scholarly journals Agrochemicals used in freshwater aquaculture in Jhenaidah district, Bangladesh

2019 ◽  
Vol 3 (2) ◽  
pp. 63-76
Author(s):  
Md Shahinur Rahman ◽  
Subrata Mondal ◽  
Amir Hossain
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Skin Diseases ◽  
Health Management ◽  
Animal Health ◽  
Water Quality Management ◽  
Stocking Density ◽  
Black Spot ◽  
Catla Catla ◽  
Freshwater Aquaculture

The present experiment was conducted in order to investigate the use of agrochemicals in freshwater aquaculture with emphasis on fish health management. The selected area was Mahespur upazila under Jhenaidah district and the study duration was six months. The main group was fifty fish farmers and the data were collected through interview with fish farmers and key informants (chemical seller). Ten categories of chemicals were identified that are used by fish farmers for various purposes such as pond preparation, water quality management, controlling diseases, supplying oxygen, killing fish predators, Ten pharmaceutical companies were found to provide the agrochemicals to fulfill the farmers need. These companies are Novartis Anmal Health Ltd, Fishtech (BD) Ltd, SK+F BD Ltd, Renata Ltd, ACI Animal Health, Opsonin Pharma Ltd, Eon Animal Health Products Ltd, Square Pharmaceuticals Ltd, Sciencetech Agro Industries Ltd, Rals. In the study area some kinds of diseases were founded such as Epizotic Ulcerative Syndrome (EUS) in Rohu (Labeo rohita), Catla (Catla catla), Mozambique tilapia (Oreochromis niloticus), Black spot in Stinging cat fish, skin diseases, gill damage, tail and fin rot in Yellow tail catfish (Pangasius pangasius). For highest stocking density tilapia and pangus were mostly affected by diseases in winter. Farmers use various chemicals such as for water quality management agriculture lime, Geotox, JV Zeolite, Mega Zeo Bio, Aquakleen and Biomin, as antibiotic they use Novamix 101, Erocot, Captor, Oxysentin 20%, Renamycin, Aquamycin and Oxysentin 20% are antibiotics with different trade names were seen in the market as well as used by the fish farmers in the study area. The fish farmers use a wide variety of disinfectants in freshwater aquaculture. Timsen, Polgard plus, Formalin, Bleaching powder, EDTA are found available in all the shops of Mahespur. Formalin is used to control protozoan diseases. Virex is used to destroy virus and bacteria. Fish farmers use oxygen suppliers to increase the oxygen level in the water body. Oxidizing agent, hydrogen peroxide are major active ingredients of such chemical. The recovery of fish diseases was found 80-90% in the study area. During field observation many problems were identified in case of using agrochemicals which included lack of skill and knowledge of farmers about the application, withdrawal period of agrochemicals and drugs and some adverse effects on fish and human health. Asian Australas. J. Food Saf. Secur. 2019, 3(2), 63-76

scholarly journals Broodstock Health Management for Cantang Grouper (Epinephelus sp.) in BBRBLPP Gondol Bali

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Muh Sulaiman Dadiono ◽  
Maheno Sri Widodo ◽  
Rudy Wijaya
Keyword(s):  
Water Quality ◽  
Vitamin E ◽  
Quality Management ◽  
Vitamin C ◽  
Health Management ◽  
Water Quality Management ◽  
Quality Parameters ◽  
Fish Health ◽  
Collection Method ◽  
Trash Fish

Fish health is an important problem faced by Cantang grouper (Ephinephelus sp.) Hatcheries. Broodstock health management needs to be managed properly so as not to decrease the quality and production of Cantang grouper seeds. Cantang grouper broodstock health management includes the process of maintaining grouper broodstock, feeding, disease control and water quality management. The data collection method is done by recording the results of active participation, interviews and observations. Broodstock grouper cantang are maintained in ponds made of concrete with sizes ranging from 150 meter kibik and a depth of 3 meter. Pond cleaning is carried out once or twice a month with the addition of 2 kg of chlorine / 150 tons of water. Grouper broodstock is fed 10 kg for 24 broodstock. feed in the form of trash fish, squid, mackarel, vitamin C and vitamin E. The types of diseases that often attack grouper broodstock are Criptocaryon irritans, Benedia sp and Vibrio alginolyticus. Water quality parameters measured in grouper broodstock ponds are salinity and temperature. The water salinity in broodstock ponds ranges from 34 - 35 ppt and temperatures range from 27-31 derajat celcius.

Intensive pond culture of Pangasius hypophthalmus in the Mekong Delta, Vietnam.

2020 ◽  
Author(s):  
Nhat Lung Dung
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Water Quality Management ◽  
Stocking Density ◽  
Mekong Delta ◽  
High Potential ◽  
Pond Culture ◽  
Striped Catfish ◽  
Fish Yields ◽  
Experimental Ponds

Abstract Silver striped catfish (Pangasius hypophthalmus), 'ca tra' in Vietnamese, has been cultured intensively in cages in the Mekong Delta, Vietnam, for at least 30 years, but pond culture of this species is traditionally semi-intensive. Recently, intensive pond culture of the species has been developed. A study of P. hypophthalmus intensive pond culture was conducted in Thotnot and Omon Districts, Cantho City. The stocking density is 10-20 fingerlings m-2. Fish are fed with both artificial and farm-made feed. After 6 months of culture, fish yields ranged from 189 to 212 t ha-1 in experimental ponds. With good water quality management, meat is white and suitable for export. Intensive pond culture of this catfish has high potential to increase aquacultural production and improve farmers' income in the Mekong Delta of Vietnam. Production from farmers' ponds range from 50 to 300 t ha-1 at stocking densities of 8-40 fingerlings m-2.

scholarly journals Aqua drugs and chemicals used in aquaculture of Zakigonj upazilla, Sylhet

2015 ◽  
Vol 1 (2) ◽  
pp. 336-349
Author(s):  
Afnan Alam Chowdhury ◽  
Md Shahab Uddin ◽  
Suvashis Vaumik ◽  
Abdulla Al Asif
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Health Management ◽  
Water Quality Management ◽  
Culture Period ◽  
Pharmaceutical Companies ◽  
Growth Promoter ◽  
Disease Treatment ◽  
Dissolve Oxygen Level ◽  
Trade Names

In order to investigate present status of aqua chemicals and drugs used in various aquaculture activities in Zakigonj upazilla, Sylhet. A survey was conducted, with carp polyculture, tilapia and catfish farmers, aqua-medicine sellers, representatives of pharmaceuticals companies, from July 2014 to November 2014. Each group consisted of 25 respondents. According to the survey the most common dose of lime used by the farmers during pond preparation (62.67%) and culture period (53%) is 0.5-1 kg/40m2. Urea and TSP used by the farmers mostly during culture period with most common dose of 100-150g/40m2(37.3%) and 50-100 g/40m2 (68%) respectively. Various categories of aqua drugs and chemicals were identified that were used by fish farmers for different purposes such as water quality management, disinfectants, improve dissolve oxygen level, disease treatment, antibiotics and growth promoter. Many pharmaceutical companies were found to provide these aqua drugs and chemicals with different trade names to fulfill the farmers demand. For pond and water quality management lime, urea and TSP are mostly used. Bleaching powder, Timsen, EDTA, Polgard, Virex, Aquakleen, Germnill, Pond safe were widely used as disinfectant. Health management and disease treatment were the major activities where farmers were seen to use a lot of chemicals. A range of chemicals including antibiotics were found available in market and being used in the aquaculture sector. Commonly found traditional chemicals in heath management included Potassium permanganate, Lime, Salt, Virex, Timsen, Aquakleen, Germnil, Pond Safe, Deletrix, Spa, Albez, Ablez were used regularly for disease treatment. Mostly used antibiotics are Renamycin, Oxysentin 20% Chlorsteclin Oxy-D Vet, Aquamycin, Orgamycin 15 %, Orgacycline-15% etc. Major active ingredients of these antibiotics were oxytetracycline, chlorotetracycline, amoxicillin, doxycycline etc. There are approximately fifty two pharmaceutical companies have been recorded to market around 300 products. Most of the products have been marketed from different countries like USA, Thailand, Malaysia, Belgium and China etc. The study also indicated some problems associated with the use of such chemicals due to lack of knowledge of farmers about the use of chemicals, appropriate dose, method of application and their indiscriminate use of chemicals. The study also highlighted the names and approximate price of aquaculture chemicals available with the chemicals sellers in Zakigonj, Sylhet.Asian J. Med. Biol. Res. June 2015, 1(2): 336-349

Water Quality Management – A Total Catchment Management Approach

1989 ◽  
Vol 21 (2) ◽  
pp. 281-288 ◽  
Author(s):  
W. J. Hawkins ◽  
D. A. Geering
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Water Quality Management ◽  
Management Approach ◽  
Catchment Management ◽  
Know How ◽  
Wild And Scenic Rivers ◽  
Resource Managers ◽  
Resource Protection ◽  
Development Resource

Water quality standards set in the past have not helped resource managers in the decisions that they face in seeking sustainable development. Resource managers are looking for meaningful information on water quality so as to evaluate the resource, set priorities for action, and to monitor progress. Resource managers need to know how water quality affects, and is affected by, catchment uses and activities. Examples of three wild and scenic rivers, the Nymboida, Murrumbidgee, and Hawkesbury/Nepean River systems, demonstrate how a ‘Total Catchment Management' approach to resource use and resource protection has advantages for water quality management.

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