Ministry of Science and Technology, Vietnam最新文献_第2页

Development of NBS-LRR gene-specific microsatellite markers for passion fruit Passiflora edulis Sims 为西番莲开发 NBS-LRR 基因特异性微卫星标记

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-25 DOI: 10.31276/vjst.66(3).31-37

Duc Trung Tran, Thi Thu Hang Nguyen, Thu Huong Dao, Hong Linh Ta, Thi Lan Hoa Nguyen, Thanh Huyen Pham, Thi Hue Huong Tran, Hoang Nguyen

{"title":"Development of NBS-LRR gene-specific microsatellite markers for passion fruit Passiflora edulis Sims","authors":"Duc Trung Tran, Thi Thu Hang Nguyen, Thu Huong Dao, Hong Linh Ta, Thi Lan Hoa Nguyen, Thanh Huyen Pham, Thi Hue Huong Tran, Hoang Nguyen","doi":"10.31276/vjst.66(3).31-37","DOIUrl":"https://doi.org/10.31276/vjst.66(3).31-37","url":null,"abstract":"The chromosome-level genome assembly of passion fruit (Passiflora edulis Sims) has facilitated computational analyses in developing novel informative SSR markers for genetics and breeding research. In this study, in-silico analysis was conducted to discover potential microsatellite loci and to design specific primers from the sequences of the characterised nucleotide-binding site - leucine-rich repeats (NBS-LRR) gene family of passion fruit, and a genotyping experiment was performed to validate the novel simple sequence repeat (SSR) markers.In total, 497 microsatellite loci were detected from 161 passion fruit NBS-LRR genes, of which 383 loci were qualified for primer generation. Forty-six SSR markers were selected for polymorphism verification, targeting 35 NBS-LRR genes that showed potential gene expression in response to biotic and abiotic stresses. From that, 25 SSR markers showed consistent polymorphic alleles among different passion fruit genotypes via PCR-PAGE analysis. These novel NBS-LRR-specific SSR markers might provide valuable tools for fortifying research on germplasm evaluation, genetic mapping, and molecular breeding for disease-resistant passion fruit varieties.","PeriodicalId":18650,"journal":{"name":"Ministry of Science and Technology, Vietnam","volume":" 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140384534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of nuclear shell structure in neutron-rich nuclei N=32 and N=34 富中子核 N=32 和 N=34 的核壳结构演变

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-25 DOI: 10.31276/vjst.66(3).01-05

Cong Cuong Do, D. L. Bui, Duc Ton Nguyen

引用次数: 0

Expression of several deubiquitinase and tyrosine phosphatase genes involved in inflammatory response in lymphoma 参与淋巴瘤炎症反应的几种去泛素酶和酪氨酸磷酸酶基因的表达

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-15 DOI: 10.31276/vjste.66(1).90-95

N. Giang, Nguyen Trong Ha, Nguyen Thi Xuan

{"title":"Expression of several deubiquitinase and tyrosine phosphatase genes involved in inflammatory response in lymphoma","authors":"N. Giang, Nguyen Trong Ha, Nguyen Thi Xuan","doi":"10.31276/vjste.66(1).90-95","DOIUrl":"https://doi.org/10.31276/vjste.66(1).90-95","url":null,"abstract":"Lymphoma represents a heterogeneous group of cancers affecting the lymphatic system, encompassing non-Hodgkin lymphoma (NHL) and Hodgkin lymphoma (HL). The majority of NHL cases originate from B cells. HL is characterized by the presence of rare Hodgkin and Reed-Sternberg cells. Within the context of the inflammatory response, two SH2 domain-containing protein tyrosine phosphatases (SHPs), namely SHP-1 and SHP-2, serve as negative regulators. Deubiquitinating enzymes (DUBs) play a crucial role in inhibiting NF-κB activation in response to various stimuli. This study focuses on the DUBs OTUB1, OTUB2, and Cezanne. Blood samples were collected from 50 NHL patients, 26 HL patients, and 50 healthy individuals. Quantitative RT-PCR was employed to assess the mRNA expression of OTUB1, OTUB2, Cezanne, SHP-1,and SHP-2, while ELISA was used to determine IL-6 and CA125 concentrations. The results revealed that the mRNA level of OTUB1 was significantly downregulated in NHL patients but not in HL patients. Notably, Cezanne expression was downregulated in lymphoma patients, with significantly lower levels observed in HL compared to NHL patients. Furthermore, SHP-1 mRNA expression was significantly lower in the NHL group compared to the HL group or healthy individuals. Conversely, SHP-2 gene expression was upregulated in NHL patients but remained unchanged in HL patients. In conclusion, these findings highlight significant differences in the expressions of DUB and SHP genes and the inflammatory response in lymphoma patients. This study provides a foundation for further investigation into the roles of DUBs and tyrosine phosphatases in regulating the functional activation of lymphoma cells.","PeriodicalId":18650,"journal":{"name":"Ministry of Science and Technology, Vietnam","volume":"75 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140239584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of direct C-3 difluoromethylation reaction for application in synthesis of quinoline-related drugs 开发直接 C-3 二氟甲基化反应，用于合成喹啉相关药物

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-15 DOI: 10.31276/vjste.66(1).53-58

Thanh Tung Truong, John Nielsen

{"title":"Development of direct C-3 difluoromethylation reaction for application in synthesis of quinoline-related drugs","authors":"Thanh Tung Truong, John Nielsen","doi":"10.31276/vjste.66(1).53-58","DOIUrl":"https://doi.org/10.31276/vjste.66(1).53-58","url":null,"abstract":"Fluorine holds a prominent position within the realm of drug discovery and development, substantiated by its presence in approximately 25% of drugs approved by the US Food and Drug Administration (FDA). Consequently, the advancement of new fluorination reactions stands as a pivotal area in medicinal chemistry. In particular, the monofluoro-, difluoromethyl-, and trifluoromethyl- are three groups that appear most frequently in drug structure. Quinoline, owing to its privileged structural status, plays a crucial role in drug design and synthesis. Various approaches have been documented for the direct difluoromethylation of the C-2 and C-4 positions of the quinoline ring. However, achieving direct C-3 difluoromethylation has remained an elusive objective. In this study, we introduce a novel method for effecting the direct difluoromethylation at the C-3 position of the quinoline ring.Comprehensive characterizations, including 1H-NMR, 13C-NMR, and 19F-NMR for all compounds are performed. We believe that this novel method will open a new way to access the hitherto untapped C-3-difluoromethylation active compounds.","PeriodicalId":18650,"journal":{"name":"Ministry of Science and Technology, Vietnam","volume":"85 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140239678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of pyridinium-based ionic liquid and application as a green catalyst for the synthetic route of 4H-1-benzopyran-5(6H)-ones 制备吡啶基离子液体并将其用作 4H-1-苯并吡喃-5(6H)-酮合成路线的绿色催化剂

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-15 DOI: 10.31276/vjste.66(1).34-45

Huong Ngoc Thi Dao, T. Nguyen, Tran Huyen Thi Nguyen, Thuy Hong Ngoc Phan, Phuong Hoang Tran

{"title":"Preparation of pyridinium-based ionic liquid and application as a green catalyst for the synthetic route of 4H-1-benzopyran-5(6H)-ones","authors":"Huong Ngoc Thi Dao, T. Nguyen, Tran Huyen Thi Nguyen, Thuy Hong Ngoc Phan, Phuong Hoang Tran","doi":"10.31276/vjste.66(1).34-45","DOIUrl":"https://doi.org/10.31276/vjste.66(1).34-45","url":null,"abstract":"1-(4-sulfobutyl)pyridinium chlorozincate ionic liquid was synthesised in high yield (89%) through a simple route and characterised using FT-IR, NMR, and HRMS spectroscopy. The one-pot reaction was employed for the condensation reaction of benzaldehydes, 5,5-dimethyl-1,3-cyclohexanedione, and dicyanomethane, utilising the prepared ionic liquid catalyst. The optimal conditions for the reaction were achieved with a catalyst loading of 10 mol%, a solvent mixture of water and ethanol (1:1, v/v), maintained at 100°C for 180 minutes. A broad spectrum of benzopyran-5(6H)-one derivatives was prepared, yielding moderate to good results. The notable features of this procedure include readily available substrates, short reaction times, the use of environmentally friendly solvents, and the elimination of the need for chromatography in the isolation of products. Anew acidic pyridinium-based ionic liquid was successfully synthesised and used as a catalyst in the synthetic process of 2-amino-3-cyano-4-phenyl-7,7-dimethyl-7,8-dihydro-4H-1-benzopyran-5(6H)-ones. These reactions involved a condensation reaction of aromatic benzaldehydes, 5,5-dimethyl-1,3-cyclohexanedione, and dicyanomethane in a solvent mixture of ethanol and water, resulting in the desired products in moderate to good yields. The procedure is efficient and eco-friendly, and the products can be easily obtained by recrystallisation. Thus, this protocol offers an alternative to existing methods.","PeriodicalId":18650,"journal":{"name":"Ministry of Science and Technology, Vietnam","volume":"23 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140240388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anti-inflammatory effect of gallic acid-conjugated chitooligosaccharides in lipopolysaccharide-stimulated RAW 264.7 macrophages 没食子酸结合壳寡糖在脂多糖刺激的 RAW 264.7 巨噬细胞中的抗炎作用

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-15 DOI: 10.31276/vjste.66(1).96-103

Van-Hoai Bui, Hong-Tham N Vo, Thanh-Tuan Duong, Se-Kwon Kim, Dai-Nghiep Ngo

{"title":"Anti-inflammatory effect of gallic acid-conjugated chitooligosaccharides in lipopolysaccharide-stimulated RAW 264.7 macrophages","authors":"Van-Hoai Bui, Hong-Tham N Vo, Thanh-Tuan Duong, Se-Kwon Kim, Dai-Nghiep Ngo","doi":"10.31276/vjste.66(1).96-103","DOIUrl":"https://doi.org/10.31276/vjste.66(1).96-103","url":null,"abstract":"The aim of the present study is to investigate the anti-inflammatory effect of gallic acid grafted onto COS chains (GA-COS), focusing on the reduction of nitric oxide production, downregulation of inflammatory signals such as inducible nitric oxide synthase (iNOS), gene expression of cytokines such as TNF-α, IL-1β, IL-6, and nuclear factor kappa B (NF-κB) signalling, including the p50 and p65 subunits. The anti-inflammatory effect is mediated through the reduction of nitric oxide production and downregulation of inflammatory proteins such as inducible nitric oxide synthase (iNOS), gene expression of cytokines like TNF-α, IL-1β, IL-6, and nuclear factor kappa B (NF-κB) signalling, including the p50 and p65 subunits. Target proteins were identified by western blot analysis with specific monoclonal antibodies. The levels of gene expression were determined by the RT-PCR method. The results demonstrate that GA-COS effectively reduces nitric oxide generation and downregulates iNOS protein and cytokine expression and NF-κB signalling in lipopolysaccharide (LPS) -induced RAW 264.7 cells. GA-COS exhibits significantly enhanced anti-inflammatory activity compared to the free chitooligosaccharide chain. This study lays the groundwork for future research to demonstrate that GA-COS holds significant potential as a novel compound for the prevention of inflammatory diseases.","PeriodicalId":18650,"journal":{"name":"Ministry of Science and Technology, Vietnam","volume":"16 42","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140240671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the equilibrium and kinetics of nickel (II) adsorption on cellulose from peanut shell modified with chitosan 壳聚糖改性花生壳纤维素吸附镍 (II) 的平衡和动力学研究

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-15 DOI: 10.31276/vjste.66(1).24-33

Thi Lan Phung, Thi Kim Giang Nguyen, Phuong Hien Ho, Thanh Nga Pham

{"title":"Study on the equilibrium and kinetics of nickel (II) adsorption on cellulose from peanut shell modified with chitosan","authors":"Thi Lan Phung, Thi Kim Giang Nguyen, Phuong Hien Ho, Thanh Nga Pham","doi":"10.31276/vjste.66(1).24-33","DOIUrl":"https://doi.org/10.31276/vjste.66(1).24-33","url":null,"abstract":"In this study, cellulose was produced by activating peanut shells with 5% NaOH as an alkaline agent and bleaching with 5 wt.% H2O2. Before being modified with chitosan, the cellulose was slightly oxidized with ammonium persulfate to introduce carboxyl groups. The equilibrium and kinetics of nickel adsorption on the as-prepared material were investigated. Langmuir, Freundlich, and Temkin isotherm models were used to describe the equilibrium isotherms. The Langmuir and Temkin adsorption isotherms were better fits to the equilibrium data than the Freundlich equation. The Langmuir monolayer adsorption capacity of nickel ions on cellulose from peanut shells modified with chitosan was found to be 25.70 mg/g. The Temkin adsorption constant was calculated as 0.45 kJ/mol. Therefore, the interaction between nickel ions and the surface of the as-prepared material are assumed to be weak. Kinetic data were evaluated by pseudo-first-order and pseudo-second-order models, and rate constants were determined. Simulations demonstrated that the pseudo-second-order equation could adequately describe the adsorption of nickel ions.","PeriodicalId":18650,"journal":{"name":"Ministry of Science and Technology, Vietnam","volume":"92 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140239664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of annealing temperature and doping concentrations on structure and optical properties of Eu3+-doped TiO2 nanomaterials 退火温度和掺杂浓度对 Eu3+ 掺杂 TiO2 纳米材料结构和光学特性的影响

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-15 DOI: 10.31276/vjste.66(1).10-15

Nguyen Tri Tuan, T. Tam, Nguyen Tu, D. Q. Trung, N. V. Du, Tran Minh Tien, Vu Thi Hang, Nguyen Trong Tuan, N. V. Quang, M. Tran

{"title":"Effect of annealing temperature and doping concentrations on structure and optical properties of Eu3+-doped TiO2 nanomaterials","authors":"Nguyen Tri Tuan, T. Tam, Nguyen Tu, D. Q. Trung, N. V. Du, Tran Minh Tien, Vu Thi Hang, Nguyen Trong Tuan, N. V. Quang, M. Tran","doi":"10.31276/vjste.66(1).10-15","DOIUrl":"https://doi.org/10.31276/vjste.66(1).10-15","url":null,"abstract":"In this study, we successfully synthesized europium-doped TiO2 (TiO2:Eu3+) nanomaterials (NMs) with crystalline sizes ranging from 6.5 to 71.7 nm through a sol-gel method. Analysis of X-ray diffraction (XRD) patterns and ultraviolet-visible (UV-Vis) spectra indicates that the substitution of smaller-sized Ti4+ ions (0.745 Å) by larger-sized Eu3+ ions (0.947 Å) was more efficient at higher doping concentrations and annealing temperatures. Photoluminescence (PL) and photoluminescence excitation (PLE) spectra of the synthesized TiO2:7%Eu3+NMs exhibit a strong red emission band peaking at 613 nm and remarkable absorption in the blue light region centered at 463 nm, making them suitable for use in white light-emitting diode (WLED) applications. Our findings reveal that both annealing temperature and doping concentration significantly influence the structure and properties of these materials. Besides, the research team has seen, under the experimental conditions, the TiO2:7%Eu3+ sample annealed at 800°C exhibits the highest PL intensity. These results underscore the potential of the synthesized TiO2:Eu3+ NMs as red-emitting materials for WLED applications.","PeriodicalId":18650,"journal":{"name":"Ministry of Science and Technology, Vietnam","volume":"23 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140240391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of humidity and temperature on quality factor of micro-beam resonators in atmospheric pressure and gas rarefaction 湿度和温度对常压和气体稀释微束谐振器品质因数的影响

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-15 DOI: 10.31276/vjste.66(1).03-09

Nguyen Chi Cuong, T. X. Thang, Lam Minh Thinh, Vuong Dinh Duy Phuc, Phan Minh Duc Truong, Truong Huu Ly, Ngo Vo Ke Thanh, Le Quoc Cuong

{"title":"Effects of humidity and temperature on quality factor of micro-beam resonators in atmospheric pressure and gas rarefaction","authors":"Nguyen Chi Cuong, T. X. Thang, Lam Minh Thinh, Vuong Dinh Duy Phuc, Phan Minh Duc Truong, Truong Huu Ly, Ngo Vo Ke Thanh, Le Quoc Cuong","doi":"10.31276/vjste.66(1).03-09","DOIUrl":"https://doi.org/10.31276/vjste.66(1).03-09","url":null,"abstract":"At atmospheric pressure (p=101325 Pa), the effects of humidity and temperature on moist air become important when discussing the quality factor of micro-cantilever and micro-bridge resonators. The squeeze film damping (SFD) problem, the dominant damping source for micro-beam resonators, is modelled using the modified molecular gas lubrication (MMGL) equation with finite element modelling (FEM) in the eigenvalue problem. The MMGL equation is modified with the effective viscosity of moist air (μeff) to account for the effects of humidity and temperature. Other damping sources, such as thermoelastic damping (TED) and the support loss of micro-beam resonators, are also calculated. The quality factor of micro-beam resonators is then discussed over a wide range of temperatures and relative humidity levels at atmospheric pressure and gas rarefaction. The results show that the quality factor of micro-cantilever and micro-bridge resonators increases as both humidity and temperature rise in atmospheric pressure and gas rarefaction. Furthermore, the quality factor of a micro-bridge resonator with changes in humidity and temperature is significantly higher than that of a micro-cantilever resonator in atmospheric pressure and gas rarefaction.","PeriodicalId":18650,"journal":{"name":"Ministry of Science and Technology, Vietnam","volume":"69 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140238194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nursery rearing freshwater prawn, Macrobrachium rosenbergii, in biofloc system integrated with red seaweed, Gracilaria tenuistipitata, at different stocking densities under zero water exchange 在零换水条件下，以不同放养密度在生物絮团系统中饲养淡水对虾（Macrobrachium rosenbergii）（与红藻（Gracilaria tenuistipitata）结合使用

Ministry of Science and Technology, Vietnam Pub Date : 2024-03-15 DOI: 10.31276/vjste.66(1).77-83

Tien Hai Ly, Le Hoang Vu, Lý Văn Khánh, Nguyen Thi Ngoc Anh

{"title":"Nursery rearing freshwater prawn, Macrobrachium rosenbergii, in biofloc system integrated with red seaweed, Gracilaria tenuistipitata, at different stocking densities under zero water exchange","authors":"Tien Hai Ly, Le Hoang Vu, Lý Văn Khánh, Nguyen Thi Ngoc Anh","doi":"10.31276/vjste.66(1).77-83","DOIUrl":"https://doi.org/10.31276/vjste.66(1).77-83","url":null,"abstract":"This study was conducted to assess the effects of stocking densities on the water quality, survival and growth of the freshwater prawn Macrobrachium rosenbergii postlarvae (PL) cultured in a biofloc system integrated with red seaweed (Gracilaria tenuistipitata). Postlarvae prawns weighing 0.012±0.001 g were stocked at densities of 1,000, 1,500, 2,000, and 2,500 PL/m3, noted as D1, D1.5, D2, and D2.5, respectively. Each density treatment was replicated three times and randomly assigned to 12 plastic tanks of 150 l at a salinity of 10 ppt. Red seaweed was added at a rate of 1.5 kg/m3, and molasses was used as a carbon source to maintain a C:N ratio of 15:1. No water exchange occurred during the 30-day rearing period. Results indicated that water quality parameters, including TAN and NO2-, biofloc volume, total heterotrophic bacteria, and Vibrio spp. counts, increased at higher prawn densities but remained within the appropriate range for prawn performance. Growth rate in weight and survival of prawns decreased as stocking density increased, with D1 and D1.5 showing comparable and significantly higher results compared to D2 and D2.5. Prawn production increased with rising stocking density, with a significant difference among treatments (p<0.05). Furthermore, prawns in D1 and D1.5 exhibited significantly higher feed efficiency than those in D2 and D2.5. These findings suggest that nursery rearing of prawn PL at a density of 1,500 ind/m3 in a biofloc system integrated with red seaweed offers optimal growth and feed efficiency, while maintaining good water quality and conserving water resources.","PeriodicalId":18650,"journal":{"name":"Ministry of Science and Technology, Vietnam","volume":"2 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140241455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0