http://103.7.193.12:8080/xmlui/handle/123456789/1555 Tue, 09 Jun 2026 23:49:22 GMT 2026-06-09T23:49:22Z http://103.7.193.12:8080/xmlui/handle/123456789/2110 AN INVESTIGATION ON CARP FATTENING IN NATORE DISTRICT HOSSAIN, MD. SAKOAT A survey was conducted to assess the current status of carp fattening and the socio economic situation of fish farmers in three upazilas of Natore district: Natore Sadar, Singra, and Gurudaspur. The study took place from July 2022 to June 2023 and involved gathering information from 80 fish farmers through interview with structured questionnaires. Results showed that 40% farmers were within the 41–50 age groups, with 65% belonging to nuclear families and 35% to joint families. In terms of education, most farmers (30%) had secondary-level education, while only 14.5% were illiterate. The annual income of a significant portion of respondents ranged from BDT 1,00,000 to 2,00,000, making up 33.34% of the sample. All farmers had access to electricity, and 41.67% were members of organizations like ASA and BRAC. The study found that the majority of ponds (58.5%) in the study area were between 0.5-1.0 acres in size, with an average depth of 1.5 meter. Additionally, 70% of the ponds used for fish culture were owned by the farmers themselves, while the remaining 30% were leased. Groundwater was the primary water source for 78% of farmers, with 42% exchanging water as needed. Most farmers (57.63%) prepared their ponds and applied specific amounts of salt, TSP, and urea per hectare. Growth promoters were used by 88% of farmers to enhance carp growth, with various probiotics such as Safe gut, Navio plus, Protox aqua, Aquaphoto, and Dellomax being employed. Indian major carp and exotic carp were the preferred species for cultivation, experiencing only fish lice as a constraint during the nine to ten months of cultivation. 63.33% farmers used commercial feeds. The main obstacles identified were a lack of scientific knowledge, insufficient high-quality seeds and feeds, funding shortage and inadequate marketing facilities. AN INVESTIGATION ON CARP FATTENING IN NATORE DISTRICT; A Thesis By MD. SAKOAT HOSSAIN, Examination Roll No. 1606045, Session: 2022, Semester: July-December 2024; MASTER OF SCIENCE (MS) IN AQUACULTURE, DEPARTMENT OF AQUACULTURE, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR-5200; DECEMBER 2024. Sun, 01 Dec 2024 00:00:00 GMT http://103.7.193.12:8080/xmlui/handle/123456789/2110 2024-12-01T00:00:00Z http://103.7.193.12:8080/xmlui/handle/123456789/2109 DETECTION OF MICROPLASTIC FROM THREE IMPORTANT CRAB SPECIES FROM THE COAST OF BANGLADESH HASAN, MD. MEHEDI In this study, the abundances and characteristics of microplastics in different tissues of three species of wild crabs (Scylla olivacea, Portunus pelagicus, and Portonus sanguinolentus) were investigated across three important fishing grounds (Chattagram, Cox’s Bazar and Saint Martin Island region) of Bangladesh. Each region consists of three distinct fishing grounds. The result of the study showed that the highest detection of microplastics was recorded in Cox’s Bazar followed by Saint Martin and Chattagram. The crab species Scylla olivacea and Portunus pelagicus were most abundant in Cox’s Bazar and Chattagram while Portonus sanguinolentus in Cox’s Bazar and Saint Martin Island. The microplastics size was also varied among the crab samples. Comparatively larger microplastics were recorded in the crab samples in Chattagram region. Black coloured microplastics were the most prominent in gill and guts of the samples (45.45% and 42.37%, respectively). Among various types of shapes about (56.92%) of thread was most abundance in gill where thread was (53.33%) in gut. The 50% gill tissue showed fragment microplastics followed by microbead (6.25%). The 49.18% gut tissue showed microbead microplastics followed by fibre (8.20%). Overall, the study reported that the distribution pattern, abundance, size, color and shape of microplastics in the studied crab samples which will ultimately help the biologist to get insight into the plastic pollution in marine ecosystems by taking crabs as model species. DETECTION OF MICROPLASTIC FROM THREE IMPORTANT CRAB SPECIES FROM THE COAST OF BANGLADESH; A THESIS BY MD. MEHEDI HASAN, Registration No. 1706101, MS Session: 2022, Thesis Semester: January - June 2024; MASTER OF SCIENCE (M.S.) IN AQUACULTURE, DEPARTMENT OF AQUACULTURE, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR; JUNE 2024. Sat, 01 Jun 2024 00:00:00 GMT http://103.7.193.12:8080/xmlui/handle/123456789/2109 2024-06-01T00:00:00Z http://103.7.193.12:8080/xmlui/handle/123456789/2108 AN ASSESSMENT OF CURRENT STATE AND FUTURE POTENTIAL OF BIOFLOC TECHNOLOGY IN PANCHAGARH DISTRICT RAHMAN, MD. HABIBUR The present study was conducted to know the current state and future potential of biofloc technology in the Panchagarh district that cover five upazilas such as Panchagarh sadar, Tentulia, Debiganj, Boda and Atwari starting from July to December 2022. The study was done by analyzing socio-demographic characteristics, farming practices, and challenges faced by local farmers. Data were collected from 55 biofloc farmers through surveys and interviews. The findings revealed that 62.5% of respondents were young farmers aged between 21-30 years, with 40.5% having graduated from formal education systems. The majority (80.58%) hailed from nuclear families, while 74.54% did not hold any organizational membership. Fish culture (30.58%) and biofloc farming (20.32%) were identified as major occupations. Biofloc culture was predominantly practiced by farmers with 7 to 12 months of experience (51.58%), although 70.35% lacked formal training before initiating farming. Most farms (56.36%) operated on areas less than one decimal, with 55.58% having one or two tanks constructed primarily from cement (83.63%). Groundwater was the main water source (92.48%), and partial water exchange practices were widely adopted. Farmers used synthetic probiotics such as Pond Care (40.8%), Protox Aqua (22.81%), Aqua photo (17.32%), Dellomax (10.94%) and Ecopond (6.13%). The preferred tank shapes were rectangular (50.85%) and circular (35.6%), with a depth ranging between 4 to 6 feet. Despite challenges such as technical (50%) and financial (22.75%) difficulties, biofloc farmers reported fish production rates of 301-400 kg per cycle in 38.12% of cases. Diseases, particularly fungal (45.9%) and bacterial (34.5%), posed significant threats. Total harvesting was preferred by 61.82% of farmers, and most sales (52.72%) were made to wholesalers. The findings highlight the promising but challenging adoption of biofloc technology in the district. Investments in farmer training, disease management, and financial support can foster sustainable aquaculture practices and enhance productivity in Panchagarh. AN ASSESSMENT OF CURRENT STATE AND FUTURE POTENTIAL OF BIOFLOC TECHNOLOGY IN PANCHAGARH DISTRICT; A Thesis By MD. HABIBUR RAHMAN, Examination Roll No. 1506109, Session: 2022, Semester: July-December 2024; MASTER OF SCIENCE (MS) IN AQUACULTURE, DEPARTMENT OF AQUACULTURE, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR-5200; DECEMBER 2024. Sun, 01 Dec 2024 00:00:00 GMT http://103.7.193.12:8080/xmlui/handle/123456789/2108 2024-12-01T00:00:00Z http://103.7.193.12:8080/xmlui/handle/123456789/1662 PRESENT STATUS OF HATCHERIES AND BROODSTOCK FEEDS IN DINAJPUR DISTRICT BARMAN, SHAYAN KUMAR A yearlong study was conducted to investigate the present status of fish hatcheries and broodstock feeds used in the hatcheries in Dinajpur district. Twelve hatcheries were found in the study areas. Data were collected by using a well structured questionnaire. The study revealed that age of the most respondents (44.44%) was in the age group of 41-55 years, all of them were male and Muslim and used underground water in the hatchery activities. Educational qualification of most of the hatchery owners was higher secondary level (34%) and 56% of the respondents were trained by different organizations. It was found that 75% hatcheries were operated privately, 50% were large (area above 6 acres), and annual productivity of fish seed of 66.66% of hatcheries was low (less than 1000 kg). Most of the respondents (66.67%) used both commercial and on-farm feeds and commercial feed was collected from various reputed feed companies e.g. Mega Feed, Provita Feeds Limited, Quality Feeds Limited, Aftab Feed Production Limited, AG Agro Feeds Limited, Lili Feeds Limited etc. and 41.67% of the respondents applied feeds at 1-2% of body weight, 66.67% of the respondents fed twice daily in morning and evening, all of them fed the brood fish manually A Thesis By SHAYAN KUMAR BARMAN Examination Roll No. 1705515 Session: 2017 Semester: July-December 2018 Submitted to the Department of Aquaculture Hajee Mohammad Danesh Science and Technology University, Dinajpur In partial Fulfillment of the Requirements For the degree of MASTER OF SCIENCE (MS) IN AQUACULTURE Sat, 01 Jun 2019 00:00:00 GMT http://103.7.193.12:8080/xmlui/handle/123456789/1662 2019-06-01T00:00:00Z