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dc.creatorMohammad Ridzuan, M.en_US
dc.creatorMD RADZI, N.en_US
dc.creatorSudirwan, F.en_US
dc.creatorAhmad, K.en_US
dc.creatorKua, B.en_US
dc.creatorChadag, V.en_US
dc.creatorNawi, M.en_US
dc.date.accessioned2021-02-01T10:56:19Z
dc.date.available2021-02-01T10:56:19Z
dc.date.issued2020en_US
dc.identifier.citationMohammad Ridzuan, M. S. Md Radzi, N. A. Sudirwan, F. et al. (2020). On-farm epidemiological surveillance of genetically improved farmed tilapia (GIFT) cultured at floating net cages in Pahang, Malaysia. Sains Malaysiana, 49(8): 1819-1827.en_US
dc.identifier.issn0126-6039en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12348/4489
dc.description.abstractIncidence of streptococcosis, parasitic infestation and Tilapia Lake Virus (TiLV) outbreaks in tilapia aquaculture were reported worldwide, affecting the production and poses a significant threat to sustainable aquaculture. There is limited information on genetically improved farmed tilapia (GIFT) strain with regard to its susceptibility against these diseases. Thus, eight months of farm-level epidemiology surveillance was conducted at a private tilapia farm from August 2017 to March 2018, to determine the prevalence of bacterial, parasite and TiLV in GIFT cage-culture. Throughout the study, a total of 205 tilapias were sampled and subjected to bacteriology, parasitology, and TiLV detection. Water quality parameters, fish weight and length, and associated clinical signs were noted. Mortality of cultured GIFT was recorded at 24.8% from initial stocking, where high mortality was observed in early four months of the culture period. Low prevalence of Streptococcus agalactiae (10.3%) was detected throughout the sampling period. S. agalactiae was successfully isolated in September (32%), October (4%), December (4%) and March (28%). Among other bacteria species that were isolated include Aeromonas hydrophila (4.6%), Staphylococcus spp. (5.1%) and Plesiomonas shigelloides (1.7%). Low prevalence (4-12%) of Cichlidogyrus spp. and Trichodina spp. was also observed during post-mortem. Reverse Transcriptase-Polymerase Chain Reaction (RT-PCR) analysis on all pooled sample of the liver, spleen, and brain showed negative TiLV reaction. This finding suggests that the localized risk in GIFT culture is minimal. However, much attention should be directed to reduce the severity of factors affecting fish health.en_US
dc.formatPDFen_US
dc.languageen, msen_US
dc.publisherPenerbit Universiti Kebangsaan Malaysiaen_US
dc.rightsCC-BY-4.0en_US
dc.sourceSains Malaysiana;49,(2020) Pagination 1819,1824en_US
dc.subjectgenetically improved farmed tilapia (gift)en_US
dc.subjectstreptococcosisen_US
dc.titleOn-farm epidemiological surveillance of genetically improved farmed tilapia (GIFT) cultured at floating net cages in Pahang, Malaysiaen_US
dc.typeJournal Articleen_US
cg.contributor.crpFishen_US
cg.contributor.funderCGIAR System Organizationen_US
cg.coverage.countryMalaysiaen_US
cg.coverage.regionSouth-Eastern Asiaen_US
cg.subject.agrovocepidemiologyen_US
cg.subject.agrovoctilapiaen_US
cg.subject.agrovocstreptococcus agalactiaeen_US
cg.contributor.affiliationWorldFishen_US
cg.contributor.affiliationNational Fish Health Research Division (NaFisH), Departmment of Fisheries (DOF)en_US
cg.contributor.affiliationUniversiti Sains Malaysiaen_US
cg.contributor.affiliationInternational Islamic University Malaysiaen_US
cg.identifier.statusOpen accessen_US
cg.identifier.ISIindexedISI indexeden_US
cg.contribution.worldfishauthorChadag, V.en_US
cg.description.themeSustainable aquacultureen_US
dc.identifier.doihttps://dx.doi.org/10.17576/jsm-2020-4908-06en_US
cg.creator.idVishnumurthy Mohan Chadag: 0000-0002-2574-284Xen_US


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