High efficacy and economical procedure of oral vaccination against Lactococcus garvieae/Streptococcus iniae in rainbow trout (Oncorhynchus mykiss)

Halimi, Mostafa; Alishahi, Mojtaba; Abbaspour, Mohammadreza; Ghorbanpoor, Masoud; Tabandeh, Mohammad Reza

doi:10.1016/j.fsi.2020.02.033

Cited by 19 publications

(15 citation statements)

References 34 publications

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“…Our laboratory‐produced injectable inactivated LG vaccine against tilapia resulted in RPS of 87.5% in an experimental trial (Tsai et al., 2013). A recent study on inactivated LG oral vaccine with chitosan–alginate capsules showed a RPS of 72.18 ± 9.8% when compared to that observed in non‐coated inactivated cells (35.83 ± 10.11%) (Halimi, Alishahi, Abbaspour, Ghorbanpoor, & Tab andeh, 2020).…”

Section: Discussionmentioning

confidence: 96%

Efficacy of a formalin‐inactivated Lactococcus garvieae vaccine in farmed grey mullet (Mugil cephalus)

Byadgi

Pulpipat

et al. 2020

Journal of Fish Diseases

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Lactococcosis [Lactococcus garvieae (LG)] is one of the most prevalent bacterial diseases affecting grey mullet (Mugil cephalus) aquaculture. Therefore, the present research evaluated the efficacy of formalin‐killed LG vaccine with an oil‐based adjuvant in grey mullet under laboratory and field trials. The laboratory evaluation for LG vaccine and its cross‐protection upon challenge in grey mullet found that single‐dose immunization of formalin‐killed LG with adjuvant resulted in 91.4% and 100% relative per cent survival (RPS) when challenged with homologous and heterologous strains. The levels of specific antibody titre and lysozyme activity increased significantly in the vaccinated group. Immune gene expression at 24 hr after challenge showed an increase in levels of pro‐inflammatory and anti‐inflammatory cytokines. A parallel field trial experiment was conducted to investigate the long‐term effectiveness of the LG vaccine. Results demonstrated that at one month and three months post‐immunization with heterologous strain, 100% RPS was recorded in the vaccinated group. The findings suggested that the formalin‐inactivated LG vaccine strain (S3) protected grey mullet against LG infection for a period of three months.

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Section: Discussionmentioning

confidence: 96%

Efficacy of a formalin‐inactivated Lactococcus garvieae vaccine in farmed grey mullet (Mugil cephalus)

Byadgi

Pulpipat

et al. 2020

Journal of Fish Diseases

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“…was observed in the D250 and D1000 groups. Up to date, several bacterial species within the genus Streptococcus spp have been reported as important pathogens of fish species including salmonids [53,54]. Previous in vivo studies have found that dietary essential oils/plant extracts such as rosemary (Rosmarinus officinalis), mangrove plant (Excoecaria agallocha), Aloe (Aloe vera), and Shirazi thyme (Zataria multiflora) are able to counteract Streptococcus pathogens in fish species via inhibition of bacterial growth, repressing of cytotoxin production, or by enhancing the non-specific immunity and disease resistance [55][56][57].…”

Section: Discussionmentioning

confidence: 99%

Effects of increasing dietary level of organic acids and nature-identical compounds on growth, intestinal cytokine gene expression and gut microbiota of rainbow trout (Oncorhynchus mykiss) reared at normal and high temperature

Pelusio

Rossi²,

Parma

et al. 2020

Fish & Shellfish Immunology

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“…Epidemics and pathogens such as Lactococcus garvieae , Streptococcus iniae , Yersinia ruckeri and Aeromonas hydrophila can in some cases lead to economic bankruptcy (Adel, Pourgholam, Zorriehzahra, & Ghiasi, 2016; Chen, Li, Yao, & Zhang, 2019; Halimi, Alishahi, Abbaspour, Ghorbanpoor, & Tabandeh, 2020). Although antibiotics can reduce the bacterial burden of the environment, excessive use of antibiotics can be harmful.…”

Section: Introductionmentioning

confidence: 99%

“…Systemic infection of fish to opportunistic bacteria such as L. garvieae , S. iniae , Y. ruckeri and A. hydrophila usually leads to internal bleeding, subcutaneous haemorrhage, edema as well as accumulation of infectious fluids in abdomen and affects vital organs such as the liver, spleen and kidney(Adel, Pourgholam, et al, 2016; Chen et al., 2019; Halimi et al., 2020). Therefore, measuring blood biochemical parameters, immunological factors and serum bactericidal activity can indicate the health status of fish dealing with pathogens.…”

Section: Introductionmentioning

confidence: 99%

The potential benefits of Mentha longifolia on growth performance and innate immunity parameters in Caspian kutum ( Rutilus frisii kutum )

et al. 2020

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The current research was conducted to examine the benefits of Mentha longifolia (ML) administration through diet on growth performance and haematological, biochemical, and immunological parameters of Caspian kutum (Rutilus frisii kutum). Fish with average weight of 3 g were fed for 8 weeks with diets supplemented with 0%, 2%, 4% and 6% ML‐extract. Feeding with 6% ML for 8 weeks significantly improved the growth performance. The highest values in total protein content, protease and esterase activities were observed in the 6% ML. Feeding with 4% and 6% ML led to a significant increase in the alternative complement, respiratory burst activities and total immunoglobulins in blood as well as lysozyme activity in the mucus and serum. The enhancement of skin mucus immune parameters was observed in fish fed with dietary (≥4%) ML supplement. The mucosal antibacterial effects revealed that the highest ML concentration (6%) had the maximum bacterial growth inhibition zone diameter (mm) and MIC compared with other groups in the study. White blood cell numbers and haematocrit values were significantly higher than in the control groups following the use of 4% and 6% ML. The highest red blood cell counts resulted from the use of 6% ML. Although 4% and 6% ML led to a decrease in the number of lymphocytes, the neutrophils increased after using the same dose, compared with the control group. Triglycerides levels significantly decreased in fish fed with 4% and 6% ML; however, no significant changes were observed in other blood biochemical parameters. Thus, it can be concluded that diets supplemented with ML‐extract could significantly impact Caspian kutum by improving growth performance and boosting their immune response.

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High efficacy and economical procedure of oral vaccination against Lactococcus garvieae/Streptococcus iniae in rainbow trout (Oncorhynchus mykiss)

Cited by 19 publications

References 34 publications

Efficacy of a formalin‐inactivated Lactococcus garvieae vaccine in farmed grey mullet (Mugil cephalus)

Efficacy of a formalin‐inactivated Lactococcus garvieae vaccine in farmed grey mullet (Mugil cephalus)

Effects of increasing dietary level of organic acids and nature-identical compounds on growth, intestinal cytokine gene expression and gut microbiota of rainbow trout (Oncorhynchus mykiss) reared at normal and high temperature

The potential benefits of Mentha longifolia on growth performance and innate immunity parameters in Caspian kutum ( Rutilus frisii kutum )

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