provided for maintaining C:N ratio to 20 and for developing periphyton, respectively. In treatment TT, only commercially available prawn feed was applied. No fertilizers or other types of chemicals or antibiotics were used in both treatments. There were no significant differences (P?0.05) of different water quality parameters between both treatments. Weight gain and specific growth rate (% body weight day-1) of prawn was significantly higher (P<0.05) in TO than TT treatment. Survival rate and feed conversion ratio of prawn did not vary significantly between both treatments. Highest total yield was obtained from TO treatment (511.41 kg ha-1 90 d-1) compared to TT treatment (426.57 kg ha-1 90 d-1). Net yield was also significantly higher in treatment TO (428.32 kg ha-1 90 d-1) than TT (347.77 kg ha-1 90-1). Although there was no significant difference in benefit-cost ratio between both treatments, totalreturn was significantly higher in TO than TT treatment.J. Environ. Sci. & Natural Resources, 9(1): 109-116 2016

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 

Polyculture potentials of Galda (Macrobrachium rosenbergii) with Heteropneustes fossilis and Clarias batrachus in South-western coastal ghers of Bangladesh

2020 ◽  
Vol 32 (1) ◽  
pp. 29-38
Author(s):  
RAKHI DAS ◽  
MD. SHARIFUL ISLAM ◽  
KHAN KAMAL UDDIN AHMED
Keyword(s):  
Macrobrachium Rosenbergii ◽  
Stocking Density ◽  
The Other ◽  
Clarias Batrachus ◽  
Cost Ratio ◽  
Heteropneustes Fossilis ◽  
Average Growth ◽  
Benefit Cost Ratio ◽  
Physico Chemical ◽  
Benefit Cost

Prawn (Macrobrachium rosenbergii) culture is socially more acceptable, technically and economically viable and sustainable. The freshwater catfishes Heteropneustes fossilis (shing) and Clarias batrachus (magur) adapt well to hypoxic water bodies and high stocking densities as well. So, shing and magur may be a good candidate to culture with prawn in ponds/ghers to save the farmers from losing their investment in case of shrimp mortality and getting additional income from fish. With this view, this study was conducted to evaluate the feasibility of polyculture with three treatments each with three replications. Stocking density of shing was variable i.e., 200nos/decimal in T1, 300nos/decimal in T2 and 400 nos/decimal in T3. On the other hand, stocking density of magur and prawn juveniles was 50 and 30 nos/decimal respectably for all treatments. The experimental ghers were treated with salt (NaCl) (150g/decimal), potasium permanganate (5g/decimal) along with lime (125 kg/ha). After stocking fish were fed using floating nursery feed containing 32%, protein and 7% lipid at the rate of 10-2% for shing and magur nursing, floating oil coated grower feed (27% protein and 6% lipid) at the rate of 6-2% for shing and magur grow out and prawn grower (30% protein and 7% lipid) at the rate of 6-2.5% of estimated fish and prawn biomass. At least 10% of stocked catfish and galda were sampled fortnightly using cast net. Physico-chemical parameters of the experimental ghers water were monitored at weekly. After six months of culture the highest growth performance (47.0 g) and survival (19.94%) for shing obtained from T3. Whereas the average growth of shing was recorded 37.02 and 41.14g; growth of magur 99.21g and 99.51g and growth of galda 69.74 and 70.19 for Treatment T1 and T2 respectively. Except ammonia and iron content the other observed parameters of ghers water found congenial for fish health. The value of Benefit-Cost Ratio (BCR) was 1.4 that seems to be profitable and feasible of this polyculture practice.

scholarly journals The Potential for Homestead Pond Polyculture of Tilapia and Carps in Coastal Bangladesh

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Md. Abdul Wahab ◽  
Md. Jimi Reza ◽  
Mir Mohammad Ali ◽  
Md. Nahiduzzaman
Keyword(s):  
Quality Parameters ◽  
Catla Catla ◽  
Cost Ratio ◽  
Participatory Action ◽  
Coastal Bangladesh ◽  
Benefit Cost Ratio ◽  
Fishing Villages ◽  
Income Opportunity ◽  
Benefit Cost ◽  
Major Carps

A fishers’ women-led Participatory Action Research (PAR) was conducted in 30 homestead ponds to assess the potential for polyculture of Tilapia (Oreochromis niloticus) and major carps Rohu (Labeo rohita) and Catla (Catla catla) in two coastal fishing villages of Bangladesh. Three treatments, namely T1 (Tilapia 200 fish per decimal; 1 decimal=40 m2), T2 (Tilapia 200+ Rohu 32+ Catla 8 fish per decimal) and T3 (Tilapia 200+ Rohu 8+ Catla 32 fish per decimal), each with 5 replicates, were tried in Hossainpur and Anipara villages. Formulated commercial Mega-feed was applied to the ponds twice daily at an initial rate of 10% body weight (bw)/day of Tilapia down to 4% bw/day throughout the culture period. The water quality parameters of ponds including transparency, salinity and dissolved oxygen significantly varied among treatments except temperature and pH and remained within optimum range for carp polyculture except salinity. The survival rate, harvesting weight and yield of Tilapia were significantly highest in T1 (85.63±05%, 258.59±18.76 g & 11073±805 kg/ha, respectively) in Anipara and lowest in T3 (75.63±0.37%, 136.97±10.63 g & 5180±406 kg/ha, respectively) in Hossainpur. The gross fish production was the significantly highest in T1 (11354±806 kg/ha) of Anipara and lowest in T1 (6325±227 kg/ha) of Hossainpur. Statistically, the highest net return (866,627±84874 BDT/ha) was found in T1 of Anipara and lowest in T3 (279,389±46104 BDT/ha) of Hossainpur with a significantly higher benefit-cost ratio (BCR) obtained in T1 (3.26±0.20) for Tilapia and lower in T3 (1.58±0.10) for polyculture Tilapia and carp of Hossainpur. Therefore, it may be concluded that Tilapia production in small homestead coastal ponds has a higher potential than its mix with carps in polyculture for generating food and supplemental income opportunity for coastal fishers’ women in Bangladesh.

The trouble with benefit–cost ratios: benefit–cost ratio maximization versus wealth maximization

1986 ◽  
Vol 16 (1) ◽  
pp. 142-144 ◽  
Author(s):  
Doug Rideout
Keyword(s):  
Net Present Value ◽  
Stocking Density ◽  
Cost Ratio ◽  
Fixed Costs ◽  
Present Value ◽  
Wealth Maximization ◽  
Benefit Cost Ratio ◽  
Decision Variables ◽  
Rotation Age ◽  
Benefit Cost

The paper analyzes benefit–cost ratios, as a maximization objective, by using the criterion of net present value. A basic Faustmann formulation with rotation age and stocking density as decision variables is expressed as a benefit–cost ratio to demonstrate that maximization of benefit–cost ratios is generally inconsistent with wealth maximization. The paper shows that maximization of the benefit–cost ratio results in the Fisherian solution to rotation age when stocking density is held constant. The paper also shows and that formulating the benefit–cost ratio as an infinite series of rotations is equivalent to formulating the benefit–cost ratio as a single rotation. Maximizing the benefit–cost ratio generally results in suboptimal use of stocking density when rotation age is held constant. In addition, fixed costs can influence the choice of stocking level. The simultaneous solution to stocking density and rotation age indicates the only instance benefit–cost ratio maximization results in correct Faustmann solutions is when the benefit–cost ratio equals one.

Comparative Effectiveness Of Seed Treating And Foliar Insecticides Against Sucking Pests Of Cotton And Impact On Their Natural Enemies

2013 ◽  
Vol 38 (1) ◽  
pp. 61-70 ◽  
Author(s):  
SMA Hossain ◽  
MA Baque ◽  
MR Amin
Keyword(s):  
Natural Enemies ◽  
Untreated Control ◽  
Seed Treatment ◽  
Foliar Spray ◽  
Cost Ratio ◽  
Research Station ◽  
Benefit Cost Ratio ◽  
Benefit Cost ◽  
Thrips Population ◽  
Cotton Cultivar

The Imidacloprid insecticide, Gaucho 70 WS at 1.5, 2.5, 3.5, 4.5 and 5.5 g/kg seed was used as seed treatment and monocrotophos 40 WSC at 1120 ml/ha was applied as foliar spray on CB9 cotton cultivar to suppress aphid, whitefly and thrips, and impact on their natural enemies during 2008-2011 at the Regional Cotton Research Station, Dinajpur, Bangladesh. The activity of natural enemies, such as ladybird beetle, lacewing, syrphid, and spider population on the sucking pests attacking cotton cultivar CB9 and yield of cotton were recorded. Imidacloprid significantly reduced aphid, whitefly, and thrips population on cotton crops compared to untreated control or foliar spray of monocrotophos 40 WSC at 1120 ml/ha. Ladybird beetles, lacewings, syrphids, and spiders were abundant in the field but their population decreased in the treated plots compared to untreated control. The CB9 cotton cultivar produced significantly higher yield (1.73 t/ha) with a benefit cost ratio 12.47 when seeds were treated with Imidacloprid at 5.5 g/kg fuzzy seed. This study indicated that Imidacloprid (Gaucho 70 WS) used as a seed treatment may be suggested to the cotton growers for controlling sucking pests. Bangladesh J. Agril. Res. 38(1): 61-70, March 2013 DOI: http://dx.doi.org/10.3329/bjar.v38i1.15190

EVALUASI TERHADAP PENGELOLAAN SAMPAH DALAM MENINGKATKAN PELAYANAN ASET DI KOTA PEMATANGSIANTAR

2017 ◽  
Vol 13 (3) ◽  
pp. 240
Author(s):  
Novdin M Sianturi
Keyword(s):  
Net Present Value ◽  
Payback Period ◽  
Rate Of Return ◽  
Cost Ratio ◽  
Internal Rate Of Return ◽  
Present Value ◽  
Benefit Cost Ratio ◽  
Internal Rate ◽  
Benefit Cost

Abstrak: Pengelolaan sampah di Kota Pematangsiantar masih bertumpu pada pendekatan akhir (kumpul-angkut-buang), dengan tingkat pelayanan yang rendah, sehingga untuk meningkatkan pelayanan sampah, perlu dilakukan pemilahan di tempat penampungan sementara (TPS). Penelitian ini bertujuan untuk mengkaji sistem pengelolaan sampah dengan melakukan pemilihan di TPS dapat meningkatkan pelayanan aset persampahan sampai tahun  2015 secara teknis operasional dan dari aspek keuangan. Analisa teknis operasional aset pengelolaan sampah mulai dari pewadahan, pengumpulan dan pengangkutan sedangkan analisa keuangan dan analisa kelayakan menggunakan Net Present Value, Internal Rate of Return, Benefit/Cost Ratio, dan Payback Period. Dari hasil analisa tersebut diperoleh suatu sistem pengelolaan sampah dengan pemilihan di TPS berdasarkan zona pelayanan dengan skala prioritas secara bertahap daritahun 2013-2017, dapat meningkatkan cakupan pelayanan sampah eksisting rata-rata 6,69 %, cakupan pelayanan TPS eksisting rata-rata 8,29 %, dan cakupan pelayanan truk pengangkut sampah eksisting rata-rata 12,03 %. Investasinya layak, diperoleh Net Cashflow pada tahun 2020 sebesar Rp 1.720.242.284,-, NPV suku bunga 15 % bernilai positif, IRR > MARR 15 %,  B/C Ratio > 1, dan PP 4,7 tahun, lebih pendek dari periode investasi 10 tahun. Dari Metode penelitian ini maka pengumpulan data, observasi lapangan dan pengukuran contoh timbulan sampah dengan sampel 4 TPS perumahan yang terlayani pengangkutan.

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