scholarly journals SURVEYING THE CURRENT SITUATION OF USING PROBIOTICS, CONTROLLING DISEASES AT SHRIMP FARMINGS IN THE CA MAU PENINSULA OF VIET NAM

2020 ◽  
Vol 1 (40) ◽  
pp. 180-188
Author(s):  
Thanh Huu Nguyen ◽  
Tho Phu Nguyen ◽  
Hang Thi Thuy Nguyen

In order to provide the basis for the application of scientific and technological advances, reorganizing shrimpfarming in sustainable and bringing high economic value to the Mekong Delta. The study surveyed the current situation of breeds, farming methods, environmental monitoring control, Vibrio sp. and the use  of probiotics of shrimp farmers in the Ca Mau peninsula by interviewing 200 shrimp farmers and 20 specialized fisheries officers in Ca Mau, Soc Trang, Bac Lieu and Kien Giang provinces. The results showed that the shrimp breeds selected for farming originated from the Central and Southwest provinces. There are four popular farming methods: intensive, semi-intensive, improved extensive, and rice-shrimp. The intensive farming had the highest rates of the initial quarantine of shrimp postlarvae (74%) and Vibrio test (57%). All shrimp farmers workingon the intensive and semi-intensive farmings used probiotics. The rates of probiotic use in the improved extensive and riceshrimp farmings were lower, only 60% and 40% respectively. The results suggested that shrimp farmers working on the semi-intensive and intensive farmings paid more attention to the use of probiotics as well as the test to prevent the disease in shrimp.

2021 ◽  
Vol 1 (42) ◽  
pp. 109-115
Author(s):  
Binh Phan Khanh Huynh ◽  
Tho Van Nguyen ◽  
Vien My Tran

This study aimed to use charcoal derived from the bamboo and melaleuca produced by traditional kiln applied to sandy soil growing mustard green (Brassica juncea L.). The charcoals were applied at three ratio (1%,2%, and 3%, which correspond to 10, 20, and 30 g charcoal/kg soil in pots) and the control treatment without charcoal. Soil properties were investigated including bulk density, pH, electrical conductivity (EC), cation exchange capacity (CEC), organic matter content, total nitrogen, and total phosphorous. The results showed that bulk density decreased in charcoal-treated soils. pH and EC were in the suitable range for plants.Nutrients and CEC of the soil in the charcoal treatment were significantly higher compared with the control (CEC increase 6.8% to 16%; TC increase 80% to 115%; TN increase 37.5 to 75%). Green mustard growing on charcoalamended soil had greater height (higher 3% to 21%), bigger leaves, and higher yield (increase18% to 81%) than those of plants groomed in the control treatment. This study showed the potential of using charcoal as supplying nutrient to the poor soil. Moreover, the abundant of raw material and easy to produce, it is suitable for applying in the Mekong Delta, Viet Nam, and other countries with similar conditions and infrastructure. 


Author(s):  
Dinh Binh Tran

Protecting healthcare workers (HCWs) is a top priority in COVID-19 pandemic at this time. HCWs who carry the pathogens will increase the risk of infecting their patients, their colleagues as well as the community. Therefore, HCWs must follow the guidance of preventive measures issued by the Ministry of Health to ensure safety, although that means they have to work under uncomfortable condition. That is the reason why the role of surveillance and assessment the risk of infection is extremely critical. Only with regular and continuous supervision, with instructions and reminders, can HCWs effectively prevent the COVID-19 infection, especially while being under intensity - work pressure of the current situation.


Author(s):  
Cao T.B. Van ◽  
Nguyen T.T. Thuy ◽  
Ngo H. San ◽  
Tran T. Hien ◽  
G. Baranton ◽  
...  

2019 ◽  
Vol 19 (1) ◽  
pp. 127-135
Author(s):  
Phan Duc Ngai ◽  
Vo Si Tuan

Relations between economic zoobenthos species and ecological characteristics of Thi Nai lagoon were reported as results of three surveys carried out during 2014–2015. The results have pointed out 11 zoobenthos species that have primarily economic value at the Thi Nai lagoon (5 bivalve species, 5 crustacea species and 1 gastropoda species). Bivalve group possesses 91% of the entire commercial yield of benthic animal (7,456.9 tons/year), in which Glauconome chinensis and Gari elongata possess dominatingly (possess 90% of the entire commercial yield of bivalves: 6,817 tons/year). Bivalve and gastropoda groups were found in correlation with sandy sediment and mangroves but crustacea group was found in correlation with muddy sand sediments and seagrass. The results of this study will conntribute the scientific basis for further studies on the trophic relationship, food web and data for planning, zoning and appropriate exploitation of fisheries resources.


Viet Nam now is one of the most dynamic emerging countries in East Asia region. Viet Nam is considered as one of the largest aquatic exporting countries in the world. Most of aquatic exporters are in Mekong Delta. An Giang Province is located in this region. This study aims to verify the 10 components which constitute the competitiveness of aquatic exporters in An Giang Province by SPSS 22.0. Through Cronbach's Alpha accreditation, exploratory factor EFA, confirmatory factor CFA, structural equation model SEM were analyzed to offer proposals and recommendations in order to help the aquatic exporters improve their competitiveness in the international market.


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