<i>Yersinia ruckeri</i> infection in cultured Nile tilapia, <i>Oreochromis niloticus</i>, at a semi-intensive fish farm in lower Egypt

Eissa, Alaa Eldin; Moustafa, M. M.; Abdelaziz, M. A.; Ezzeldeen, NA

doi:10.2989/ajas.2008.33.3.13.625

Cited by 27 publications

(28 citation statements)

References 13 publications

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“…To the extent of our knowledge, the present study is the first record of C. perfringens type D as pathogenic bacteria under stress conditions in fish. In contrast, there are many records of Y. ruckeri infection in tilapia [88]. The defense mechanism of the innate immune system is formed by a series of essential functions that keep host cells alive, healthy and protected from pathogens.…”

Section: Discussionmentioning

confidence: 99%

Improvement of immunity and disease resistance in the Nile tilapia, Oreochromis niloticus, by dietary supplementation with Bacillus amyloliquefaciens

Selim

Reda

2015

Fish & Shellfish Immunology

173

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Section: Discussionmentioning

confidence: 99%

Improvement of immunity and disease resistance in the Nile tilapia, Oreochromis niloticus, by dietary supplementation with Bacillus amyloliquefaciens

Selim

Reda

2015

Fish & Shellfish Immunology

173

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“…Challenged fish were kept under observation for 14 d to record ERM. Samples were taken from the kidney and intestine of dead and clinically infected fish to re-isolate Y. ruckeri (Eissa et al 2008). The average mortality among all replicates was used for calculating relative percent survival (RPS; Amend 1981).…”

Section: Methodsmentioning

confidence: 99%

Beta‐Glucans and Mannan Oligosaccharides Enhance Growth and Immunity in Nile Tilapia

Selim

Reda

2014

N American J Aquac

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We studied the effects of a combination of dietary beta‐glucans (β‐G) and mannan oligosaccharides (MOS) on Nile Tilapia Oreochromis niloticus. Three‐hundred‐sixty fingerlings (mean mass ± SD = 8.7 ± 0.4 g) were separated into three groups (G1, G2, and G3) of 120 fish; G1 (control group) was fed a basal diet, whereas G2 and G3 were fed prebiotic‐supplemented diets at final levels of 1.5 and 3.0 g/kg feed, respectively. Each group was subdivided into two subgroups: subgroup A was fed for 60 d to evaluate growth performance, nutrient utilization, intestinal morphometry, and body composition; and subgroup B was fed for 30 d to evaluate immune status and disease resistance. The best growth and feed utilization were observed in G3. There was no significant difference in final body weight or weight gain between G2 and G1 after 30 d, whereas both variables were significantly higher in G2 than in G1 after 60 d. At the end of the feeding period, G2 had a better feed conversion ratio than G1. Villus height, number of goblet cells, and number of intraepithelial lymphocytes were greatest in G3, followed by G2 and then G1. Whole‐body protein content and fat content were higher in G3 than in G2 and G1. Only G3 had significantly higher serum total protein, albumin, and globulin than G1. Serum killing percentage and phagocytic activity were significantly higher in G3 than in G1 and G2, whereas serum lysozyme activity was significantly higher in G3 and G2 than in G1. The nitric oxide assay indicated a significant effect in G3 compared with G1 after 30 d. Fish that were fed the prebiotic mixture had better relative percent survival than G1 fish after challenge with Yersinia ruckeri. Dietary supplementation with β‐G and MOS in combination improves the performance of Nile Tilapia.

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“…Of the 130 fish analysed, Y. ruckeri was isolated from 100 samples (prevalence 66.6%). The mortality rate in the described case reached 87% of the stock, which suggests high pathogenicity of Y. ruckeri to Nile tilapia (Eissa et al, ).…”

Section: Family Cichlidaementioning

confidence: 63%

“…Eissa, Moustafa, Abdelaziz, and Ezzeldeen (2008) published one of the first literature reports about yersiniosis in tilapia. The disease occurred in fish farmed in a semi-intensive system in the Sharkiya province (Egypt).…”

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confidence: 99%

Yersinia ruckeri —A threat not only to rainbow trout

et al. 2019

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Yersinia ruckeri (Y. ruckeri) can cause mortalities that are contributing to substantial economic losses in the rainbow trout (Oncorhynchus mykiss) aquaculture sector. Because of its most characteristic clinical signs, the disease in rainbow trout caused by this pathogen is called enteric redmouth disease. Although it is considered to affect mainly salmonids, there are reports in the available literature of isolating this bacterium from other fish species, both clinically healthy and diseased. The aim of this study was to analyse the available data concerning yersiniosis in non‐salmonid fish. The analysed data indicate that Y. ruckeri is a threat not only to rainbow trout. Some of the affected species have high commercial importance and mortalities may contribute to high economic losses. The disease symptoms may not be specific and can be different from those characteristic for enteric redmouth in trout, which may lead to misdiagnosis. Collected information indicates that infection with Y. ruckeri should be taken into account in the diagnostic procedures not only in salmonids.

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Yersinia ruckeri infection in cultured Nile tilapia, Oreochromis niloticus, at a semi-intensive fish farm in lower Egypt

Cited by 27 publications

References 13 publications

Improvement of immunity and disease resistance in the Nile tilapia, Oreochromis niloticus, by dietary supplementation with Bacillus amyloliquefaciens

Improvement of immunity and disease resistance in the Nile tilapia, Oreochromis niloticus, by dietary supplementation with Bacillus amyloliquefaciens

Beta‐Glucans and Mannan Oligosaccharides Enhance Growth and Immunity in Nile Tilapia

Yersinia ruckeri —A threat not only to rainbow trout

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