Immune Responses to Eimeria tenella Sporozoite Protein as Vaccine to Broiler Against Coccidiosis

Al-Idreesi, Suhair R.; Kweider, Mahmoud; Katranji, Mahmad M.

doi:10.3923/ijps.2013.582.589

Cited by 2 publications

(1 citation statement)

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“…The Eimeria species have been identified by morphology and/or morphometry of their sporocysts and oocysts as well as their modes of development, and assessing the site and extent of the pathological lesions in the intestine of chicken (Aarthi et al, 2010). However, these methods of identifications are costly, time-consuming, require skilled personnel and can be unreliable under the circumstances of mixed-field infections, particularly when the overlap in biological and morphological characteristics make the unambiguous identification and differentiation of Eimeria species impossible (Al-Idreesi et al, 2013;Carvalho et al, 2011). Eimeria oocysts can be isolated according to the method of Davies et al (1963) and can be identified by sporulation time using potassium dichromate solution for sporulation and preservation of the parasite (Ryley et al, 1976)…”

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confidence: 99%

Epidemiology and identification of Eimeria species affecting poultry in East Gojjam Zone, North West Ethiopia

Cheru,

Tamrat,

Hailemelekot

et al. 2023

Veterinary Medicine & Sci

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BackgroundDespite the expansion of modernized poultry farming in Ethiopia, the presence of high prevalence of Eimeria species is the bottleneck in the sector causing high morbidity and mortality rate in poultry.ObjectivesThe objectives of this study were to estimate the prevalence and identify Eimeria species and investigate the major risk factors.MethodA cross‐sectional study was conducted from November 2019 to April 2020 in East Gojjam Zone, North West Ethiopia. A total of 384 chickens were used. Both floatation and McMaster coprological techniques were employed. Univariate and multinomial logistic regression was used to calculate the odds ratio for the associated risk factors. Analysis of variance was used to analyse differences in Eimeria oocyst counts among the groups.ResultsOverall prevalence of Eimeria species in poultry from the study area was 26.5%. Age (OR = 0.25, p = 0.001), management system (OR = 12.44, p = 0.001) and production system (OR = 0.37, p = 0.001) were found significantly (p < 0.05) associated with the risk of Eimeria species in poultry. The mean Eimeria oocyst count was significantly different by age and management system (F = 6.526, p = 0.002), (F = 5.369, p = 0.005), respectively. The mean Eimeria oocyst count was significantly greater in 6–12 weeks (p = 0.004) and <6 weeks of age (p = 0.025). A total of 6 Eimeria species were identified. Eimeria tenella (46.07%), Eimeria necatrix (24.5%) and Eimeria acervulina (8.82%) were the most common Eimeria species encountered.ConclusionThe prevalence of Eimeria species was higher in poultry in North West Ethiopia. Therefore, tailor‐made intervention is required to mitigate risk factors and reduce the prevalence of Eimeria species in poultry from the study area.

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Section: Introductionmentioning

confidence: 99%

Epidemiology and identification of Eimeria species affecting poultry in East Gojjam Zone, North West Ethiopia

Cheru,

Tamrat,

Hailemelekot

et al. 2023

Veterinary Medicine & Sci

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A review of Eimeria antigen identification for the development of novel anticoccidial vaccines

Venkatas

Adeleke

2019

Parasitol Res

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Coccidiosis is a major poultry disease which compromises animal welfare and costs the global chicken industry a huge economic loss. As a result, research entailing coccidial control measures is crucial. Coccidiosis is caused by Eimeria parasites that are highly immunogenic. Consequently, a low dosage of the Eimeria parasite supplied by a vaccine will enable the host organism to develop an innate immune response towards the pathogen. The production of traditional live anticoccidial vaccines is limited by their low reproductive index and high production costs, among other factors. Recombinant vaccines overcome these limitations by eliciting undesired contaminants and prevent the reversal of toxoids back to their original toxigenic form. Recombinant vaccines are produced using defined Eimeria antigens and harmless adjuvants. Thus, studies regarding the identification of potent novel Eimeria antigens which stimulate both cell-mediated and humoral immune responses in chickens are essential. Although the prevalence and risk posed by Eimeria have been well established, there is a dearth of information on genetic and antigenic diversity within the field. Therefore, this paper discusses the potential and efficiency of recombinant vaccines as an anticoccidial control measure. Novel protective Eimeria antigens and their antigenic diversity for the production of cheap, easily accessible recombinant vaccines are also reviewed.

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Immune Responses to Eimeria tenella Sporozoite Protein as Vaccine to Broiler Against Coccidiosis

Cited by 2 publications

References 29 publications

Epidemiology and identification of Eimeria species affecting poultry in East Gojjam Zone, North West Ethiopia

Epidemiology and identification of Eimeria species affecting poultry in East Gojjam Zone, North West Ethiopia

A review of Eimeria antigen identification for the development of novel anticoccidial vaccines

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