Comparison of breeder/layer coccidiosis vaccines: Part 1 -precocity and pathogenicity

Mathis, Greg F.; Newman, Linnea J; Fitz-Coy, Steve; Lumpkins, Brett; Charette, Robert N.; Fuller, Lorraine

doi:10.3382/japr/pfx037

Cited by 12 publications

(19 citation statements)

References 19 publications

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“…It is clear from this study that coccidiosis vaccine overdose can be used alternative challenge strain to Eimeria field isolates [11][12][13] and dietary SAL exhibited anticoccidial effect [22]. Addition of EEO into the diets of broilers challenged with coccidiosis vaccine mitigated Eimeria vaccine-induced depression in body weight gain and feed intake without affecting feed conversion ratio.…”

Section: Discussionmentioning

confidence: 80%

“…This might be related to the live/attenuated vaccine strain used to induce avian coccidiosis in this study and/or delayed sampling which conducted at 7 days post challenge. Thus, the reported coccidiosis lesions [13] by vaccine strain might have been weakened or partially recovered. In general, it is reported that field isolates of Eimeria could induce more severe gut lesions compared with coccidiosis vaccine overdose [13].…”

Section: Discussionmentioning

confidence: 99%

“…Thus, the reported coccidiosis lesions [13] by vaccine strain might have been weakened or partially recovered. In general, it is reported that field isolates of Eimeria could induce more severe gut lesions compared with coccidiosis vaccine overdose [13]. It would need to use more vaccine doses if it is considered feasible to induce severe gut lesion scores.…”

Section: Discussionmentioning

confidence: 99%

“…Each treatment had ten replicates of 12 chicks each (n=120 chicks/treatment) except for the control group which had 20 replicates. At 21 days, half of control groups (n=10 replicates/treatment) and all experimental groups were orally gavaged with 25x recommended dose to induce coccidiosis [11][12][13]. Chickens not inoculated with coccidiosis vaccine were considered non-challenged control groups (n=10 replicates/treatment).…”

Section: Experimental Design Animals and Dietsmentioning

confidence: 99%

“…The purpose of this study was to investigate the effects of thymol and carvacrol-based EEO on the productivity and gut health of broiler chicks inoculated with high doses of coccidiosis vaccine. In this study, we used live coccidiosis vaccine to induce experimental coccidiosis as documented elsewhere [11][12][13]. Earlier conflicting reports that Eimeria infection decreased rectal temperature [14] or dietary EEO relieved heat-stress chickens [15,16] attempted us to measure the body surface temperature of the challenged chickens.…”

Section: Introductionmentioning

confidence: 99%

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Dietary Encapsulated Essential Oils Improve Production Performance of Coccidiosis Vaccine-challenged Broiler Chickens

Lee¹,

Kim²,

Kim³

et al. 2020

Preprint

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The present study was conducted to evaluate encapsulated essential oils as an alternative anticoccidial in coccidiosis vaccine challenged broiler chickens. A total of 600 day-old male broiler chicks were provided with no-added corn-soybean meal-based control diet or diets that contained either salinomycin or EO at 60 and 120 mg per kg of diet. On day 21, half of the control groups were orally challenged with a coccidiosis vaccine at 25 times higher than the recommended vaccine dose. During 22 to 28 days (i.e., one-week post coccidiosis vaccine challenge), the challenged chickens had decrease (P < 0.05) in body weight gain and feed intake but increase in feed conversion ratio compared with the non-challenged, naïve control chickens. However, dietary EO significantly counteracted (P < 0.05) coccidiosis vaccine-induced depression in body weight gain and feed intake. Increasing dietary EO linearly decreased (P < 0.05) the concentrations of the volatile fatty acids. Dietary SAL and EO affected gut morphology in chickens at 20 days posthatch. Increasing dietary EO linearly (P = 0.073) increased serum catalase activity. Collectively, our study shows that dietary EO increased coccidiosis vaccine-induced growth depression and altered gut physiology in broiler chickens.

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Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Experimental Design Animals and Dietsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Dietary Encapsulated Essential Oils Improve Production Performance of Coccidiosis Vaccine-challenged Broiler Chickens

Lee¹,

Kim²,

Kim³

et al. 2020

Preprint

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Vaccines against chicken coccidiosis with particular reference to previous decade: progress, challenges, and opportunities

et al. 2022

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Chicken coccidiosis is an economically significant disease of commercial chicken industry accounting for losses of more than £10.4 billion (according to 2016 prices). Additionally, the costs incurred in prophylaxis and therapeutics against chicken coccidiosis in developing countries (for instance Pakistan according to 2018 prices) reached US $45,000.00 while production losses for various categories of chicken ranges 104.74 to US $2,750,779.00. The infection has been reported from all types of commercial chickens (broiler, layer, breeder) having a range of reported prevalence of 7–90%. The concern of resistance towards major anticoccidials has provided a way forward to vaccine research and development. For prophylaxis of chicken coccidiosis, live virulent, attenuated, ionophore tolerant strains and recombinant vaccines have been extensively trialed and commercialized. Eimeria antigens and novel vaccine adjuvants have elicited the protective efficacy against coccidial challenge. The cost of production and achieving robust immune responses in birds are major challenges for commercial vaccine production. In the future, research should be focused on the development of multivalent anticoccidial vaccines for commercial poultry. Efforts should also be made on the discovery of novel antigens for incorporation into vaccine designs which might be more effective against multiple Eimeria species. This review presents a recap to the overall progress against chicken Eimeria with particular reference to previous decade. The article presents critical analysis of potential areas for future research in chicken Eimeria vaccine development.

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Effect of ethanol extract from Enterolobium cyclocarpum fruit on Leghorn chickens exposed to Eimeria

Urtecho-Novelo,

Santos-Ricalde,

Sarmiento-Franco

et al. 2024

Trop Anim Health Prod

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Comparison of breeder/layer coccidiosis vaccines: Part 1 -precocity and pathogenicity

Cited by 12 publications

References 19 publications

Dietary Encapsulated Essential Oils Improve Production Performance of Coccidiosis Vaccine-challenged Broiler Chickens

Dietary Encapsulated Essential Oils Improve Production Performance of Coccidiosis Vaccine-challenged Broiler Chickens

Vaccines against chicken coccidiosis with particular reference to previous decade: progress, challenges, and opportunities

Effect of ethanol extract from Enterolobium cyclocarpum fruit on Leghorn chickens exposed to Eimeria

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