Avian Diseases最新文献

{"title":"Focal Duodenal Necrosis Replication in Layer Chickens Using a Bacterial Mixture in Challenge Experiments","authors":"Yu-Yang Tsai, Julia Ienes-Lima, Klao Runcharoon, Nicole L. Gottdenker, Daniel A. Sebastián Pineda, Catherine M. Logue","doi":"10.1637/aviandiseases-d-24-00069","DOIUrl":"https://doi.org/10.1637/aviandiseases-d-24-00069","url":null,"abstract":"Replicación de la necrosis duodenal focal en gallinas de postura mediante una mezcla bacteriana en experimentos de desafío. La necrosis duodenal focal (con las siglas en inglés FDN) es una enfermedad intestinal en gallinas de postura que causa una disminución en la producción y en el peso del huevo. La etiología de la necrosis duodenal focal es indeterminada, pero se ha relacionado con Clostridium perfringens (CP) y Clostridium colinum (CC) en estudios previos. Recientemente, se descubrió que Escherichia coli (EC), Gallibacterium anatis y Enterococcus spp. también podrían contribuir a la patogénesis de la necrosis duodenal focal. Nuestro modelo de desafío tuvo como objetivo reproducir las lesiones de necrosis duodenal focal en gallinas de postura utilizando diferentes mezclas bacterianas con una dieta especialmente formulada de maíz y soya como factor predisponente. En el Experimento 1, 30 gallinas ponedoras (Hy-line W-36) de 35 semanas de edad se asignaron en cuatro grupos experimentales y un grupo control, y a todas las aves se les suministró la dieta especialmente diseñada. Se utilizó un desafío oral diario con la mezcla bacteriana durante dos semanas y se detuvo en la semana 3. En el Experimento 2, se utilizaron 66 gallinas ponedoras (Hy-line W-36) de 26 semanas de edad, y el experimento se centró en tres grupos de desafío con mezclas compuestas de C. perfringens, C. colinum and E. coli. Además, se incluyeron dos grupos control, en los que las aves fueron alimentadas con el alimento diseñado o con alimento comercial para ponedoras. El desafío oral diario en el Experimento 2 duró tres semanas. Se detectaron focos/manchas rojas, hiperemia mucosa y erosión en las aves desafiadas. El análisis histológico de las lesiones encontró inflamación linfoplasmocítica de leve a moderada y necrosis de las criptas. En general, aunque este estudio no logró reproducir con éxito las lesiones histopatológicas específicas de la necrosis duodenal focal, ciertas mezclas bacterianas destacaron al comparar los cambios macroscópicos y las puntuaciones de las lesiones. Los grupos con C. perfringens + C. colinum y C. perfringens + C. colinum + E. coli mostraron puntuaciones de lesiones significativamente más altas en comparación con el grupo control. Este estudio destacó el papel de algunas bacterias clave en el desarrollo de lesiones y daño al duodeno de las aves afectadas. Para una reproducción exitosa de la necrosis duodenal focal en el futuro, es posible que sea necesario considerar factores adicionales para un modelo exitoso.","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147917590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Endogenous Development and Histopathological Differences Among the Chicken Eimeria: A Review","authors":"K.W. Bafundo, K. McCullough","doi":"10.1637/aviandiseases-d-24-00075","DOIUrl":"https://doi.org/10.1637/aviandiseases-d-24-00075","url":null,"abstract":"Estudio Recapitulativo-Desarrollo endógeno y diferencias histopatológicas entre las especies de Eimeria en pollos: Revisión. Las infecciones por Eimeria se encuentran entre las enfermedades más costosas que afectan la producción comercial de pollos. Para comprender y diagnosticar estas infecciones en un entorno comercial es fundamental el uso de procedimientos histopatológicos. Estos métodos permiten a los profesionales de diagnóstico determinar la gravedad de la infección y reconocer situaciones en las que la salud intestinal y el rendimiento de las aves pueden verse comprometidos. Trabajos recientes muestran que las evaluaciones histopatológicas mejoran la precisión de los métodos estándar de análisis, como la puntuación de las lesiones y la morfología de los ooquistes, y brindan el respaldo necesario para los análisis de PCR. Por lo tanto, el uso de la histopatología en el diagnóstico de las infecciones por Eimeria es cada vez más importante. Dado este hecho y reconociendo que falta una revisión concisa del desarrollo endógeno y la histopatología de Eimeria spp. en pollos, este trabajo proporciona una revisión de las características histopatológicas más destacadas de las siete especies establecidas de Eimeria que parasitan al pollo. También ilustra las fases patológicas de cada ciclo de vida que resultan en pérdidas de rendimiento. Se incluyen comentarios adicionales sobre el conocimiento actual de la histopatología de tres nuevas especies de Eimeria detectadas en pollos.","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147896784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Limitations of the Inter-Unit Reliability: A Set of Practical Examples.","authors":"Nicholas Hartman, Vahakn B Shahinian, Valarie B Ashby, Katrina J Price, Kevin He","doi":"10.1007/s10742-023-00307-0","DOIUrl":"10.1007/s10742-023-00307-0","url":null,"abstract":"<p><p>Healthcare quality measures are statistics that serve to evaluate healthcare providers and identify those that need to improve their care. Before using these measures in clinical practice, developers and reviewers assess measure reliability, which describes the degree to which differences in the measure values reflect actual variation in healthcare quality, as opposed to random noise. The Inter-Unit Reliability (IUR) is a popular statistic for assessing reliability, and it describes the proportion of total variation in a measure that is attributable to between-provider variation. However, Kalbfleisch, He, Xia, and Li (2018) [<i>Health Services and Outcomes Research Methodology</i>, 18, 215-225] have argued that the IUR has a severe limitation in that some of the between-provider variation may be unrelated to quality of care. In this paper, we illustrate the practical implications of this limitation through several concrete examples. We show that certain best-practices in measure development, such as careful risk adjustment and exclusion of unstable measure values, can decrease the sample IUR value. These findings uncover potential negative consequences of discarding measures with IUR values below some arbitrary threshold.</p>","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"26 1 1","pages":"156-169"},"PeriodicalIF":1.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11323040/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90427142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inactivation of Three Subtypes of Influenza A Virus by a Commercial Device Using Ultraviolet Light and Ozone","authors":"N. Sobhy, Angie Quiñonez Muñoz, Christiana R.B. Youssef, Sagar M. Goyal","doi":"10.1637/aviandiseases-d-23-00035","DOIUrl":"https://doi.org/10.1637/aviandiseases-d-23-00035","url":null,"abstract":"","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"556 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vaccines to Control Salmonella in Poultry","authors":"Roy Curtiss","doi":"10.1637/aviandiseases-d-23-99988","DOIUrl":"https://doi.org/10.1637/aviandiseases-d-23-99988","url":null,"abstract":"","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"419 ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Immunological Basis for Vaccination","authors":"S. Rautenschlein, K. Schat","doi":"10.1637/aviandiseases-d-23-99996","DOIUrl":"https://doi.org/10.1637/aviandiseases-d-23-99996","url":null,"abstract":"","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"256 17","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vaccination Against Poultry Parasites","authors":"R. Hauck, Kenneth S. Macklin","doi":"10.1637/aviandiseases-d-23-99989","DOIUrl":"https://doi.org/10.1637/aviandiseases-d-23-99989","url":null,"abstract":"","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"119 2","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139169179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Licensing Requirements for Poultry Veterinary Biologics in the United States","authors":"Joan S. Schrader, Helen E. Smith","doi":"10.1637/aviandiseases-d-23-99993","DOIUrl":"https://doi.org/10.1637/aviandiseases-d-23-99993","url":null,"abstract":"","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"437 ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association Between Escherichia coli Load in the Gut and Body Weight Gain in Broiler Chickens: A Systematic Review and Meta-Analysis","authors":"M. Abdelhamid, Omid Nekouei, Michael Hess, Surya Paudel","doi":"10.1637/aviandiseases-d-23-00034","DOIUrl":"https://doi.org/10.1637/aviandiseases-d-23-00034","url":null,"abstract":"","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"287 3","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138996541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancement of Autogenous Vaccines in the Poultry Industry","authors":"Marshall Putnam, James Mills, M. Markis, J. El-Attrache","doi":"10.1637/aviandiseases-d-23-99990","DOIUrl":"https://doi.org/10.1637/aviandiseases-d-23-99990","url":null,"abstract":"","PeriodicalId":8667,"journal":{"name":"Avian Diseases","volume":"10 7","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139000181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}