Anticoccidial Drug Sensitivity of Eimeria Contained in Live Coccidia Vaccines of Broilers, Breeders, and Turkeys

Mathis, Greg F.; Van-Heerden, Kobus; Lumpkins, Brett

doi:10.1637/aviandiseases-d-21-00026

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…There were no reports on the use of coccidiosis vaccination on visited farms. Nonetheless, promotion of parasite control through vaccinations is needed in this region, especially for the most pathogenic species, since use of vaccinations promotes restoration of parasite sensitivity to medications and promotes good immunity if used at the correct dosage ( 29 , 30 ). Vaccinations can, however, make animals test positive, and oocysts are not visually different from environmental pathogenic oocysts, except for oocysts belonging to the species E. brunetti and E. praecox , for which no commercial vaccines exist ( 28 ).…”

Section: Discussionmentioning

confidence: 99%

Prevalence and diversity of Eimeria spp. in free-range chickens in northeastern Brazil

et al. 2022

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In tropical regions, family farming is a form of production and work that is highly present in rural areas. Because the production system for free-range chickens has a low level of technification, it frequently presents massive infection by coccidia. The objective of this study was to determine the prevalence and diversity of Eimeria species in free-range chickens in northeastern Brazil. Fecal analyses were carried out using materials collected from 100 farms, belonging to 10 different municipalities. The sample from each farm was composed of five stool samples collected from different animals. Coproparasitological analyses were performed and, in each positive sample, photomicrographs of 20 oocysts were used for morphological identification of coccidia. The presence of Eimeria spp. was detected in 59% (59/100) of the farms analyzed. Species identification was performed through morphometric analysis of 1,180 sporulated oocysts. The following eight species of Eimeria spp. were found, in decreasing order of prevalence: Eimeria necatrix (25%), Eimeria mitis (18.3%), Eimeria mivati (17.3%), Eimeria tenella (12.4%), Eimeria brunetti (9.9%), Eimeria acervulina (9.1%), Eimeria praecox (4.8%) and Eimeria maxima (3.2%). The prevalence and diversity of Eimeria spp. on farms producing backyard chickens in the semiarid region of Brazil were high, especially the diversity of species. Changing the management, with the adoption of sanitary measures, may be effective in reducing the high prevalence of coccidia on the farms studied.

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Section: Discussionmentioning

confidence: 99%

Prevalence and diversity of Eimeria spp. in free-range chickens in northeastern Brazil

et al. 2022

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“…However, overusing these medications can result in tissue residues, drug resistance, and drug toxicity . Undesirably, no new drugs have been approved for use as anticoccidials, and this has led to a rise in the demand for new anticoccidial substitutes. In the veterinary field more recently, nanotechnology methods have been applied to the development of therapeutics and preventatives as well as disease diagnostics .…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of ZnO/CuO Nanocomposites Using Parsley Extract for Potential In Vitro Anticoccidial Application

Hamad,

Barzinjy,

Rafigh

et al. 2023

ACS Appl. Bio Mater.

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In this study, a simple, low-cost, and environmentally friendly method for the green synthesis of ZnO/CuO nanocomposites (NCs) using parsley extract was developed. The phytochemical components in the parsley leaf extract reacted with precursor salts in solution and yielded ZnO/CuO NCs. The synthesis of the green-synthesized NCs was confirmed via various characterization techniques, including UV−vis spectroscopy, X-ray diffraction (XRD) analysis, energy-dispersive X-ray (EDX), transmission electron microscopy (TEM), and field emission scanning electron microscopy (FE-SEM). Subsequently, the NCs were subjected to rigorous in vitro evaluation of their anticoccidial properties. The results showed that the NCs had a spherical shape within an average particle size of around 70 nm. The green-synthesized NCs were evaluated for their in vitro anticoccidial activity against Eimeria spp. The findings showed that the NCs exhibited a significant anticoccidial effect, with a maximum inhibition of 55.3 ± 0.32% observed at a concentration of 0.5 mg/mL. The exposure to the NCs resulted in notable alterations in the ultrastructure of the oocysts when compared to the control group. The ZnO/CuO NCs synthesized from the parsley leaf extract showed promising potential against coccidiosis and could be used in biomedical applications. Further investigation using an in vivo model is required to ascertain the efficacy of NCs as anticoccidial agents.

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Anticoccidial Drug Sensitivity of Eimeria Contained in Live Coccidia Vaccines of Broilers, Breeders, and Turkeys

Cited by 2 publications

References 13 publications

Prevalence and diversity of Eimeria spp. in free-range chickens in northeastern Brazil

Prevalence and diversity of Eimeria spp. in free-range chickens in northeastern Brazil

Green Synthesis of ZnO/CuO Nanocomposites Using Parsley Extract for Potential In Vitro Anticoccidial Application

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