scholarly journals Stocking density of threatened cat fish Heteropneustes fossilis (Bloch, 1792) in seasonal ponds of Rajshahi, Bangladesh

2017 ◽  
Vol 52 (4) ◽  
pp. 253-262
Author(s):  
MA Samad ◽  
AS Bhuiyan
Keyword(s):  
Weight Gain ◽  
Stocking Density ◽  
Cost Benefit ◽  
University Campus ◽  
Heteropneustes Fossilis ◽  
Fish Yield ◽  
Seasonal Ponds ◽  
Cost Benefit Ratio ◽  
Final Length ◽  
Net Benefits

An attempt was made to evaluate the effect of stocking density on the growth of Heteropneustes fossilis for a period of six months reared in earthen ponds at Rajshahi University Campus. H. fossilis fingerling were stocked at the rate of 320, 280, 240/dec in treatment T1, T2 and T3, respectively, The treatments had significant effects on the weight gain, length gain, ADG, SGR parameters among the treatments. Highest weight gain (45.90g) was observed in T3 and lowest (36.97g) in T1. Significant (P<0.05) highest yield was obtained in case of T2 and T3 and it was 2686.80 kg/ha and 2343 kg/ha, respectively. Higher net benefits (5,18519.91TK/ha) were obtained from treatment T2, than from treatments T1 and T3, water temperature, transparency, pH and dissolved oxygen did not differ significantly (P>0.05) among the treatments depicting the suitable range for fish culture. The plankton levels in all the treatments were found to be at optimum state. Final length, final weight and survival of fingerlings followed the same trends of weight gain. Cost benefit ratio was also highest (1:0.93) in T2, followed by T3 and T1. Overall, highest growth, fish yield survival (95.67%) rate and net benefits of fingerlings were obtained at a density of 280/dec (69, 160 individuals/ha) in treatment T2 were recorded.Bangladesh J. Sci. Ind. Res. 52(4), 253-262, 2017

scholarly journals Determination of suitable species combination for good aquaculture practice based carp fattening in ponds under drought prone barind area of Bangladesh

2020 ◽  
Vol 5 (2) ◽  
pp. 114-122
Author(s):  
Md. Akhtar Hossain ◽  
Md. Anwar Hossain ◽  
Md. Ayenuddin Haque ◽  
Md. Mostafizur Rahman Mondol ◽  
Md. Harun Ur Rashid
Keyword(s):  
Low Cost ◽  
Stocking Density ◽  
Cost Benefit ◽  
Fish Yield ◽  
Benefit Ratio ◽  
Safe Production ◽  
Water Layers ◽  
Cost Benefit Ratio ◽  
Species Combination

Increased temperature, decreased water level and reduced culture period of the ponds with lack of guidelines in selecting appropriate stocking size, density and combination of species are major constraints for safe production of fattening based carps in drought prone barind area of Bangladesh. In order to address these problems, an experiment was conducted during July-December, 2018 to determine the suitable species combination for fattening ponds of overwintered carps in Tanore upazila (sub district) of Rajshahi district, Bangladesh. Three different combinations of surface (G. catla and H. molitrix), column (L. rohita) and bottom (C. cirrhosus and C. carpio var. specularis) feeding carp species were tested under 3 treatments (T1, T2 and T3), each with 3 replications: T1 (Surface-30%, column-40%, and bottom-30%), T2 (Surface-40%, column-30%, and bottom-30%) and T3 (Surface-35%, column-35%, and bottom-30%). Application of good aquaculture practices in the studied ponds was found to improve the environmental conditions of pond. Significantly (P< 0.05) highest fish yield was obtained from treatment T2 which was 21.47% and 11.89% higher than T1 and T3, respectively.  Significantly (P<0.05) highest cost benefit ratio was recorded with treatment T2 (0.42±0.02) followed by T3 (0.31±0.01) and T1 (0.21±0.01), respectively. Inclusion of appropriate number of fishes at different water layers of pond favoured the yield and economics of carp fattening. The study also suggests focusing on optimal stocking density together with the formulation of low cost feed for carp fattening in ponds under barind area of Bangladesh.

scholarly journals Use of Waste Energy by Adding Shing (Heteropneustes fossilis, Bloch 1797) into Pangus (Pangasianodon hypophthalmus, Sauvage, 1878) Pond

2015 ◽  
Vol 6 (1) ◽  
pp. 209-216
Author(s):  
A Ali ◽  
T Akter ◽  
M Das
Keyword(s):  
Weight Gain ◽  
Economic Benefit ◽  
Survival Rates ◽  
Stocking Density ◽  
Conversion Ratio ◽  
Total Production ◽  
Food Conversion ◽  
Heteropneustes Fossilis ◽  
Pangasianodon Hypophthalmus ◽  
Waste Energy

An experiment was conducted to evaluate the growth, survival and production performances of pangus (Pangasianodon hypophthalmus) and shing (Heteropneustes fossilis) in which shing was used as guest to utilize the waste energy in pangus pond. The experiment was run for four months from July to October, 2008. Fishes were reared in pond no I, II, III with stocking density 150, 250 and 300 per decimal of pangus respectively. Shing was stocked only 10/decimal in pond-I. A complete artificial feed was used containing 23% protein. The weight gain (385.17±2.15g) of pangus was significantly higher in pond-I than that of pond-II (325.15±2.70g) and pond-III (319.30±2.90g). However, the production of pangus per ha were (28158.00±0.10kg) in pond-I, (34159.112±0.50 kg) in pond-II and (37856.208±0.60 kg) in pond-III. Total production of shing in pond-I was 240.57±1.60 kg/ha/yr. The survival rates (%) of pangus under three stocking densities were 98.66%, 85.06% and 80.00% respectively. The food conversion ratio (FCR) of pangasius pond I, II and III were 1.53, 1.81 and 1.84 respectively. The lowest FCR of 1.53 was found in pond-I. The net return of the pond I, II and III were BDT 273503.10, 117456.73 and 107906.60 per ha per year. The addition of shing into pangasius pond as guest invites economic benefit to the pangus culture.DOI: http://dx.doi.org/10.3329/jesnr.v6i1.22067 J. Environ. Sci. & Natural Resources, 6(1): 209-216 2013

Experiment on an integrated rice-fish polyculture system.

2020 ◽  
Author(s):  
Nhut Salem
Keyword(s):  
Common Carp ◽  
Cost Benefit ◽  
Total Body Weight ◽  
Market Prices ◽  
Fish Yield ◽  
Cost Benefit Ratio ◽  
Rice Fish ◽  
Supplementary Feed ◽  
The Cost ◽  
Silver Barb

Abstract An experiment was carried out in Vietnam on an integrated rice-fish polyculture system with three species: common carp (Cyprinus carpio), Nile tilapia (Oreochromis niloticus) and silver barb (Barbonymus gonionotus). Agricultural by-products were used as supplementary feed at a rate of 2-3% total body weight of fish per day. The total fish yield (823 kg ha-1) and fish production (988 kg ha-1 yr-1) at 2 fish m-2 were significantly higher (p<0.05) than at 1 fish m-2 (453 kg ha-1 and 544 kg ha-1 yr-1, respectively). The cost : benefit ratio (1.80) and the cost : profit ratio (1.75) for farm household income at 1 fish m-2 were lower than at 2 fish m-2 (2.08 and 2.02, respectively). This system should be adopted by aquaculture extension programmes to improve rural farmers' income when the market prices for common carp, tilapia and silver barb are sufficiently high to obtain a benefit at the end of the culture cycle.

scholarly journals Introduction of Sahar (Tor putitora) in Cage-Cum-Pond Integration System of Mixed-Sex Nile Tilapia (Oreochromis niloticus)

Our Nature ◽  
1970 ◽  
Vol 5 (1) ◽  
pp. 52-59 ◽  
Author(s):  
RK Yadav ◽  
MK Shrestha ◽  
NP Pandit
Keyword(s):  
Weight Gain ◽  
Nile Tilapia ◽  
Stocking Density ◽  
Daily Weight Gain ◽  
Animal Science ◽  
Integration System ◽  
Fish Yield ◽  
Pond System ◽  
Randomized Design ◽  
Completely Randomized Design

Introduction of sahar in cage-cum-pond integration system of mixed-sex Nile tilapia was evaluated using 15 outdoor cemented ponds of 24 m2 (4.9m × 4.9m) size with 1.25 m water depth placing a cage of 1.2m× 1m × 1m size holding 1 m3 water at the center of each pond at Institute of Agriculture and Animal Science (IAAS), Rampur, Chitwan, for 158 days. The experiment was conducted in a completely randomized design (CRD) with five treatments replicated thrice. The treatments were: large sized Nile tilapia in cage and small sized Nile tilapia in pond (cage-cum-pond system) (T1); cage-cum-pond system with 2 sahar (T2), cage-cum-pond system with 4 sahar (T3), cage-cum-pond system with 8 sahar (T4) and cage-cum-pond system with 16 sahar (T5). Stocking density of caged and pond tilapia was 1 fish/m2 and 2 fish/m2, and size was 78-90 g and 15-16 g respectively. The feed, containing 20% crude protein, was supplied for caged tilapia at the rate of 2% body weight daily. Mean stocking size, harvest size, survival rate, daily weight gain and net fish yield of both caged and pond Nile tilapia were not significantly different among treatments (p > 0.05). Mean harvest weight and daily weight gain of sahar in treatment 2 was significantly higher than other treatments (p < 0.05). NFY of caged tilapia, pond tilapia and combined fish yield were not significantly different among treatments (p > 0.05). Higher numbers of recruits were observed in control and lowest in the treatment 5 suggesting that higher number of sahar in this system effectively controls the tilapia recruits. This experiment showed that addition of sahar in the cage-cum-pond integration system of Nile tilapia effectively controls the number of tilapia recruits and increase NFY.Key words: cage-cum-pond integration, Nile tilapia, Sahardoi:10.3126/on.v5i1.798Our Nature (2007)5:52-59

scholarly journals Effects of Different Protein Level Feeds on the Fingerlings Production of Riverine Endangered Notopterus Chitala (Hamilton, 1882) in Ponds

2020 ◽  
Vol 7 (3) ◽  
pp. 553-563
Author(s):  
Mustafizur Rahman ◽  
Md Abdus Samad ◽  
Md Nahiduzzaman ◽  
Alpana Zaman Lata
Keyword(s):  
Water Quality ◽  
Weight Gain ◽  
Protein Level ◽  
Cost Benefit ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Highest Weight ◽  
Cost Benefit Ratio ◽  
Growth Production ◽  
The Cost

This study was aimed to evaluate the efficiency of three protein level feeds on the fingerlings production of riverine endangered Notopteruschitala (Hamilton, 1882) for a period of two months in ponds. Chital fry (Initial wt, 5.6±0.19 g) were randomly stocked at the rate of 7410 per hector. Feeding trials were conducted under 3 treatments (T1: feed contains 35% protein, T2: feed contains 30% protein, T3: feed contains 25 % protein) each with 3 replications. No significant (P<0.05) difference was observed for all the water quality parameters among the treatments. A suitable range of water quality parameters (temperature, water transparency (cm)), dissolved oxygen (mg/l), pH, alkalinity (mg/l), ammonia) were recorded with the environment of experimental ponds. The treatment had significant effects on weight gain, ADG, SGR among treatments. Highest weight gain (19.31 ± 0.23 g) was observed in T1, lowest (13.96 ± 0.15 g) in T3. SGR (1.65±0.02) and ADG (0.18±0.005) were significantly (P<0.05) highest in T1 followed by T2 and T3. The N chitala exhibited highest survival rate (96.66%) in T1 than T2 followed by T3 (88.89 %). The best FCR value (3.02±0.09) was recorded in treatment T1 with 35% protein contain feed. Relatively, highest benefits (138690±175.36 BDT/ha) were found from treatment T1 compared to other treatments. Similarly, the cost benefit ratio was highest in T1 (1:1.23) and lowest in T3 (0.95). Findings indicated that treatment T1 (35% protein containing feed) was found best in terms of growth, production and economics of N. chital for fingerling production in ponds. Res. Agric., Livest. Fish.7(3): 553-563,  December 2020

scholarly journals Inclusion of Different Level of Khesari for Promotion in Broiler

2019 ◽  
Vol 36 ◽  
pp. 148-156
Author(s):  
Md. H. Azad ◽  
M. R. Tiwari ◽  
N. R. Poudel ◽  
B. M. Shah ◽  
B. K. J.C ◽  
...  
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Agricultural Research ◽  
Body Weight Gain ◽  
Cost Benefit ◽  
Control Group ◽  
Research Station ◽  
Randomized Design ◽  
Cost Benefit Ratio ◽  
Water Feed

An experiment was conducted at Regional Agricultural Research Station, Parwanipur, Bara for 38 days to test the effect of Khesari leaves inclusion in broiler feed and its effect on growth performance. Altogether 135 day-olds Cobb-500 broiler birds were procured from Shivam Hatchery, Birgung and divided into 3 treatments with 3 replications (15 birds in each replication) by using completely randomized design. Concentrate feed was purchased from Posak Feed industry, Birgung. Control group (T1) was fed without inclusion of Khesari leaves and whereas T2 and T3 groups were fed 5% and 10 % Khesari leaves added feed respectively. Diet replaced with 5 % and 10 % Khesari leaves were offered from 14th day of trial to T2 and T3 broilers group respectively. Experimental birds were provided adlib amount of grower feed (B1) for 21 days and that after finisher feed (B3) for 21 days and had easily access to drinking water. Feed intake was recorded daily and body weight gain was measured in 7 days interval. Experiment revealed that highest weight gain was observed in T3 (2.55 kg) followed by T1 (2.48) where inclusion of 10 % Khesari leaves and normal feed respectively, which was also significant among diet groups. Similarly, highest cumulative feed intake was also observed for T3 (4.23 kg) followed by T1 (3.90 kg) which was also significant among diet groups. Experiment suggested that further study should be carried out to precise the appropriate level of organic acids inclusion and higher cost benefit ratio.

scholarly journals Effect of stocking density of fingerlings production of Black carp Mylopharyngodon piceus (J. Richardson, 1846) in pond condition

2017 ◽  
Vol 4 (1) ◽  
pp. 37-44
Author(s):  
Md Abdus Samad ◽  
Mst Lutfunnahar ◽  
Sujit Kumar Chatterjee ◽  
Md Ashrafuzzaman ◽  
Md Selim Reza
Keyword(s):  
Average Length ◽  
Stocking Density ◽  
Cost Benefit ◽  
Black Carp ◽  
Net Profit ◽  
Final Weight ◽  
Cost Benefit Ratio ◽  
Mylopharyngodon Piceus ◽  
Formulated Feed ◽  
Experimental Ponds

An experiment was conducted in pond condition under three treatments for a period of 60 days each with three replications to know the effect of stocking density on growth performance of fingerlings production of Black carp Mylopharyngodon piceus. Stocking density were used at the rate of 240 (T1), 270 (T2) and 300 (T3) fingerlings/decimal, respectively. Initial average length and weight of M. piceus fry were 3±0.02 cm and 1.5±0.01g during stocking in the experimental ponds. The fish were initially fed with 25% protein content formulated feed at 8% of body weight and the rate was reduced to 6% gradually. The water quality variabilities were more or less similar in three treatments within the suitable ranges for aquaculture. The SGR value 3.57±0.006 was recorded in treatment T1 while the lowest value was 3.20±0.009 in T3. Survival rate (%) were significantly higher in T1 (91.33±0.88) where the stocking density was low compared to those in T2 (79.83±0.44) and T3 (77.17±0.6), respectively. The net profit in treatment T1 was (Tk. 475428.58±3.25) and lowest in T3 (Tk. /ha 190138.5±6.15). The highest final weight gain, SGR%, production, net profit and cost benefit ratio were found in treatment T1. In the present study production of M. piceus was found to be highest in lower stocking density. Therefore, it is evident that feeding with higher protein supplement with lower stocking density is effective for optimum growth of M. piceus.Res. Agric., Livest. Fish.4(1): 37-44, April 2017

scholarly journals Feeding frequency on the growth and production of endemic near-threatened Ompok pabda (Hamilton 1822) in pond setup

2021 ◽  
Vol 6 (2) ◽  
pp. 89-102
Author(s):  
Md Ashraful Islam ◽  
Md Abdus Samad ◽  
Dipankar Paul ◽  
Abdulla Al Asif ◽  
Amir Hossain
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Cost Benefit ◽  
The Body ◽  
Feeding Frequency ◽  
Final Weight ◽  
Cost Benefit Ratio ◽  
The Mean ◽  
Effect Of Feeding ◽  
Near Threatened

Growth and production of near threatened Ompok pabda (Hamilton) were examined at different feeding frequencies in the present study. The experiment was conducted for four months in three earthen ponds from 1st April to 31st July 2018 at Tanore Upazila in Rajshahi district, Bangladesh. The experiment was performed using pabda, (Ompok pabda) fingerling (average) to study the effect of feeding frequency on growth performance. The study carried out considering three treatments, namely T1, T2, and T3; while the feeding frequency was two times per day in treatment T1, three times per day in treatment T2, and four times per day in treatment T3. Fish were fed considering three-stage of life span; these were fingerling stage, early growing stage, and growing stage. In the fry stage, the fishes were fed 20% feed, in the fingerlings stage the fish were fed 10% feed and in the growing stage, the fish were fed 8% feed of the body weight. The mean water temperature ranged between 27.13±2.10 and 27.29±2.16 °C among treatments, while water transparency ranged between 31.91±1.58 and 29.96±1.84 cm. pH ranged between 7.62±0.14 and 7.70±0.19; while the mean dissolved oxygen was ranged between 5.35±0.11 and 5.56±0.14 among treatments. The final weight gain was found to be highest (56.36±0.01) in the treatment T2 and lowest (38.23±0.01) in the treatment T3. The SGR value was higher (3.94±0.01) in the treatments T2 followed by treatments T1 and T3. Net weight gain was significantly (p<0.05) higher in feeding frequency three (56.36±0.1), followed by feeding frequency four (38.23±0.1) and feeding frequency two (40.67±0.73). The FCR value ranged between 1.90 and 2.87 among treatments. The growth performance and specific growth rate were significantly (p<0.05) higher in feeding frequency three. The highest (4049.1±0.1 kg/ha/120 days) production was observed in T2. Best cost benefit ratio was gained in treatment T2. Asian Australas. J. Biosci. Biotechnol. 2021, 6 (2), 89-102

scholarly journals Production and economics of carp polyculture in ponds stocked with wild and hatchery produced seeds

2018 ◽  
Vol 6 (1) ◽  
pp. 541 ◽  
Author(s):  
Md. Rafiqual Islam Khan ◽  
Md. Taskin Parvez ◽  
Mohammad Golam Sarowar Talukder ◽  
Md. Akhtar Hossain ◽  
Md. Shamsul Karim
Keyword(s):  
Cost Benefit ◽  
Fish Farming ◽  
Quality Parameters ◽  
Catla Catla ◽  
Hypophthalmichthys Molitrix ◽  
Fish Yield ◽  
Mean Values ◽  
Cost Benefit Ratio ◽  
Total Fish ◽  
Different Sources

Lack of quality carp seeds is one of the major problems for fish production in Bangladesh. This experiment was conducted during July to December 2013 to study the production and economics of carp polyculture using wild and hatchery produced seeds in ponds in Faridpur district, Bangladesh.  Seeds of native major carps (NMCs) (Catla catla, Labeo rohita and Cirrhinus mrigala) and non-native carps (NNCs) (Hypophthalmichthys molitrix, Ctenophryngodon idella, Aristichthys nobilis and Cyprinus carpio) from four different sources were tested in feed and fertilizer based polyculture ponds under controlled mesocosm trials with four treatments (T1–T4), each with four replications. Combination, weight and density of the stocked species were same for all the treatments. Water quality parameters were monitored monthly and mean values were found within suitable range for fish farming. Mean final weight, weight gain, specific growth rate and yield of L. rohita, C. catla and C. mrigala were found significantly (P < 0.05) higher with treatment T1, T3 and T2 respectively. Treatments T1, T2 and T3 varied more significantly (P < 0.05) than treatment T4 for total fish yield and cost benefit ratio.  Polyculture of wild sourced NMCs and hatchery produced NNCs were found more profitable than aquaculture of hatchery produced NMCs and NNCs.

Methods and clinical applications in nuclear cardiology: a position statement

2002 ◽  
Vol 41 (01) ◽  
pp. 3-13 ◽  
Author(s):  
M. Schäfers
Keyword(s):  
Nuclear Cardiology ◽  
Clinical Medicine ◽  
Imaging Techniques ◽  
Cost Savings ◽  
Cost Benefit ◽  
Position Statement ◽  
Electron Beam Tomography ◽  
Partial Functions ◽  
Cost Benefit Ratio ◽  
Medicine Today

SummaryNuclear cardiological procedures have paved the way for non-invasive diagnostics of various partial functions of the heart. Many of these functions cannot be visualised for diagnosis by any other method (e. g. innervation). These techniques supplement morphological diagnosis with regard to treatment planning and monitoring. Furthermore, they possess considerable prognostic relevance, an increasingly important issue in clinical medicine today, not least in view of the cost-benefit ratio.Our current understanding shows that effective, targeted nuclear cardiology diagnosis – in particular for high-risk patients – can contribute toward cost savings while improving the quality of diagnostic and therapeutic measures.In the future, nuclear cardiology will have to withstand mounting competition from other imaging techniques (magnetic resonance imaging, electron beam tomography, multislice computed tomography). The continuing development of these methods increasingly enables measurement of functional aspects of the heart. Nuclear radiology methods will probably develop in the direction of molecular imaging.

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