scholarly journals MODIFIKASI MEDIA SPIRULINA PLATENSIS SEBAGAI UPAYA PEMANFAATAN AIR LIMBAH BUDIDAYA IKAN LELE

2018 ◽  
Vol 6 (2) ◽  
pp. 153-164
Author(s):  
Hendro Widyantoro ◽  
Marini Wijayanti ◽  
Sefti Heza Dwinanti
Keyword(s):  
Waste Water ◽  
Spirulina Platensis ◽  
Fish Farming ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Significant Parameter ◽  
Randomized Design ◽  
Water Pond ◽  
Benefit Cost ◽  
Modified Media

ABSTRACTThe purpose of this study was to determine the best fertilizer compotition that was made from technical fertilizer and waste water of cat fish farming. This experimental was conducted at Aquaculture Laboratory, Faculty of Agriculture, Sriwijaya University. It used complete randomized design (CRD) method which had five treatments and three replications, the waste water from catfish pond (P0), waste water from catfish pond + 25% technical fertilizer (P1), waste water from catfish pond + 50% technical fertilizers (P2), the waste water from catfish pond + 75% technical fertilizers (P3), the waste water from catfish pond + 100% technical fertilizers (P4). The results showed that the best maximum density of S. platensis was P3 about 3.98 g l-1, and growth rate was equal to 2.80% day-1. The most significant parameter of water quality was ammonia which decreased until 82.78%. Besides, it was more beneficial than others based on Return Cost Ratio (R/C ratio) and Benefit Cost Ratio (B/C ratio) which were 3.66 and 2.66 respectively. Keywords: Spirulina platensis, waste water pond of catfish, modified  media

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 Economic Analysis of Fish Farming in Punjab, Pakistan

2020 ◽  
Vol 6 (3) ◽  
pp. 625-637
Author(s):  
Muhammad Umair Aslam ◽  
Nasir Nadeem ◽  
Irfan Ahmed Baig ◽  
Umer Ijaz Ahmed
Keyword(s):  
Economic Analysis ◽  
Fish Farming ◽  
Cost Ratio ◽  
Net Income ◽  
Socioeconomic Conditions ◽  
Fish Farms ◽  
Land Rent ◽  
Benefit Cost Ratio ◽  
Crop Farming ◽  
Benefit Cost

Fish consumption is very less in Pakistan as compared to the world. The study was designed to conduct the economic analysis of the fish farming. Two districts were selected with the highest number of fish farms, i.e. Muzaffargarh and Khanewal. A total of 50 fish farms from both study areas were selected randomly for the study. Economic analysis was carried out from the collected data to estimate the profitability of fish farming. In order to make a comparison of profitability of fish farming with crop cultivation on per acre basis, data from 50 farmers from crop sector were also collected. The results revealed that fish farming was more profitable as compared to crop farming in the study area. Net income per acre was estimated at Rs. 252426 from fish farming as compared to net income per acre of Rs. 58612 from wheat-cotton, Rs. 72662 from cotton-rice and Rs. 53290 from sugarcane cultivation. The benefit cost ratio (BCR) of fish farming was calculated 1:1.52 and 1: 1.74 with and without land rent respectively. It illustrates that the enterprise yields 1.52 rupees and 1.74 rupees for every rupee invested. On the basis of results, it is suggested that fish farming should be promoted, especially in the areas of saline soils to enhance food security and uplifting the socioeconomic conditions of small farmers.

scholarly journals ANALISIS FINANSIAL USAHABUDIDAYA IKAN NILA (Oreochromis niloticus) DI KARAMBA JARING TANCAP DI DESA SINUIANKECAMATAN REMBOKEN

2017 ◽  
Vol 4 (8) ◽  
Author(s):  
Omega V. Sambuaga ◽  
Lexy K. Rarung ◽  
Swenekhe S. Durand
Keyword(s):  
Net Present Value ◽  
Fish Farming ◽  
Cost Ratio ◽  
Profit Rate ◽  
Benefit Cost Ratio ◽  
Operating Profit ◽  
Net Cages ◽  
Break Even Point ◽  
Benefit Cost ◽  
The Village

Abstract This study aims to review knowing the state of the District Sales Manager village Sinuian Remboken And find out if the fish farming in net cages step feasible OR feasible for the review run. The basic method basis Of Research Singer Namely Studies CASE, data retrieval is done Operates census where respondents Its taken is 100% of a population of Fishermen fish of tilapia in the village Sinuian, data collected is data primary data the collected with how to observe and secondary data in the form evidence, notes OR statements of historical Yang has arranged hearts archives for review analyzing fish farming with analysis methods operating profit data such as net income, the rate of profit, benefit cost ratio, profitability, break-even point, the payback period, net present value, internal rate and returns. Based on the analysis in the financial, fish farming in net cages step in the Village Sinuian eligible to run because the value of a positive operating profit, profit rate of fish farming reached 57.23%, 92.22% profitability, the value of the benefit cost ratio> 1 namely 1.57; BEP or break-even point is BEP sales of Rp. 24,562,016 and BEP 982.48kg unit further investment return rate of tilapia fish farming are 1 year 1 month, with a 92.09% IRR, NPV 329,059,572.14. Keywords: cage nets step, financial analysis, tilapia Abstrak Penelitian ini bertujuan untuk Mengetahui keadaan umum Desa Sinuian Kecamatan Remboken dan mengetahui apakah usaha budidaya ikan di karamba jaring tancap layak atau tidak layak untuk dijalankan. Metode dasar dari penelitian ini yaitu studi kasus, pengambilan data dilakukan secara sensus dimana responden yang diambil adalah 100% dari populasi nelayan pembudidaya ikan nila di Desa Sinuian, data yang dikumpulkan adalah data primer yaitu data yang terkumpul dengan cara observasi dan data sekunder berupa bukti, catatan atau laporan historis yang telah tersusun dalam arsip untuk menganalisis usaha budidaya ikan dengan metode analisis data seperti operating profit, net profit, profit rate, benefit cost ratio, rentabilitas, break event point, payback period, net present value, dan internal rate of return. Berdasarkan hasil analisis secara finansial, usaha budidaya ikan di karamba jaring tancap di Desa Sinuian layak untuk dijalankan karena nilai operating profit positif, profit rate dari usaha budidaya ikan ini mencapai 57,23%, rentabilitas 92,22%, nilai benefit cost ratio  >1 yaitu 1,57; BEP atau titik impas yaitu BEP penjualan Rp. 24,562,016dan BEP satuan 982.48kg selanjutnya tingkat pengembalian investasi dari usaha budidaya ikan nila ini adalah 1 tahun 1 bulan, dengan IRR 92,09%, NPV 329,059,572.14. Kata Kunci : Karamba jaring tancap, analisis finansial, ikan nila

scholarly journals Digestibility of diets with flour fish silage for the growing of arawana (Osteoglossum bicirrhossum)

2016 ◽  
pp. 5177-5188
Author(s):  
Mario Paz A ◽  
John Meneses R ◽  
Jorge López M
Keyword(s):  
Growth Parameters ◽  
Energy Utilization ◽  
Experimental Unit ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Growing Period ◽  
Randomized Design ◽  
Length Increase ◽  
Completely Randomized Design ◽  
Benefit Cost

ABSTRACT Objective. The purpose of this research was to evaluate the digestibility of different nutritional and energy components of artificial diets containing flour fishsilage used in growing of arawana fingerlings (O. bicirrhossum). Materials and methods. 240 fingerlings distributed in 12 tanks with 20 fish per experimental unit were handled, in a completely randomized design made up of 4 treatments with three replicates, each with inclusions of 0 (0ESH), 10 (10ESH), 20(20ESH) and 30% flour fish silage (30ESH) of treatments T0, T1, T2 and T3 respectively; fromflour fish silagein order to formulate isoenergetic and isonitrogenous diets in the different treatments to avoid sources of miscalculation of the experimental variables. Results. High digestibility coefficients were observed in treatments T1 (10ESH) and T3 (30ESH). The protein, lipid and energy utilization ratios were greater than 60%, which shows the importance of including flour fish silage as a source of protein to improve the various growth parameters. Significant differences between treatments were found in the increase of length (p≤0.05), showing that the T1 was the best treatment with an average of 1.21±0.29 cm. Conclusions. According to the coefficients of digestibility, length increase and benefit – cost ratio, the best treatment was T1 (10ESH) used to feed arawana (O. bicirrhossum), during the growing period, demonstrating the economic and ecological advantages for utilization of this source of protein in aquaculture. RESUMEN Objetivo. Analizar la digestibilidad de los diferentes componentes nutricionales y energéticos en dietas balanceadas con niveles de harina de hidrolizado de vísceras de cachama en el alevinaje de arawana (O. bicirrhossum). Materiales y métodos. Se evaluaron 240 alevinos, distribuidos en 12 acuarios a razón de 1 animal/5 L. Se utilizó un diseño completamente al azar, conformado por cuatro tratamientos con tres réplicas cada uno, con inclusiones de 0 (0ESH), 10 (10ESH), 20 (20ESH) y 30% de extracto seco de hidrolizado de vísceras de cachama (30ESH) para los tratamientos T0, T1, T2 y T3 respectivamente; para evitar fuentes de error en el cálculo de las variables experimentales, se formularon dietas isoenergéticas e isonitrogenadas. Resultados. Se detectaron diferencias estadísticas significativas en el incremento de longitud (p≤0.05), indicando que el T1 (10ESH) es el mejor tratamiento con un promedio de talla de 1.21 ±0.29 cm, además, se obtuvieron coeficientes de digestibilidad superiores al 60% en los tratamientos T1 (10ESH) y T3 (30ESH) en lo referente a proteína, lípidos y Coeficientes de Utilización Energética (CUE); demostrando la importancia de incluir el extracto seco de hidrolizado de vísceras de cachama, en las dietas de los peces para mejorar las distintas variables zootécnicas, teniendo en cuenta la importancia acuariofílica de la especie. Conclusiones. De acuerdo con los coeficientes de digestibilidad, incrementos de longitud y la relación beneficio – costo el mejor tratamiento fue el T1 (10 ESH) en dietas de levante para O. bicirrhossum; demostrando las ventajas económicas y ecológicas de la incorporación de esta materia prima en la alimentación acuícola.

scholarly journals An Economic Study of Low Lying Inland Fish Farming in Selected Areas of Kishoreganj District

2013 ◽  
Vol 23 (1-2) ◽  
pp. 81-90
Author(s):  
MT Uddin ◽  
I Farjana
Keyword(s):  
Fish Farming ◽  
Multiple Regression Model ◽  
Cost Ratio ◽  
Farming Practices ◽  
Marginal Value ◽  
Benefit Cost Ratio ◽  
Level Data ◽  
Use Efficiency ◽  
Mathematical Analyses ◽  
Benefit Cost

The study was designed to examine the low lying inland fish farming practices of Karimganj upazila under Kishoreganj districts. Field level data were collected through direct interview using semi-structured questionnaire. Eighty sample farmers were selected purposively from the study areas. Six types of farming practices were identified in the study area among which only two types were prominent i.e., pond fish farming and Beel fish farming. Tabular, statistical and mathematical analyses were done to achieve the major objectives. The benefit cost ratio in Beel fish farming was 2.86 and in case of pond fish farming it was 1.95. Multiple regression model was used to explain the variation of gross return of pond and Beel fish farming and it was found that coefficients of human labour, feed, cowdung and manure had significant impact on gross return, whereas coefficients of feed, harvesting and making sanctuary had significant impact on gross return of Beel fish farming. Resource use efficiency was calculated by the ratio of marginal value product and marginal factor cost. Finally, the study identified some important problems of low lying inland fish farming and suggested probable solutions relating to the problems.DOI: http://dx.doi.org/10.3329/pa.v23i1-2.16619Progress. Agric. 23(1 & 2): 81 – 90, 2012

scholarly journals Feasibility Analysis of Freshwater Fish Farming Business Development in Pringsewu District

AQUASAINS ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 815
Author(s):  
Muhiddin Sirat ◽  
Shofyan Shaleh ◽  
Ratna Ermawati ◽  
Muhammad Mirandy Pratama Sirat ◽  
Deny Sapto Chondro Utomo
Keyword(s):  
Freshwater Fish ◽  
Fish Farming ◽  
Business Development ◽  
Production Costs ◽  
Feasibility Analysis ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Management Aspect ◽  
Benefit Cost ◽  
Financial Aspect

This research has two aims, the first was to see and analyze the business of freshwater fish farming in Pringsewu District which is feasible or not to be developed. The second aim was to find out whether the freshwater fish farming business in Pringsewu District remain feasible to be developed if there was a decrease in production levels and an increased in production costs. This research analyzes several aspects of business feasibility, namely marketing aspect, production aspect, management aspect dan financial aspect. In the financial aspect, two approaches were used, that were analysis of unpaid business feasibility using the Benefit Cost Ratio (B/C Ratio), Break event point (BEP), Return On Invesment (ROI) analysis tools and discounted business feasibility analysis with the Net Present Value (NPV), Net Benefit Cost Ratio (Net B/C), Internal rate of retur (IRR), Gross Benefit Cost Ratio (Gross B/C), Payback period analysis tools. The results of this study indicate that the aspects of marketing, production aspect, and management aspect have the potential to be developed, as well as the financial aspects with the feasibility analysis of non-discounted shows that the business of freshwater fish farming in Pringsewu District is feasible to be developed. The results of the sensitivity analysis also show that the business is still feasible to be developed despite a decline in production levels and an increased in production costs. Keywords : Business Development, Business Feasibility, Project Evaluation, Freshwater Fish Farming

scholarly journals ANALISIS KELAYAKAN USAHA BUDIDAYA IKAN SISTEM KARAMBA JARING TANCAP DI DESA TALIKURANKECAMATAN REMBOKEN KABUPATEN MINAHASA PROVINSI SULAWESI UTARA

2016 ◽  
Vol 4 (7) ◽  
Author(s):  
Claudio David Togas ◽  
Grace O Tambani ◽  
Nurdin Jusuf
Keyword(s):  
Secondary Data ◽  
Fish Farming ◽  
Farming System ◽  
Primary Data ◽  
Cost Ratio ◽  
Profit Rate ◽  
Benefit Cost Ratio ◽  
Operating Profit ◽  
Break Even Point ◽  
Benefit Cost

Abstract Tondano lake waters used by communities around the lake, with the most striking activity is fish farming in net cages step system. Karamba system of fish farming Nets Plug (KJT) from year to year tend to grow rapidly. This was driven by economic stimulus optimally if farmers can increase the income of the people living around the lake. Karamba system aquaculture nets Plug (KJT), when viewed in terms of socioeconomic give meaning to support the life of coastal communities particularly Lake Tondano. Talikuran village is one of the villages in the area of West Lake Tondano whose inhabitants livelihood as farmers freshwater fish. Feasibility of business investment is necessary to specify in the decision whether the business will be run is profitable or not. According Primyastanto (2010) suppression purposes of this analysis on the feasibility, including the determination of investment costs, operating expenses and receipts. The method used in this study is a survey, namely by taking a sample of the population and the questionnaire as a data collection tool that principal (Singarimbun and Effendi, 1995). Data taken in this research include primary data and secondary data. Data were collected by observation, interview and questionnaire. Based on analysis of fish farming system in the village of Karamba Nets Step on the Talikuran eligible to run because the value Operating Profit (OP) is Rp. 18.3 million. For value Profit Rate (PR) 66.06%, while the value of Benefit Cost Ratio (BCR) 1.66. Of the fish farming is categorized as good as having a value of return 87.32%. The return on investment from the fish farming 1:15 that year means the business is feasible to run because the investment payback period 1 year 1 month 24 days. Break Even Point (BEP) of the fish farming ie sales value of Rp. 9,027,777 with a unit value of 361.11 kg. The net gain from the cultivation of fish in nets Karamba Plug Rp. 13.425 million, - in one year. Keyword : cages step system, aquaculture, fisibility Abstrak Perairan danau Tondano dimanfaatkan oleh masyarakat disekitar danau, dengan kegiatan yang paling menyolok adalah usaha budidaya ikan dalam sistem karamba jaring tancap.Usaha budidaya ikan sistem Karamba Jaring Tancap (KJT) dari tahun ke tahun cenderung berkembang pesat. Hal ini didorong oleh rangsangan ekonomi jika pembudidaya secara optimal bisa meningkatkan pendapatan masyarakat yang tinggal disekitar Danau.Kegiatan budidaya sistem Karamba Jaring Tancap (KJT),jika dilihat dari segi sosial ekonomi sangat memberikan arti untuk menunjang kehidupan khususnya masyarakat pesisir Danau Tondano. Desa Talikuran merupakan salah satu Desa yang berada di wilayah Barat Danau Tondano yang penduduknya bermata pencaharian sebagai pembudidaya ikan air tawar. Kelayakan investasi usaha sangat dibutuhkan untuk menentukan dalampengambilan keputusan apakah usaha yang akan dijalankan tersebut menguntungkan atau tidak. Menurut Primyastanto (2010) penekanan tujuan analisis ini pada kelayakan usaha, meliputi penentuan biaya investasi, biaya operasional dan penerimaan. Metode yang digunakan dalam penelitian ini adalah survei, yaitu dengan mengambil sampel dari satu populasi dan menggunakan kuesioner sebagai alat pengumpul data yang pokok (Singarimbun dan Effendi, 1995).Data yang diambil dalam penelitian ini meliputi data primer dan data sekunder. Pengambilan data dilakukan dengan teknik observasi, wawancara dan kusioner. Berdasarkan hasil analisis usaha budidaya ikan sistem Karamba Jaring Tancap di Desa Talikuran tersebut layak untuk dijalankan karena nilai Operating Profit (OP) yaitu Rp. 18.300.000. Untuk nilai Profit Rate (PR) 66,06%, sedangkan nilai Benefit Cost Ratio (BCR) 1,66. Dari usaha budidaya ikan tersebut termasuk kategori usaha yang baik karena mempunyai nilai rentabilitas 87,32%. Tingkat pengembalian investasi dari usaha budidaya ikan tersebut 1.15 tahun itu berarti usaha ini layak untuk dijalankan karena waktu pengembalian investasi 1 tahun 1 bulan 24 hari. Break Even Point (BEP) dari usaha budidaya ikan tersebut yaitu nilai penjualan sebesar Rp. 9.027.777 dengan nilai satuan sebesar 361,11 kg. Keuntungan bersih dari usaha budidaya ikan di Karamba Jaring Tancap Rp. 13.425.000,-dalam satu tahun. Kata kunci : jaring tancap, budidaya, kelayakan usaha

scholarly journals ANALISIS FINANSIAL USAHA BUDIDAYA IKAN KUWE (CARANX SP) KERAMBA JARING TANCAP DI KELURAHAN BATULUBANG KOTA BITUNG

2015 ◽  
Vol 3 (5) ◽  
Author(s):  
Jeilina Bawia ◽  
Steelma V. Rantung ◽  
Jardie A. Andaki
Keyword(s):  
Financial Analysis ◽  
Fish Farming ◽  
Production Costs ◽  
Cost Ratio ◽  
Profit Rate ◽  
Benefit Cost Ratio ◽  
Operating Profit ◽  
Net Profit ◽  
Break Even Point ◽  
Benefit Cost

Abstract This study reviews the potential development project of Giant Trevally fish farming in Pen Culture seen from the financial aspect in the Batulubang village, Bitung City. This study aims to determine the feasibility of Giant Trevally fish farming in Pen Culture in the Batulubang Village Bitung City by using financial analysis. The calculation result includes the financial aspects of the calculation of operating profit (OP) of Rp.60.435.500, can be used for the next production costs, net profit Rp.51.435.833, so that continuity can be guaranteed because the gains are positive, the profit rate of 103.72% so that the business carried on quite profitable, earnings amounted to 260.63% indicates the ability of farmers to investments available to generate very good profits, benefit cost ratio (B / C Ratio) of more than one is 2.04 then this business is feasible, Break Even Point (BEP) sales of Rp.15.043.994 or BEP unit amounted to 334.31 Kg for Pen Culture cultivation relatively can be achieved, Return On Investment (ROI) is 0.38 years, or 4.6 month. The calculations show that Giant Trevally Fish cultivation using Pen Culture in the Batulubang village Bitung City is financially viable. Key words : Financial Analysis, Giant Trevally Fish, Pen Culture, Batulubang Village Abstrak Penelitian ini mengkaji potensi pengembangan proyek usaha budidaya ikan kuwe dalam keramba jaring tancap dilihat dari aspek finansial di kelurahan Batulubang Kota Bitung. Penelitian ini bertujuan untuk mengetahui kelayakan usaha budidaya ikan kuwe keramba jaring tancap di Kelurahan Batulubang Kota Bitung dengan menggunakan analisis finansial. Hasil perhitungan aspek finansial meliputi perhitungan nilai operating profit (OP) sebesar Rp.60.435.500, dapat digunakan untuk biaya produksi berikutnya, net profit sebesar Rp.51.435.833, sehingga dapat dijamin keberlangsungannya karena keuntungan bersifat positif, profit rate sebesar 103,72% sehingga usaha yang dijalankan cukup menguntungkan, rentabilitas sebesar 260,63% menunjukkan kemampuan pembudidaya dengan investasi yang tersedia untuk menghasilkan keuntungan sangat baik, Benefit Cost Ratio (B/C Ratio) lebih dari satu yaitu 2,04 maka usaha ini layak dilaksanakan, Break Even Point (BEP) penjualan sebesar Rp.15.043.994 atau BEP satuan sebesar 334,31 Kg untuk usaha budidaya keramba jaring tancap relatif dapat dicapai, jangka waktu pengembalian investasi atau Return Of Investment (ROI) adalah 0,38 tahun atau 4,6 bulan. Hasil perhitungan menunjukkan bahwa usaha budidaya ikan Kuwe dengan menggunakan Keramba Jaring Tancap di kelurahan Batulubang Kota Bitung secara finansial layak dijalankan. Kata Kunci : Analisis Finansial, Ikan Kuwe, Keramba Jaring Tancap, Kelurahan Batulubang

scholarly journals The economic viability of the inclusion of urea in the ration for feedlot lambs

2019 ◽  
Vol 20 ◽  
Author(s):  
Sandra Rozanski ◽  
Diana Rosana Vivian ◽  
Luciana Helena Kowalski ◽  
Roberto Rochadelli ◽  
José Antônio de Freitas ◽  
...  
Keyword(s):  
Economic Viability ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Randomized Design ◽  
Net Revenue ◽  
Quadratic Response ◽  
Economic Indexes ◽  
Feedlot Lambs ◽  
The Cost ◽  
Benefit Cost

SUMMARY The aim of this study was to evaluate the economic viability of the inclusion of urea in the ration provided to feedlot lambs. Twenty-four non-castrated male lambs, crossbred Dorper, with 2-5 months of age and a body weight (BW) of 25.0 ± 4.3 kg were used. A completely randomized design with four treatments and six replicates was adopted, in which the treatments were urea levels of 0.0, 0.5, 1.0 and 1.5% in the ration, on a dry matter (DM) basis. Lambs were fed ad libitum for 56 days and slaughtered at a BW of37.9 ± 5.1 kg. The analyzed economic indexes were the cost of the rations, cost of marginal factor (CMF), revenue of marginal factor (RMF), net revenue (NR) and benefit: cost ratio (BCR). The ration without urea presented the highest cost (0.30 US$/kg DM) and the ration with 1.0% DM of urea had the lowest cost (0.23 US$/kg DM). The CMF had a quadratic response to the urea level, reaching the lowest value (0.28 US$/day) with the addition of 0.9 to 1.0% DM of urea. The lowest and the highest NR values were obtained from the rations without and with 1.5% DM of urea, respectively (0.26 and 0.34 US$/day). The ration without urea had a worse BCR (1.74), whereas the ration with 1.0% DM of urea resulted in a better BCR (2.09). A better economic return for lambs finishing in feedlots is obtained with rations containing 1.0 to 1.5% DM of urea.

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

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