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Correlation between Intestinal Health and Coccidiosis Prevalence in Broilers during Different Seasons of the Year in Brazil from 2012 to 2018

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Food and Nutrition Sciences 2024年第3期15卷 179-198页

作者： Fabio Luis Gazoni Gabriela Miotto Galli Marcel Manente Boiago Lenita Moura Stefani Aline Zampar Marco A. Juárez-estrada Guillermo Tellez-Isaias Aleksandro S. da Silva Animal Health and Reproduction Veterinary Medicine Graduate Program Federal University of Santa Maria (UFSM) Santa Maria Brazil Animal Science Graduate Program Federal University of Rio Grande do Sul (UFRGS) Porto Alegre Brazil Animal Science Graduate Program Santa Catarina State University (UDESC) Chapecó Brazil departamento de Medicina y zootecnia de Aves Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autonoma de Mexico Ciudad Universitaria Ciudad de Mexico Mexico department of Poultry Science Division of Agriculture University of Arkansas Fayetteville AR USA

Coccidiosis is a disease caused by intracellular protozoan parasites, specifically belonging to the genus eimeria. These parasites target the gastrointestinal tract in different types of hosts, causing sores in the intestinal lining. The presence of these lesions reduces the animal’s ability to digest and absorb nutrients, significantly impacting their overall performance. The current study aimed to explore the potential correlation between seasonal variations and the incidence of eimeria spp-induced lesions in broiler chickens’ gastrointestinal tracts in Brazil from 2012 to 2018. A total of 8,607 broiler chickens, aged 14 to 42 days, were sampled from 103 poultry integrated companies in Brazil to conduct intestinal health examinations. The sampling process involved selecting 3 to 6 chickens from each poultry house for examination. The assessment included various abnormalities such as shedding of intestinal cells and excessive fluid and mucus presence, thickening and tension of the intestines, food movement, roughened mucosal surface resembling a Turkish towel in the small intestine, tissue death, duodenal inflammation, intestinal inflammation, gizzard erosion, presence of worms and bedding material, and ingestion of mealworms. During the seasons, winter exhibited the highest average occurrence of eimeria maxima microorganisms at 52.83%, with e. acervulina following closely at 26.42% in second place. In spring, e. maxima had an occurrence of 11.31%, while in fall, e. tenella had the lowest occurrence at 6.74%. When analyzing the seasonal occurrence of eimeria, it was observed that e. maxima micro was more common during winter compared to summer (P = 0.0491). However, no discernible variation was observed in the occurrence of the remaining species across different seasons. Research findings suggest that subclinical coccidiosis is most prevalent during the winter season in Brazil. Likewise, clinical disease caused by e. acervulina is also prevalent during this time. I

关键词： eimeria epidemiology Intestinal Pathology Broiler Chickens Brazil

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Ocurrence of entomopathogenic Fungus from Flea Ctenocephalides canis(Siphonaptera:Pulicidae)

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Open Journal of Veterinary Medicine 2014年第12期4卷 281-285页

作者： Jonathan e.Ortega-Palomares Hector G.Nunez-Palenius Ana M.Cruz-Avalos Aaron A.Hernandez-Rangel Roberto Lezama-Gutierrez Cesar A.Angel-Sahagun Programa educativo de Medicina Veterinaria y zootecnia Division Ciencias de la VidaUniversidad de GuanajuatoCampus Irapuato-SalamancaIrapuatoMexico departamento de Agronomía Division Ciencias de la VidaUniversidad de GuanajuatoCampus Irapuato-SalamancaIrapuatoMexico Instituto Tecnologico Superior de Irapuato AbasoloMexico Posgrado en Biosciencias Division Ciencias de la VidaUniversidad de GuanajuatoCampus Irapuato-SalamancaIrapuatoMexico Facultad de Ciencias Biologicas y Agropecuarias Universidad de ColimaColimaMexico

The objective of this study was to isolate entomopathogenic fungus from fleas (Ctenocephalides canis Curtis) collected from Cannis familiaris specimens. From 60 collected fleas, two dead insects presented white mycelia growth on the body surface, changing to a creamy color as time passed;the insects presented a mummified aspect, typical characteristic caused by entomopathogenic fungus. This fungus was identified as Beauveria bassiana (Balsamo-Crivelli) Vuillemin by their mycelia characteristics, macro- and micro-morphology. Up to our knowledge, this is the first report of entomopathogenic fungus isolated from adult C. canis fleas.

关键词： ectoparasite Biological Control Dog Beauveria bassiana

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The effect of a<i>Lactobacillus</i>-Based Probiotic for the Control of Necrotic enteritis in Broilers

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Food and Nutrition Sciences 2013年第11期4卷 1-7页

作者： Sherryll Lynn Layton Xochitl Hernandez-Velasco Shivaramaiah Chaitanya Jorge Xavier Anita Menconi Juan David Latorre Gopala Kallapura Vivek Ayamchirakkunnel Kuttappan Ross elderon Wolfenden Raphael Lucio Andreatti Filho Billy Marshal Hargis Guillermo Téllez departamento de Medicina y zootecnia de Aves Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autónoma de México México City México department of Poultry Science University of Arkansas Fayetteville USA department of Poultry Science University of Arkansas Fayetteville USA Vetanco Argentina S.A. Chile 33 (B1603CMA) Vicente López Buenos Aires Argentina department of Veterinary Clinics FMVZ UNESP Campus Botucatu Brazil. Pacific Vet Group-USA Inc. Creek View Drive Fayetteville USA Vetanco Argentina S.A. Chile 33 (B1603CMA) Vicente López Buenos Aires Argentina

Necrotic enteritis (Ne) caused by Clostridium perfringens (CP) in poultry is probably the most important bacterial disease in terms of economic implications. The disease is multi-factorial and is invariably associated with predisposing factors. The present study investigated the effect of a commercially available Lactobacillus-based probiotic (FM-B11) for the control of necrotic enteritis in broiler chickens. In experiment 1, one-day-of-hatch broiler chicks were randomly allocated to the following treatment groups: 1) Non-challenged (NC);2) Challenged (C);3) Challenged + probiotic (C+ FM-B11). Prior to placement, chicks in groups 2 and 3 received 0.25 mL of Salmonella typhimurium (ST) containing 105 cfu of viable cells by oral gavage. At 14, 15 and 16 days of age, all chicks in group 3 were treated with FM-B11 in the drinking water at a concentration of 106 cfu/ml. At 21d of age, all chicks in groups 2 and 3, were individually challenged with 5 × 104 sporulated oocysts of e. maxima by oral gavage. At 26d of age, all chicks in groups 2 and 3, were individually challenged with 108 cfu CP;body weight (BW) was recorded prior to challenge. The experiment was terminated at 29 days of age and the following parameters were evaluated: Ne-associated mortality, CP lesion scores, CP concentrations in ileum, BW, and body weight gain (BWG). Chicks treated with FM-B11 had significantly (P er body weight gain after challenge when compared to control challenge chickens. Total mortality was higher in the C group (48.8%) when compared to the C + FM-B11 (12.7%). even though there was no significant (P > 0.05) difference in lesion score between C and C + FM-B11, group C + FM-B11 had significantly (P er total number of cfu of CP recovered from the ileal mucosa and content samples when compared to group C. experiment 2 was a unique and remarkable case report of a field outbreak of Ne in a commercial broiler farm in Argentina. A reduction and control of the mortality

关键词： Lactobacillus Necrotic enteritis Salmonella Coccidiosis Probiotic

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