scholarly journals Management practices in the beel aquaculture system at Rajshahi, northwest Bangladesh

2019 ◽  
Vol 28 ◽  
pp. 43-50
Author(s):  
S Akter ◽  
MR Ali ◽  
MMR Mondol
Keyword(s):  
Management Practices ◽  
Cost Benefit ◽  
Fish Farming ◽  
Farming System ◽  
Quality Parameters ◽  
Exotic Fish ◽  
Resource Manager ◽  
Freshwater Resource ◽  
Cost Benefit Ratio ◽  
Aquaculture Management

Open aquatic system such as beel is an important freshwater resource for agriculture and aquaculture.This study was conducted (July-December 2014) to describe the beel aquaculture management practices in the Hagla Beel at Bagmara upazila under Rajshahi district.The Beel fish farming area was 20.25 ha and irregular in shape with average depth 1.5 m. During the study period, the measured water quality parameters of the beel were within the suitable range for aquaculture. Eight genera of phytoplankton and eight genera of zooplankton were identified from the beel water body. Four native and 4 exotic fish species with sizes ranging from 0.15-1.11 kg were stocked for growing in the beel. At the end of culture period, the production of fish was 2,622.15 kg/ha and cost-benefit ratio (CBR) was 1:1.42. Environmental problems such as increasing of water temperature and decreasing of water level during summer, and parasitic diseases were some of the risks in beel fish farming system. The results of this study should be useful for beel aquaculture, and for the farmers and resource manager for harnessing maximum benefits from the beel resources in Bangladesh. J. bio-sci. 28: 43-50, 2020

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.

scholarly journals Raising of Stocking Materials of Indian Major Carps in Pen Enclosures in Selected Floodplain Wetlands of Assam, India

2007 ◽  
Vol 19 (3) ◽  
Author(s):  
B. K. GORAI ◽  
V. V. SUGUNAN ◽  
B. C. JHA
Keyword(s):  
Cost Benefit ◽  
Quality Parameters ◽  
Specific Conductance ◽  
Mustard Oil ◽  
Catla Catla ◽  
Floodplain Wetlands ◽  
Average Growth ◽  
Fish Stocks ◽  
Indian Major Carps ◽  
Cost Benefit Ratio

Raised stocking materials, fingerling of Indian major carp seeds (Catla catla, Labeo rohita Cirrhinus mrigala) in pens, installed in two floodplain wetlands of Assam viz. Goruchora (Golaghat district) and 46-Morakollang (Morigaon district). The pens were stocked at 30,000 fry•ha-1, in a ratio of 3:2:1 of C. catla, L. rohita and C. mrigala fry, respectively. The average initial length and weight of fry at the time of stocking for C. catla, L. rohita and C. mrigala were 5.45 cm (1.80 g), 4.51 cm (1.15 g) and 4.65 cm (1.12 g), respectively. The fish stocks inside the pens were given supplementary feeds, mustard oil cake and rice polish (1:1) at 5% body weight. The pens were harvested after a rearing period of 145 days with an average growth of C. catla (19.0 cm, 85.1 g), L. rohita (15.8 cm, 52.8 g) and C. mrigala (15.8 cm, 42.9 g) in Goruchora wetland, while in 46- Morakollang wetland it was recorded as 17.0 cm (63.8 g) for C. catla, 15.4 cm (55.9 g) for L. rohita and 14.0 cm (41.5 g) for C. mrigala for further grow-out in the lakes proper. During the period of experimentation, the fluctuations in water quality parameters like water temperature (17.6-29.0o C), transparency (72-102 cm), dissolved oxygen (3.60-16.50 mg•l-1), pH (7.12-9.53), total dissolved solids (46.6-111.3 mg•l-1) and specific conductance (102-232 µS•cm-1) were monitored, too. The production in terms of fish biomass (fingerlings) was estimated at 2106 and 1780 kg•ha-1 in Goruchora and 46- Morakollang wetlands, respectively. The cost-benefit ratio was calculated as 1.40 (Goruchora) and 1.77 (46-Morakollang), which can be considered as significant, economically.

Evaluation of IPM module against major insect pests of green gram, Vigna radiata (L.) Wilczek in lower Gangetic plains of West Bengal

2021 ◽  
pp. 111-115
Author(s):  
Suprava Malik ◽  
Amitava Banerjee ◽  
A. Samanta
Keyword(s):  
Vigna Radiata ◽  
Management Practices ◽  
Insect Pests ◽  
Integrated Management ◽  
Insect Pest ◽  
Cost Benefit ◽  
Green Gram ◽  
Flower Thrips ◽  
Pod Borer ◽  
Cost Benefit Ratio

An experiment was carried out to evaluate the efficacy of integrated management practices over farmers’ practices against insect pest complex of green gram (Vigna radiata L. Wilczek) during kharif season in the ‘A-B’ Block Farm of Bidhan Chandra Krishi Viswavidyalaya in 2019. The results revealed that the incidence of all of the insect pests viz. whitefly, pulse aphid, jassid, flower thrips, gram pod borer, spotted pod borer, blue butterfly, plant bug and pod bug was recorded comparatively less in Integrated Pest Management (IPM) plot as compared to farmers’ practices. The seed yield of green gram was also recorded a higher (1382.22 kg ha-1) in plots treated with integrated approaches as compared to farmer’s practices (476.94 kg ha-1). IPM module recorded maximum cost benefit ratio along with higher gross return and net profit as against farmers’ practices.

scholarly journals Water quality, feeding management and cost-benefit analysis of a fish hatchery in Jessore district of Bangladesh

2016 ◽  
Vol 2 (3) ◽  
pp. 414-421
Author(s):  
Md Monirul Islam ◽  
Rashidul Hassan ◽  
BM Newaz Sharif ◽  
Md Mostafizur Rahaman ◽  
Md Aminur Islam ◽  
...  
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Benefit Analysis ◽  
Fish Hatchery ◽  
Feeding Management ◽  
Cost Benefit Ratio

The study was conducted at Ma-Fatema Fish Hatchery in Jessore from January to March, 2016. The present study was emphasized on water quality parameters, feeding management and cost- benefit analysis. The water quality parameters temperature (0C), pH, dissolved oxygen (DO) (mg/l) and transparency (cm) were measured by Celsius thermometer, pH meter, DO meter and secchi disk, respectively. The proximate composition of feed ingredients was determined by the Association of Analytical Chemists, 1980. Brood fishes were reared all year round in the brood ponds by supplying formulated feeds. Temperature was 19oC -26°C in brood ponds and 18oC-24oC in hatching jars; pH was 6.93–7.87 in brood ponds and 6.79-7.54 in the hatching jars; dissolved oxygen was 4.8-6.3 mg/l in brood ponds and 4.8-6.7 mg/l in hatching jars; transparency was 14-18 cm in the brood ponds. The percentage of farm made feed was protein (27.76%), lipid (4.9%), CHO (18.62%), ash (11.31%), fiber (6.4%), moisture (31.01%). The cost benefit ratios were 1.54, 1.32 and 1.23 and net profits were BDT 49911.67, BDT 24816.67and BDT 16366.67 respectively in January, February and March. Management of brood fish by providing quality feed and physico-chemical parameters of water were maintained in according to scientific procedure. Cost-benefit ratio of the hatchery in common carp production was satisfactory.Asian J. Med. Biol. Res. September 2016, 2(3): 414-421

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 Research Data Strategy: framework and motivating factors

2020 ◽  
Author(s):  
Boyan Angelov
Keyword(s):  
Management Practices ◽  
New Technologies ◽  
Research Work ◽  
Cost Benefit ◽  
Research Data ◽  
Motivating Factors ◽  
Research Organizations ◽  
Cost Benefit Ratio ◽  
Almost All ◽  
The Cost

The need for large amounts of data permeates almost all fields of research. New technologies related to machine learning (deep learning in particular), cloud computing, the Internet of Things (IoT) add to the increased complexity of data-related work and how researchers deal with that. Those trends are accelerating and result in a widespread need for new frameworks to increase the cost-benefit ratio of research work while driving innovation. Modern developments in the private sector, both in technologies and ways of working, can be readily adopted by research organizations. "Data strategy" is an umbrella term for those advancements. This article presents its research variant, Research Data Strategy (RDS), complete with its different elements, the sequence of execution, and supporting activities. This new methodology aims to build on top of existing research data management practices by providing a framework for ensuring innovative science in data-driven research organizations.

scholarly journals Economics and energetics in hybrid sunflower cultivation as influenced by irrigation and fertilizer management practices

2018 ◽  
Vol 10 (3) ◽  
pp. 1018-1025
Author(s):  
Ayon Alipatra ◽  
Hirak Banerjee
Keyword(s):  
Environmental Sustainability ◽  
Management Practices ◽  
Cost Benefit ◽  
Economic Feasibility ◽  
Net Energy ◽  
Energy Productivity ◽  
Efficient Treatment ◽  
Cost Benefit Ratio ◽  
Energy Intensiveness ◽  
Irrigation Levels

The objective of the study was to assess economic feasibility and environmental sustainability in sunflower cultivation as influenced by irrigation and fertilization. A field experiment was conducted during the winter (November-March) of 2011-12 and 2012-2013 in farmer’s field at Madandanga under Chakdaha block of Nadia district in West Bengal (23°22.221'N latitude and 88°22.221'E longitude with an altitude of 12 m above mean sea level), under sub-humid subtropical climatic condition. The crop irrigated thrice (I30/60/80) outperformed other crops which had reduced moisture (I30 and I30/60) in respect of gross revenue (GR). Irrespective of irrigation levels, application of N80P40K40B1.5S25 treatment paid the highest additional GR over RDF. The higher incremental cost-benefit ratio (ICBR) for ‘Aditya’ was observed with N80P40K40B1.5 at all irrigation levels. Estimated energy indices revealed that net energy gain (NEG) was the highest with the supply of N80P40K40B1.5S25 at all irrigation levels. However, maximum values of energy ratio (ER) and energy productivity (EP) were recorded with N80P40K40B1.5 while total specific energy (SE) was higher with N80P40K40S25 for all irrigation levels. Recommended dose of fertilizer (N80P40K40) was observed to be the most energy-intensive treatment with higher energy intensiveness (EI) values. The treatment N80P40K40VC5 was found to be the most energy-efficient treatment with lowest energy intensiveness (EI) values at all irrigation levels, closely followed by the N80P40K40B1.5S25 treatment.

scholarly journals Assessment of Fish Farmers Use of Recommended Management Practices in Oyo State, Nigeria

2021 ◽  
pp. 14-20
Author(s):  
B. Adelodun Oluwatobi ◽  
O. Adekola Festus ◽  
A. Rafiu Rasheedat ◽  
S. Imafidon Ailele
Keyword(s):  
Regression Analysis ◽  
Management Practices ◽  
Tertiary Education ◽  
Sampling Technique ◽  
Fish Farming ◽  
Educational Background ◽  
Primary Data ◽  
Aquaculture Management ◽  
Multistage Sampling ◽  
Recommended Management Practices

The enhancement of fish production through aquaculture can be brought about by enhancing farmers’ utilization of information on new innovations and recommended practices. This study was carried out to assess fish farmers’ use of recommended management practices in Oyo state. One hundred and fifty fish farmers were selected from the four agricultural zones in the state using multistage sampling technique. Primary Data were analyzed using descriptive and multiple regression analysis. Most of the fish farmers were male (88%), 78% had tertiary education and 68% had <11years of experience in fish farming. The study revealed that the rate of adoption of recommended aquaculture management practices was 46.7%. The regression analysis also revealed a linear relationship between the socio-economic characteristic and adoption of RAMP (R2 = 0879). Educational background (p<0.05), years of experience (p<0.1) and method of farming (p<0.05) were positively significant. The use of these management practices were also limited by different factors as revealed in the study. In conclusion, the adoption of recommended management by fish farmers is not encouraging enough. Strong cooperation between the fish farmers and extension agents was highly recommended.

Rotation farming of rice and shrimp in the Mekong Delta, Vietnam.

2020 ◽  
Author(s):  
Hoang Minh Truong
Keyword(s):  
Water Quality ◽  
Survival Rate ◽  
Saline Water ◽  
Penaeus Monodon ◽  
Mekong Delta ◽  
Cost Benefit ◽  
Farming System ◽  
Wet Season ◽  
Benefit Ratio ◽  
Cost Benefit Ratio

Abstract Rotation farming of rice and shrimp is a typical farming system in the Mekong Delta of Vietnam, where saline water intrusion takes place seasonally. In this area, shrimp (Penaeus monodon) culture is carried out during the dry season and rice is cultivated during the rainy season. The growth, survival rate, water quality variation and cost: benefit ratio of the system were monitored in three experimental shrimp farms (1-1.3 ha per pond) in Soc Trang province and three others (0.4-0.5 ha per pond) in Bac Lieu province. The water quality did not vary much; the growth rate was 0.23 to 0.29 g day-1, average survival rate reached 89%, average shrimp yield was 392 kg ha -1 and the cost: benefit ratio was 1:4.6 to 4.8. However, white spot syndrome virus (WSSV) occurred in the farming system, especially in seasonal transition (dry and wet season).

scholarly journals Diet and Feeding Habits of Cyprinus carpio in Relation with Water Quality of Integrated Rice-Fish Farming Ecosystem

Our Nature ◽  
2014 ◽  
Vol 11 (2) ◽  
pp. 138-151 ◽  
Author(s):  
Md. Mostafizur Rahman Mondol ◽  
Md. Mosaddequr Rahman ◽  
Dil Afroz Nahar ◽  
Ferdous Ahamed ◽  
Md. Al-Amin Sarker ◽  
...  
Keyword(s):  
Water Quality ◽  
Cyprinus Carpio ◽  
Quantitative Estimation ◽  
Feeding Habits ◽  
Fish Farming ◽  
Farming System ◽  
Quality Parameters ◽  
Fish Growth ◽  
Gut Contents ◽  
Rice Fish

This study describes the diets and feeding habits of Cyprinus carpio in integrated rice-fish farming system in the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh, Central Bangladesh during May 1999 to August 1999. Percentage of frequency of occurrence and percentage in number methods were applied for the qualitative and quantitative estimation of plankton. The water quality parameters recorded during the study were within the suitable range for optimal fish growth and plankton populations were also abundant in the water of the rice plots. The phytoplankton population recorded from the gut contents of C. carpio was under 4 groups (viz., Chlorophyceae, Euglenophyceae, Cyanophyceae, Bacillariophyceae) and the zooplankton under 3 groups (viz., Rotifera, Cladocera, Copepoda). Bacillariophyceae and Chlorophyceae were the dominant phytoplankton group while Rotifera was the dominant zooplankton group in the gut contents of C. carpio. This study also revealed that, gut contents of C. carpio was composed of 48.47% phytoplankton and 51.53% zooplankton indicating omnivorous nature of the fish. The availability of plankton population in the rice plots and the food and feeding habits of C. carpio suggest that, this fish could be a vital candidate for integrated rice-fish aquaculture.

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