Microsoft Word - 59-Article Text-103-1-2-20210420 ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology The American Journal of Agricultural Science, Engineering and Technology (AJASET) is blind peer reviewed international journal publishing articles that emphasize research, development and application within the fields of agricultural science, engineering and technology. The AJASET covers all areas of Agricultural Science, Engineering and Technology, publishing original research articles. The AJASET reviews article within approximately two weeks of submission and publishes accepted articles online immediately upon receiving the final versions. Published Media: ISSN: 2158-8104 (Online), 2164-0920 (Print). Frequency: 2 issues per year (January, July) Area of publication: Agricultural Science, Engineering and Technology. The subjects covered by the journal includes but not limited to: Agriculture Agricultural Economics and Agri-business Agricultural Engineering Agricultural Statistics Agricultural Extension and Development Agro-forestry and Ecotourism Agronomy Agro-tourism Animal Science and Nutrition Applied Agriculture Applied Economics and Finance Aquaculture Bioinformatics Biotechnology and Biochemistry Climate Change and Green Technology Collaborative Engineering Computer Science and Engineering Computational Biology Crop Science and Production Dairy Science & Poultry Science Decision Support System Entomology Environmental Science and Extension Dental and Medical Science Experimental Agriculture Food science, Engineering and Technology Genetics Technology Geophysics GIS, GPS, and Remote Sensing Horticultural Science ICT for Agricultural Development Irrigation and Water Resource Engineering Land Use and Development Mathematics Modeling of Crop and Animal System Pathology and Plant Protection Fisheries Plant Breeding and Crop Science Post-harvesting Technique and Technology Precision Agriculture Production Engineering Social Science and Agricultural Development Soil Science Tropical Agriculture Veterinary Science and Technology ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology EDITORIAL BOARD Chief Editor Dr Mamun-Or-Rashid Professor, Dhaka University, Bangladesh Board Members Dr. Sumit Garg, IL, USA Professor Dr. James J. Riley, The University of Arizona, USA Dr. Ekkehard KÜRSCHNER, Agriculture Development Consultant, Germany Professor Dr. Rodriguez Hilda, USA Professor Dr. Michael D. Whitt, USA Professor Dr. Wael Al-aghbari, Yemen Dr. Clement Kiprotich Kiptum, University of Eldoret, Kenya Managing Editor Md. Roshidul Hasan Professor, Department of Computer Science and Information Technology, Bangabandhu Sheikh Mujibur Rahman Agricultural University ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology 19 EFFECT OF COMMERCIAL FEEDS ON GROWTH AND PRODUCTION PERFORMANCE OF SHRIMP (PENAEUS MONODON) IN BAGERHAT COASTAL PONDS OF BANGLADESH D Sutradhar1, M S Islam2, M Akter3, I N Suravi4, I Jahan5, N C Roy6 DOI: http://doi.org/10.5281/zenodo.4716476 ABSTRACT The experiment was conducted over 120 days from March to June 2019 in Bagerhat sadar upazila, Bagerhat. The study was categorized into four treatments indicated as T1 (ACI feed), T2 (Quality feed), T3 (Mega feed) and T4 (control) with three replicates. The experimental ponds were stocked with shrimp PL at same density of 4 nos./m2. Ponds were treated with agricultural lime based on soil and water pH and fertilized with urea and Triple Super Phosphate depending on water transparency and depth. Different water quality parameters were determined at ten-day intervals. Parameters of water were within acceptable ranges of shrimp culture. Higher growth (30.36 g) of shrimp was achieved in T2 compared to T1 (28.53 g), T3 (27.43 g) and T4 (22.85 g). Growth and survival rate of shrimp were comparatively lower in T4 at the same stocking density. Significantly (p<0.05) higher production of shrimp was obtained in T2 (971.52 kg/ha) than those of T1 (855.90 kg/ha), T3 (757.07 kg/ha) and T4 (566.68 kg/ha). Highest net profit (US$ 2570.2/ha) of shrimp farming was found in T 2 than that of T 1 (US$ 2105.7), T 3 (US$ 1786.6) and T 4 (US$ 1298.1). Results of the study indicate that among different commercial feeds Quality feed (T2) is better than other feeds in respect of survival rate, growth, production and net profit. So, farmers may be encouraged to use Quality feed for getting higher production and significant return in a short period of time. Keywords: Penaeus monodon, growth, production, water quality parameters, net profit. 1D Sutradhar, MS student, Department of Coastal and Marine Fisheries, Sylhet Agricultural University, Bangladesh, 2M S Islam, Professor, Department of Coastal and Marine Fisheries, Sylhet Agricultural University, Sylhet-3100; Email: islamms2011@yahoo.com 3M Akter, Lecturer, Department of Coastal and Marine Fisheries, Sylhet Agricultural University, Bangladesh 4I N Suravi, Lecturer, Department of Coastal and Marine Fisheries, Sylhet Agricultural University, Bangladesh 5I Jahan, MS student, Department of Coastal and Marine Fisheries, Sylhet Agricultural University, Bangladesh 6N C Roy PhD, Professor, Department of Fish Biology & Genetics, Sylhet Agricultural University, Sylhet, Bangladesh, E-mail: ncroy@sau.ac.bd; ORCID: https://orcid.org/0000- 0001-8157-4898 ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology 20 INTRODUCTION Bangladesh is considered one of the most suitable country in the world for shrimp and prawn farming, because of its resources and favorable agro–climatic conditions. A sub-tropical climate and a vast area of shallow waterbodies provide a unique opportunity for shrimp and prawn production (Islam et al., 2008). The culture of shrimp and prawn in the coastal zone is a major export earning activity for Bangladesh. Total shrimp and prawn production including capture has been increased from 1.60 lakh MT in 2002-03 to 2.39 lakh MT in 2018-19 (DoF, 2020). This culture is ongoing in the coastal belt during the early 1980s to supply international markets and earning foreign currencies (Islam et al., 2001). The giant tiger shrimp, Penaeus monodon is the largest brackish water shrimp, which is widely distributed throughout the Indo-Pacific region. It has been harvested from the sea and cultured in many countries of the world. The most important characteristic is its fast growth. It is a euryhaline and grow well in salinities from 5 ppt to 25 ppt. Survival rate is usually between 70-80% and it adapts well to intensified culture system (Liao, 1987). Bailey-Brock and Moss (1992) described shrimp as omnivorous scavengers, opportunistic omnivores, detritus feeders, carnivores and predators. They consume detrital aggregates including bacteria, meiofauna, protozoa, micro-algae, zooplankton, macrobenthos and other items (Dall, 1968; Chong and Sasekumar, 1997; Moriarty, 1997). The widely diverse feeding behaviors offer possibility to culture shrimp in polyculture as either the main species or a secondary species. The nutrients in artificial feeds are well balanced to meet the nutritional needs of the cultured shrimp. The nutrients that should be included in shrimp feeds include protein for body building, fat for normal functioning of the body and for energy, carbohydrates for energy, mineral salts for bone structure and body functions and vitamins for good health. Regular supply of artificial feeds in shrimp culture pond generally increases shrimp production two times than that without artificial feeding (Shofiquzzoha and Alam, 2008). Locally available ingredients such as fish meal, soya, maize and wheat are some ingredients that provide the nutrients listed above. The cost of feeds is the highest cost of production in commercial shrimp/fish farming. It ranges from 40% to 60% of the total cost of production. Use of formulated low-cost feed with locally available feed ingredients instead of expensive commercial feed may be a means to reduce feed cost as well as production cost. In many times, all ingredients of balanced feed are not available at local level round the year. Easily available low-cost commercial feeds such as Quality feed, ACI feed, Maisa feed, Mega feed and Nourish feed may be used instead of locally made low quality feed for increasing shrimp production as well as for higher net return. Considering the growth, production potential, feeding behavior and economic benefit, shrimp (P. monodon) culture is practicing in many countries of the world. In maximum time, shrimp farmers of this country could not properly harvest shrimp due to viral diseases. Most of the shrimp farmers of Bangladesh do not use any type of feed for shrimp. Natural foodstuffs present in the shrimp pond are not sufficient to fulfill the demand of the growing biomass. Growth and production of farmed shrimp is largely dependent upon the supply and intake of dietary nutrient inputs and feed. So, economic loss due to low growth of shrimp might be partially minimized using commercial feed. Production and profitability of shrimp depend on several factors. Use of commercial feed is one of the most imperative factors among them. Some sporadic works on effects of commercial feed on growth and production of shrimp have been done in Bangladesh. Keeping the above facts in mind, the present study was undertaken to assess the effects of different commercial feeds on survival, production and economic return of shrimp culture at brackish water earthen ponds in Bagerhat region. ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology 21 METERIALS AND METHODS Experimental area and design The experiment was conducted in twelve brackish water earthen ponds situated at Bagerhat sadar upazila of Bagerhat district (Fig. 1). Average area of the pond was 400 m 2 and average depth of water was 0.8-1.6 m each. The experiment was performed for a period of 120 days from March to June 2019. The experiment was designated as four treatments having three replications each. The treatments were T1, T2, T3 and T4. Selected ponds were randomly allocated under each treatment. Stocking density of shrimp was same each of the treatment. Fig. 1. Map of Bagerhat sadar upazila showing the experimental area. Pond preparation and management All selected ponds were drained out and were fully exposed to sunlight. Ponds were prepared by repairing the embankments and by removing all types of weeds. Before the trial, ponds were treated with agricultural lime (CaCO3) at a rate of 250 kg/ha based on soil pH. Ponds were then filled with tidal water gradually up to a depth of 0.9 m from the nearby tidal canal through screen net. All unwanted organisms were eliminated using rotenone at a rate of 3 ppm and then lime (CaCO3) was applied at a rate of 125 kg/ha for neutralizing its action. After 5 days of cleaning, ponds were fertilized with urea and TSP at a rate of 50 and 100 kg/ha, respectively. After 4-5 days of fertilization, the color of water turned into green. Fine meshed nylon net was used as fence on the dikes around ponds to prohibit the potential disease carrier’s fauna such as snail, snake and others from outside. Collection, stocking and feeding of shrimp After collection of shrimp PL from local market of Rampal in Bagerhat, the polythene bags were kept in the experimental ponds for about 40 minutes and water was exchanged between bags and ponds to acclimatize with pond water temperature. After conditions, PL were released in all ponds. Commercial shrimp feed as Quality feed (29.0% protein, 11.0% moisture, 6.0% crude lipid and 5.0% crude fiber), ACI feed (33% protein, 10.0% moisture, 6.0% crude lipid and 7.0% crude fiber) and Mega feed (35.0% protein, 11.0% moisture, 6.0% crude lipid and 5.0% crude fiber) procured from local market was applied 6 days in a week to ponds at a rate of 10% of total shrimp biomass for first month, 6% for 2nd month and gradually decreased up to 3% until the end of the study. ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology 22 Water quality determination Water quality parameters of ponds like temperature, salinity, transparency, dissolved oxygen (DO) concentration, pH, total alkalinity and ammonia were measured between 9.00-10.00 am after 10-day intervals. Salinity of water was measured using a portable refractometer (ATAGO, Hand Refractometer). Surface water temperature was determined in situ using a standard centigrade thermometer. Transparency was recorded using Secchi disc. Dissolved oxygen was determined using a portable DO meter (YSI 58 digital DO meter, HANNA, Yellow Springs, Ohio 45387 USA). pH of water was recorded using pH meter (HANNA, USA). Total alkalinity was measured by titrimetric method (APHA, 2000). Ammonia nitrogen was measured using ammonia test kit (Biosol, A.A. Biotech PVT Ltd., Fishtech BD Ltd). Sampling of shrimp Fortnightly sampling of 15-20% stocked shrimp to estimate the biomass and to adjust the feeding rations and also to observe the physical conditions of stocked shrimp. Shrimp were sampled using cast net. Weight and length of 40 individuals of shrimp were recorded for growth assessment. Weight (g) was measured using a portable balance and length (cm) by measuring scale. Sampling was continued until harvest. Estimation of growth, survival and production of shrimp After 120 days of culture, bamboo poles and leaves were removed, water was drained out of ponds and all shrimp were harvested by repeated netting (cast net and surrounding net). All shrimp harvested from each pond were counted, measured and weighted individually to determine survival rate, growth and production. Specific growth rate (SGR), feed conversion ratio (FCR) and survival rate (%) were calculated following the equation as cited by Pechsiri and Yakupitiyage (2005). The equations are as follows: Weight gain (g) = Mean final weight (g) - mean initial weight (g). Specific growth rate (SGR) (%/day) = {Ln (final body weight) - Ln (initial body weight) × 100}/cultured period (days). Feed conversion ratio (FCR) = Feed consumed (g dry weight)/live weight gain (g wet weight) of shrimp. Survival rate (%) = (Number of shrimps harvested ÷ total number of shrimps stocked) × 100. Production of shrimp= No. of shrimp caught × average final weight of shrimp. Yield and economic analysis The following equations were used to calculate production and profitability (Chowdhury et al., 2020; Dillon and Hardaker, 1993). The currency was converted from BDT to US$ (BDT 84 = US$ 1). Gross return (GRi) =Σi PiQi Net return (π) =Σi (PiQi) - TFC - TVC Benefit cost ratio (BCR) = GRi/TC Here, Pi = market value of harvested shrimp in US$, Qi = production (kg/ha), i = treatments (T1, T2, T3 and T4), TFC = total fixed cost, TVC = total variable cost, TC = total cost (TFC + TVC). ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology 23 Statistical analysis The data were expressed as mean with their standard error mean (SE). All data were analyzed using IBM SPSS Statistics version 23. Data were initially tested for normality (Shapiro-Wilk test) and homogeneity of variance (Levene’s test for equality of variance) before conducting one-way analysis of variance (ANOVA). All data were normally distributed and variances were approximately equal. As both conditions were fulfilled, growth and economic data were tested through ANOVA. Significant difference among means was compared with Tukey’s HSD test at P<0.05. Linear regression was conducted to examine how well feed could predict growth parameters. RESULTS AND DISCUSSION Growth, production and profit of shrimp farming Growth, survival rate and production of shrimp (P. monodon) in four treatments are depicted in Table 1. Average body weight (ABW) of PL of P. monodon during stocking was same (0.006 g) in all shrimp ponds. Mean final weight of shrimp was the highest in T2 (30.36 g) followed by T1 (28.53 g), T3 (27.43 g) and T4 (22.85 g), respectively (Fig. 2). Khanam et al. (2018) reported the final weight of shrimp as 23.40-31.76 g at different stocking densities (3- 5 pcs/m2) for 120 days at farmer’s level, which supports the findings of the present study. Ghosh et al. (2013) recorded the final weight of shrimp as 40 g at a stocking density of 5 pcs/m2 for 150 days in Pranti Shrimp Farming (PSF), Koira, Khulna, which is higher than the findings of the present study. Masud et al. (1997) demonstrated that final weight of shrimp as 15.5 to 26 g at different stocking density for 120 days in Elite Aquaculture Farm Ltd. in Teknaf of Cox´s Bazar, which is lower than the findings of the present work. Hossain et al. (1992) reported that shrimp attained an average weight of 21.65 g after rearing of 120 days with a stocking density of 5 PL/m² in earthen ponds, which is also lower than the present findings. Table 1. Growth, survival rate and production (Mean±sd) of Penaeus monodon in different treatments. Mean values in the same row with same superscript letters are not significantly different (p>0.05) Parameters Treatments T1 (ACI feed) T2 (Quality feed) T3 (Mega feed) T4 (control) Stocking density (nos./m2) 4 4 4 4 Average initial weight (g) 0.006±0.002 0.006±0.001 0.006±0.002 0.006±0.001 Average final weight (g) 28.53 b ±1.05 30.36 a ±2.23 27.43 c ±1.53 22.85 d ±1.38 Daily weight gain (g) 0.24 b ±.09 0.25 a ±0.05 0.23 c ±0.04 0.19 d ±0.07 FCR 3.1 b ±0.10 2.5 c ±0.15 3.3 a ±0.19 3.5 a ±0.20 Specific growth rate (%/day) 7.06 b ±1.02 7.11 a ±1.01 7.02 c ±1.02 6.87 d ±0.22 Survival rate (%) 75.00 b ±6.06 80.00 a ±5.49 69.00 c ±7.91 62.00 d ±2.00 Production (kg/ha) 855.9 b ±15.33 971.52 a ±27.83 757.07 c ±32.96 566.68 d ±9.68 ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology 24 In present study, daily weight gain of shrimp was recorded as 0.24, 0.25, 0.23 and 0.19 g, respectively in T1, T2, T3 and T4 for 120 days. Khanam et al. (2018) reported the daily weight gain of shrimp as 0.19 to 0.26 g for 120 days at 3-5 pcs/m2, which is in agreement with the present findings. Ghosh et al. (2013) measured the daily weight of shrimp as 0.20 to 0.28.5 g of 150 days at 5 to 15 pcs/m² density at PSF, Koira, Khulna, which is coincided with the present finding. Masud et al. (1997) reported that the daily weight of shrimp was 0.128 to 0.216 g at different stocking density for 120 days in Cox´s Bazar, which is slightly lower than the findings of the present study. Fig. 2. Growth (g) of P. monodon in four treatments. Specific growth rate (SGR) of shrimp varied from 6.87 to 7.11%, which is consistent with the findings of Khanam et al. (2018), who recorded the SGR of shrimp as 6.89-7.14%. Islam et al. (2008) found the SGR of shrimp as 6.79-6.91% in farmers´ shrimp farms of Bagerhat, which is in agreement with the findings of the present experiment. Sharma and Reddy (1996) reported SGR of shrimp as 2.01% using commercially available feed, which is lower than the present findings. Feed conversion ratio (FCR) of P. monodon in the present study ranged between 2.5-3.5%, which is close to the findings of Khanam et al. (2018), who found the FCR of shrimp as 2.45 to 3.00. The findings of the present study are higher than the findings of Masud et al. (1997), who recorded FCR of shrimp as 1.78 to 2.02. Chekait et al. (1995) observed the FCR ranged from 1.5 to 1.55 using microencapsulated diets, which is lower than present findings of the study. Wyban and Sweeney (1989) found that shrimp as 2.0 to 2.5, which is slightly lower than the findings of the present study. Chanratchakool et al. (1995) stated that FCR varies with the stocking density, quality of feed, depth of water, quality of PL and the size at which shrimp were harvested. Survival rate of shrimp in this study was 62.00 to 80.00%. Higher survival rate of shrimp was found in T2 (80.00%) followed by T1 (75.00%), T3 (69.00%) and T4 (62.00%), respectively. Khanam et al. (2018) obtained survival rate of shrimp as 76.00-85.00%, which is slightly higher than the findings of this study. Ghosh et al. (2013) found survival rate of shrimp as 58- 76%, which is lower than the present findings. Islam and Mahmud (2010) and Islam et al. (2008) recorded survival rate of shrimp as 58-72.5 and 64.5-71.0%, respectively in shrimp farms of Bagerhat, which are lower than the present findings. Masud et al. (1997) obtained the survival rate of shrimp as 49 to 70%, which is also lower than the present study. 0 5 10 15 20 25 30 35 1 Mar 15 Mar 30 Mar 15 Apr 30 Apr 15 May 30 May 15 Jun 30 Jun G ro w th ( g) o f sh ri m p Date of sampling T1 T2 T3 T4 ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology 25 Production of shrimp in all treatments ranged from 566.68 to 971.52 kg/ha with the highest production (971.52 /ha) in T 2 and the lowest production (566.68 kg/ha) in T 4 for 120 days culture period. This finding is close to the findings of Khanam et al. (2018), who found production of shrimp as 809.88 to 990.00 kg/ha for 120 days in farmer’s pond. Ghosh et al. (2013) obtained production of shrimp as 1498 to 2058 kg/ha in the stocking densities of 5 to 15 pcs/m², which is higher than the production of the present study. The findings of present study are higher than the findings obtained by Islam and Mahmud (2010) and Islam et al. (2008), who recorded shrimp production as 416.9-641.7 and 404.0-509.0 kg/ha in shrimp ponds of Bagerhat stocked with 3 PL/m² for 120 days fed with different feeds. Chen et al. (1989) found that production of shrimp as 848-1550 kg/ ha, which is higher than the findings of present study. Profit of shrimp farming in present study obtained the highest (US$ 2570.1/ha) in T2 followed by T1 (US$ 2105.7/ha), T3 (US$ 1786.6/ha) and T4 (US$ 1298.1/ha). Benefit cost ratio (BCR) was also highest in T2 (1.56) than those of T1 (1.50), T3 (1.47) and T4 (1.45) (Fig. 3). The findings of this study are higher than the findings of Khanam et al. (2018), who obtained the profit from shrimp farming as US$ 1615.9 to 2336.2/ha for 120 days at a density of 3-5 pcs/m2. Observed profit was higher than the findings of Ghosh et al. (2013), who recorded the net profit as US$ 1892.9/ha at a stocking density of 10 pcs/m 2 . So, it is indicated that the highest net profit and BCR were obtained from the treatment of Quality feed (T 2 ) than others. Fig. 3. Cost and economic return of P. monodon farming during study period. Water quality parameters Values of water temperature varied from 28.23 °C to 33.20°C, which is in agreement with the findings of Khanam et al. (2018) and Ghosh et al. (2013), who found water temperature ranges from 26.17 to 32.93°C and 25 to 32°C, respectively in farmer’s shrimp pond of Bagerhat and Khulna (Fig. 4a). Dissolved oxygen (DO) concentration ranged from 4.10 to 5.33 mg/l, which supports the findings of Khanam et al. (2018) and Ghosh et al. (2013) who found the DO ranges from 4.02 to 5.01 mg/l and 4.0 to 6.0 mg/l, respectively (Fig. 4b). Salinity of water varied from 3.44 to 6.97 ppt. Ghosh et al. (2013) reported that the ranges of salinity for shrimp was 12 to 26 ppt, which is higher than the findings of present study (Fig. 6317.1 7171.2 5587.8 4182.6 4211.4 4601.1 3801.2 2884.5 2105.7 2570.1 1786.6 1298.1 0.0 1000.0 2000.0 3000.0 4000.0 5000.0 6000.0 7000.0 8000.0 9000.0 T1 T2 T3 T4 U S $/ ha Treatments Total gross return (US$/ha) Total cost (US$/ha) Net profit (US$/ha) ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology 26 4c). Islam and Mahmud (2010) reported the salinity ranged from 1.2-11.0 ppt in shrimp ponds, which are slightly higher than the present findings. Concentrations of ammonia nitrogen (NH3-N) varied from 0.004 to 0.089 mg/l, which is similar with the findings of Khanam et al. (2018), Islam and Mahmud (2012) and Islam et al. (2008) who recorded ammonia nitrogen ranged from 0.003-0.008mg/l and 0.028-0.029 mg/l, respectively (Fig. 4d). Fig. 4a. Variation of water temperature (°C) during study period. Fig. 4b. Variation of dissolved oxygen (mg/l) during study period. Fig. 4c. Variation of salinity (ppt) during study period. ISSN: 2158-8104 (Online), 2164-0920 (Print), 2021, Vol. 5, Issue.1 http://journals.e-palli.org American Journal of Agricultural Science, Engineering and Technology 27 Fig. 4d. Variation of ammonia nitrogen (mg/l) during study period. CONCLUSIONS Sustainable of shrimp culture is dependent on various factors. Effect of commercial feeds is one of the most important among these factors. Most of the shrimp farmers are not aware of application of commercial shrimp feeds. But it is utmost imperative to know the quality, application and management of feeds for more production and more income. Based on the findings of the present study, it can be concluded that treatment 2 (Quality feed) is the best among all treatments in respect of survival, growth, production and net profit. 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