Eimeria spp. in naturally infected beef cattle: Dynamics of oocysts excretion, prevalence, and comparison between parasitological diagnostics

Cruvinel, Leonardo Bueno; Ferreira, Lorena Lopes; Nicaretta, João Eduardo; Couto, Luiz Fellipe Monteiro; Zapa, Dina María Beltrán; Cavalcante, Alliny Souza de Assis; Heller, Luciana Maffini; Melo, Rubens Dias de; Gontijo, Lídia Mendes de Aquino; Suzuki, Karina; Soares, Vando Edésio; Lopes, Welber Daniel Zanetti

doi:10.1016/j.prevetmed.2021.105447

Cited by 8 publications

(3 citation statements)

References 36 publications

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“…This finding agrees with Quiroz & Casillas (1971) who described E. bovis as the most frequent in cattle. These results are also consistent with several authors reporting the species E. bovis and E. zuernii identified more frequently in the fecal samples analyzed (Bruhn et al, 2012;Lee et al, 2018;Hamid et al, 2019;Ola-Fadunsin et al, 2020;Cruvinel et al, 2021). Although mixed infections are commonly observed under natural conditions, only two highly pathogenic species E. zuernii and E. bovis are generally involved in the highest number of clinical cases in calves and can cause moderate to severe enteritis (Daugschies & Najdrowski, 2005).…”

Section: Discussionsupporting

confidence: 91%

Prevalence and risk factors of coccidiosis in calves from Veracruz, México

Olivares-Muñoz

Alonso-Díaz

Romero-Salas

et al. 2022

Rev. Bras. Parasitol. Vet.

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The objectives of the present study were: (1) to determine the prevalence of Eimeria spp. sporulated oocysts in calves from 26 Municipalities in the Central Zone of the State of Veracruz, Mexico, (2) to identify the Eimeria spp. infecting calves, and (3) to identify the risk factors associated with the presence of Eimeria spp. in tropical cattle. A total of 930 individual fecal samples were analyzed by using the McMaster technique; then, oocysts were maintained in 2.5% potassium dichromate to allow sporulation. The general prevalence of calves with Eimeria spp. oocysts was 39.7% (370/930). Of a total of 10 identified species, Eimeria canadensis was the most observed, followed by Eimeria bovis and Eimeria zuernii. The statistical analysis showed an association between the age of the calves (5 to 9 months), the presence of other animals, the physiographic regions and the restricted type of husbandry with the presence of Eimeria spp. in calves (P<0.05). Protective risk factors, such as: routine coprological analysis was also associated with a decrease in infection. These data demonstrate the presence of coccidia in cattle from the State of Veracruz, additionally to the necessary measures that must be taken to control this parasitosis.

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Section: Discussionsupporting

confidence: 91%

Prevalence and risk factors of coccidiosis in calves from Veracruz, México

Olivares-Muñoz

Alonso-Díaz

Romero-Salas

et al. 2022

Rev. Bras. Parasitol. Vet.

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“…Four farms were investigated, showing high variability regarding Eimeria oocyst presence. This can be attributed to farm specific differences in management practises, animal husbandry and weather conditions (Bangoura and Bardsley 2020 ; Tomczuk et al 2015 ; Cruvinel et al 2021 ). Besides, the four study farms were visited and material collected repeatedly over 2–4 days throughout a sampling period of 47 days after arrival of calves at the farm.…”

Section: Discussionmentioning

confidence: 99%

A pilot study for the isolation of Eimeria spp. oocysts from environmental straw samples in comparison with individual faecal examination of fattening calves

et al. 2023

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The diagnosis of eimeriosis in calves mainly relies on the presence of diarrhoea and the excretion of Eimeria oocysts in the faeces. Restraining the animals to collect rectal samples for diagnostic purposes is stressful and time-consuming. The aim of this study was to evaluate a method for the quantification of oocysts in environmental barn straw samples. To investigate the recovery rate of the method, straw and Eimeria negative faeces were spiked with Eimeria oocysts in plastic bags and mixed with water and 0.05% Tween 20 (v/v); the liquids were filtered twice through sieves (mesh size 300 and 52 μm), centrifuged and the number of oocysts in the sediment determined using a McMaster counting chamber. A recovery rate of 52.4% (95% confidence interval: 48.2–56.5%) was obtained. In the following, field straw (n = 156) and individual faecal samples (n = 195, also analysed by McMaster counting chambers) were collected on four different farms. Eimeria oocysts were present on all farms in faecal (84/195, 43.1%) and straw samples (119/156, 76.3%). In 37 (23.7%) straw samples, sporulated oocysts were observed, with a sporulation rate ranging from 0 to 40%. Despite high variability between farms and examination days, mean numbers of oocysts in the straw positively correlated with mean numbers of oocysts excreted in the faeces (ρSpearman = 0.60). The examination of environmental straw samples may represent an easy-to-perform, non-invasive, inexpensive preliminary diagnostic approach for surveillance of eimeriosis at group level, having the potential to assess the infection pressure.

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“…Eimeria spp. counts has been compared in relatively few ruminant species ( Silva et al., 2013 ; Cruvinel et al., 2021 ). Moniezia spp.…”

Section: Discussionmentioning

confidence: 99%

A comparison of Mini-FLOTAC and McMaster techniques, overdispersion and prevalence of parasites in naturally infected North American bison (Bison bison) in the USA

Johnson

Reynolds

Adkins

et al. 2022

Current Research in Parasitology & Vector-Borne Diseases

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Eimeria spp. in naturally infected beef cattle: Dynamics of oocysts excretion, prevalence, and comparison between parasitological diagnostics

Cited by 8 publications

References 36 publications

Prevalence and risk factors of coccidiosis in calves from Veracruz, México

Prevalence and risk factors of coccidiosis in calves from Veracruz, México

A pilot study for the isolation of Eimeria spp. oocysts from environmental straw samples in comparison with individual faecal examination of fattening calves

A comparison of Mini-FLOTAC and McMaster techniques, overdispersion and prevalence of parasites in naturally infected North American bison (Bison bison) in the USA

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