Masters Thesis

PRESENT STATUS OF HATCHERIES AND BROODSTOCK FEEDS IN DINAJPUR DISTRICT

2022-08-31T11:02:46Z

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

PRESENT STATUS OF USING AQUA MEDICINES AND CHEMICALS ON FISH HEALTH MANAGEMENT IN BOGURA DISTRICT, BANGLADESH

2022-08-31T11:02:46Z

PRESENT STATUS OF USING AQUA MEDICINES AND CHEMICALS ON FISH HEALTH MANAGEMENT IN BOGURA DISTRICT, BANGLADESH SARKER, GOBINDO CHANDRA Current investigation was conducted to comprehend existing status of the practice of aqua-medicines and chemicals for fish health management in freshwater aquaculture in Bogura district. Data was collected via questionnaire survey, individual communication, focus group discussion with target group and representative of aqua-medicine enterprises. All fish farmers had fish farming experience and most of them were facing by various diseases and water quality problems in the study area. A variety of chemicals including disease treatment, pond preparation, disinfectants, growth promoter, probiotics, toxic gas reducer and oxygen producer were produced by the selected aqua medicine companies and being used in the selected aquaculture zone. Salt, potassium permanganate, lime, formalin, bleaching powder, sumithion, melathion, methylene blue and malachite green were frequently used as traditional chemicals in heath management. Among the new aqua-chemicals geotox, jv zeolite, mega plus, aquastar pond, acme's zeolite, zeo-fresh, aqua green, biomin pond life, aquakleen, megagio gold, and aqua boost were utmost extensively used. Probiotics like profs, aqua photo, aqua gold, super biotic and pond care were used. The selected farmers also used growth promoter such as saltose, panvit aqua, spa gelly, aqua boost used as growth promoter and bio-pond, biogrow, aqua pure, gasstrap, metrix, geo-rich bio-aqua 50 and aqua magic as toxic gas reducer. Approximately 11 trade names of antibiotics were marketed in the selected area among them some were used by the fish farmers. Their main active ingredients were chlortetracycline, oxytetracycline, amoxicillin, co-trimoxazole, azithromycin and sulphadiazine. The survey identified some problems connected with the practice of such chemicals such as shortage of fish farmer’s knowledge about the usage of chemicals, proper dosage and their maintenance A THESIS BY GOBINDO CHANDRA SARKER Examination Roll No. 1605547 Session: 2016-2017 Semester: July-December, 2017 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

EFFECT OF STOCKING DENSITY OF VIETNAMESE KOI (Anabas testudineus) IN SEASONAL MINIPONDS

2022-08-31T11:02:46Z

EFFECT OF STOCKING DENSITY OF VIETNAMESE KOI (Anabas testudineus) IN SEASONAL MINIPONDS MURSALIN, MD. IMAMUL The current study was conducted to evaluate the effect of stocking density of Vietnamese koi (Anabas testudineus) in farmer’s seasonal mini ponds of Nilphamari and Rangpur district for a period of 120 days. There were three treatments each having three replications. Around 1.3 g weight of Vietnamese koi was stocked at the rate of 300, 400 and 500 individuals per decimal in T1, T2 and T3 respectively. All the experimental fish were fed with a commercial fish feed containing 30% crude protein two times daily at a rate of 5-15% body weight. During the experimental period the water quality parameters were suitable for fish culture. The water temperatures were ranged from 29.33 to 31.81°C; transparency 24.37 to 28.70 cm, pH 7.40 to 7.96, dissolved oxygen 5.17 to 6.28 mg l -1 and total ammonia 0.13 to 0.28 mg l -1 . Higher temperature and NH3 content were detected in the higher stocking density compared to those treatments where the stocking densities were lower. The weight gain (197.36±3.28 g) and specific growth rate (SGR 2.28±0.01% per day) were significantly increased (P<0.05) after 120 days feeding trial in the treatment T1 compared with the other treatment groups. While, a significantly lowest (P<0.05) feed conversion ratio (FCR) was observed in the treatment T1 followed by T2 and T3. Significantly highest (P<0.05) survival was observed in the treatment T1 compared with the remaining two treatments. At the end of the experiment the benefit-cost ratio (BCR) result revealed that best BCR was 1.64±0.03 in T1 which did not differed significantly (P>0.05) when compared with T2. Consequently, the results of this study designated that the lowest stocking density (300 individuals dec-1 ) seems to have a more progressive influence on the development of the growth performance and feed utilization of Vietnamese koi (A. testudineus) in the seasonal mini ponds. A Thesis By MD. IMAMUL MURSALIN Examination Roll No. 1605549 Session: 2016-2017 Semester: July- December, 2017 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

EFFECT OF STOCKING DENSITY ON THE GROWTH PERFORMANCES OF SHING (Heteropneustes fossilis) UNDER POLYCULTURE SYSTEM IN SEASONAL MINI PONDS OF NORTHERN REGION OF BANGLADESH

2022-08-31T11:02:46Z

EFFECT OF STOCKING DENSITY ON THE GROWTH PERFORMANCES OF SHING (Heteropneustes fossilis) UNDER POLYCULTURE SYSTEM IN SEASONAL MINI PONDS OF NORTHERN REGION OF BANGLADESH RANA, MD. SOHEL The present study was carried out to evaluate the effect of stocking density on the growth performance and water quality parameters of shing (Heteropneustes fossilis) polyculture system at Saidpur and Dimla Upazila of Nilphamari district and Taragonj Upazila of Rangpur district, for a period of 150 days from 30 March 2016 to 30 August 2016. H. fossilis with an average weight of around 3 g were stocked in nine uniform earthen ponds (around 10 decimal) at three different stocking densities of 500 (T1), 600 (T2) and 700 dec-1 (T3) together with Clarias batratus, Oreochromis niloticus and Barbodes gonionotus at a ratio of 5:2:1. All the experimental fish were fed with a commercial feed (Lily fish feed) containing 35.53% protein twice daily at 5-10% body weight of H. fossilis. During the study period, the water quality parameters were evaluated and the results revealed that significantly lowest (P<0.05) total alkalinity, hardness and ammonia content were noted in the lowest stocking density (T1) compared to those that were stocked at highest stocking density (T3). At the end of the feeding trial, weight gain (62.15±0.64g), percent weight gain (2135.46±5.05 %), average daily gain (0.41±0.01 % day-1 ) and SGR (2.04±0.01 % day-1 ) were significantly improved (P<0.05) in the treatment of T1 compared with the other treatment groups. Significantly highest (P<0.05) survival (%) of shing was also found in the treatment of T1 (77.93±0.94%) compared to the remaining treatments. Considering the survival highest gross production (kg dec-1 ) was observed in T2 (26.50±0.65) followed by T1 (25.38±0.55) and T3 (24.43±0.26). The benefit-cost ratio (BCR) result revealed that the best BCR was obtained in the treatment of T1. Therefore, the results of this study indicated that the lowest stocking density (500 fingerlings dec-1 ) seems to have more positive effect on the growth performances of shing (H. fossilis) polyculture in the seasonal farmer’s mini ponds. A Thesis By MD. SOHEL RANA Examination Roll No. 1605208 Session: 2016-2017 Semester: January-June, 2017 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