The financial cost of coccidiosis in Algerian chicken production: a major challenge for the poultry sector

Rahmani, Abderrahmen; Ahmed Laloui, Hamza; Kara, Radhouane; Dems, Mohamed Abdesselem; Cherb, Nora; Klikha, Abdenour; Blake, Damer P.

doi:10.1080/03079457.2024.2336091

Avian Pathology

2024

DOI: 10.1080/03079457.2024.2336091

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The financial cost of coccidiosis in Algerian chicken production: a major challenge for the poultry sector

Abderrahmen Rahmani,

Hamza Ahmed Laloui,

Radhouane Kara

et al.

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2024

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Cited by 2 publications

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Large-Scale Field Trials of an Eimeria Vaccine Induce Positive Effects on the Production Index of Broilers

Nguyen,

Yim,

Flores

et al. 2024

Vaccines

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Live coccidiosis vaccines have mainly been used to reduce Eimeria species infection, which is considered the most economically important disease in the poultry industry. Evaluation data on vaccine effectiveness through large-scale field experiments are lacking, especially in broilers. Thus, the effectiveness of a commercial coccidiosis vaccine was evaluated in approximately 900,000 chicks reared on three open-broiler farms where coccidiosis is prevalent. The vaccine’s effectiveness after vaccination of 1-day-old chicks was monitored using three parameters (lesion score, fecal oocyst shedding, and production index, PI) in nine trials performed three times on each farm. Lesion scores were confirmed in three different areas of the intestine because the vaccine contained four Eimeria species. The average lesion scores were 0.36 to 0.64 in the duodenal region, 0.30 to 0.39 in the jejuno-ileal region, and 0.18 to 0.39 in the cecal region. The average fecal oocyst shedding rate ranged from 19,766 to 100,100 oocysts per gram, showing large variations depending on farms and buildings within the farm. Compared with the PI of the previous 9–10 trials on each farm, the PI increased by 2.45 to 23.55. Because of the potential for perturbation of the fecal microbiota by live coccidiosis vaccines, the fecal microbiota was investigated using 16S rRNA microbial profiling. Although the β-diversity was significantly different in distribution and relative abundance among farms (PERMANOVA, pseudo-F = 4.863, p = 0.009), a Kyoto Encyclopedia of Genes and Genomes pathway analysis found no significant bacterial invasion of the epithelial cell pathway across farms. This large-scale field trial of a live Eimeria vaccine indicates that coccidiosis vaccines can have meaningful effects on the poultry industry and could be used as an alternative to the prophylactic use of anticoccidial drugs under field conditions.

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Large-Scale Field Trials of an Eimeria Vaccine Induce Positive Effects on the Production Index of Broilers

Nguyen,

Yim,

Flores

et al. 2024

Vaccines

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Effect of hydro-methanolic extract of Mangifera indica L. stem bark on body weight, pathological lesions, and hematology in experimental Eimeria tenella-infected broiler chickens

Ugwuoke,

Idika

2024

Span. j. agric. res.

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Aim of study: To evaluate the weight gain, pathological lesions, and hematology in broilers treated with hydro-methanol extract of Mangifera indica stem bark (MISB) after experimental exposure to Eimeria tenella infection. Material and methods: This investigation involved 56 three-week-old Ross 308 broilers, divided into 7 groups (A–G) of 8 birds each. Groups A–E were experimentally exposed to 25,000 oocysts of E. tenella orally. Groups A, B, and C were treated orally with graded doses of M. indica (250, 125 and 62.5 mg/kg, respectively), for seven consecutive days. Groups D (0.6 g/L sulfaquinoxaline, reference drug), E (infected non-treated), F (uninfected non-treated), and G (uninfected 125 mg/kg MISB-treated to validate effect of MISB on weight increase). After infection, blood and organs were extracted from each experimental group for hematology and pathology, and measurements of body weight gain and oocyst counts were made. Main results: M. indica improved (p<0.05) weight gain in MISB-treated broilers (A, B, C, and G). On day 6 post-infection (dpi), lesions of coccidiosis caused by E. tenella were observed in groups A, B, C, D, and E. The reduction in oocyst per gram of feces in the MISB and sulfaquinoxaline-treated groups was similar (p>0.05) after medication. Reduced packed cell volume at 7 dpi in the broilers of groups A (22.5% ± 0.7), B (27.0 % ± 2.83), and C (25.7 % ± 0.71), improved at 14 dpi after medication. Research highlights: M. indica improved weight gain, reduced oocyst shedding, and ameliorated cecal lesions in MISB-treated chickens.

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The financial cost of coccidiosis in Algerian chicken production: a major challenge for the poultry sector

Cited by 2 publications

References 35 publications

Large-Scale Field Trials of an Eimeria Vaccine Induce Positive Effects on the Production Index of Broilers

Large-Scale Field Trials of an Eimeria Vaccine Induce Positive Effects on the Production Index of Broilers

Effect of hydro-methanolic extract of Mangifera indica L. stem bark on body weight, pathological lesions, and hematology in experimental Eimeria tenella-infected broiler chickens

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