Evaluation of different live Salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion, organ colonization, and egg contamination
Salmonellosis caused by Salmonella Enteritidis is a widespread zoonosis and poultry products are an important source of infection. This study was carried out to evaluate the protection of different vaccination schedules in layers using a live commercial attenuated Salmonella Enteritidis vaccine base...
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| Format: | Artículo |
| Language: | Inglés |
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Oxford University Press
2019
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| Online Access: | https://academic.oup.com/ps/article-abstract/98/6/2422/5301425 http://hdl.handle.net/20.500.12123/5466 https://doi.org/10.3382/ps/pez003 |
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| author | Huberman, Yosef Daniel Velilla, Alejandra Vanesa Terzolo, Horacio |
| author_browse | Huberman, Yosef Daniel Terzolo, Horacio Velilla, Alejandra Vanesa |
| author_facet | Huberman, Yosef Daniel Velilla, Alejandra Vanesa Terzolo, Horacio |
| author_sort | Huberman, Yosef Daniel |
| collection | INTA Digital |
| description | Salmonellosis caused by Salmonella Enteritidis is a widespread zoonosis and poultry products are an important source of infection. This study was carried out to evaluate the protection of different vaccination schedules in layers using a live commercial attenuated Salmonella Enteritidis vaccine based on strain Sm24/Rif12/Ssq (AviPro® Salmonella Vac E, ELANCO) during rearing and egg production. Three hundred and fifty Salmonella-free chickens were distributed into 7 vaccinated groups and 1 unvaccinated group. Different vaccination schedules were performed combining either 1, 2, or 3 oral gavage doses. Chickens from Group A, B, and C were vaccinated once, either at the first day, at 7 or 16 wk old, respectively. Chickens from Group D were vaccinated twice—at the first day and 7 wk old. Chickens from Group E were vaccinated twice—at the first day and 16 wk old. Chickens from Group F were vaccinated twice—at 7 and 16 wk old. Chickens from Group G were vaccinated 3 times, following the manufacturer's recommendation: at the first day, 7 and 16 wk old. Chickens from Group H remained unvaccinated. Five challenge trials numbered 1 to 5 were carried out at 8, 12, 16, 29, and 55 wk old, respectively. After challenge, chickens were sampled by cloacal swabbing and, after euthanasia, livers, ovaries, spleens, and cecal contents were cultured to isolate S. Enteritidis. Additionally, eggs were collected after challenge and cultured to isolate S.Enteritidis on egg shells (Trials 4 and 5). Protection against experimental infection with a virulent nalidixic acid resistant S. Enteritidis strain K285/94, was evaluated by measuring reduction of excretion, colonization, invasion into organs, eggshell contamination, and egg production. The live S. Enteritidis vaccine protected the hens by reducing S. Enteritidis excretion, isolation from organs, and egg contamination. Higher protection throughout laying period was afforded after administration of three vaccine doses during rearing period. |
| format | Artículo |
| id | INTA5466 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | INTA54662019-07-10T15:42:13Z Evaluation of different live Salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion, organ colonization, and egg contamination Huberman, Yosef Daniel Velilla, Alejandra Vanesa Terzolo, Horacio Salmonella Enteritidis Gallina Ponedora Salmonelosis Vacuna Layer Chickens Salmonellosis Vaccines Salmonellosis caused by Salmonella Enteritidis is a widespread zoonosis and poultry products are an important source of infection. This study was carried out to evaluate the protection of different vaccination schedules in layers using a live commercial attenuated Salmonella Enteritidis vaccine based on strain Sm24/Rif12/Ssq (AviPro® Salmonella Vac E, ELANCO) during rearing and egg production. Three hundred and fifty Salmonella-free chickens were distributed into 7 vaccinated groups and 1 unvaccinated group. Different vaccination schedules were performed combining either 1, 2, or 3 oral gavage doses. Chickens from Group A, B, and C were vaccinated once, either at the first day, at 7 or 16 wk old, respectively. Chickens from Group D were vaccinated twice—at the first day and 7 wk old. Chickens from Group E were vaccinated twice—at the first day and 16 wk old. Chickens from Group F were vaccinated twice—at 7 and 16 wk old. Chickens from Group G were vaccinated 3 times, following the manufacturer's recommendation: at the first day, 7 and 16 wk old. Chickens from Group H remained unvaccinated. Five challenge trials numbered 1 to 5 were carried out at 8, 12, 16, 29, and 55 wk old, respectively. After challenge, chickens were sampled by cloacal swabbing and, after euthanasia, livers, ovaries, spleens, and cecal contents were cultured to isolate S. Enteritidis. Additionally, eggs were collected after challenge and cultured to isolate S.Enteritidis on egg shells (Trials 4 and 5). Protection against experimental infection with a virulent nalidixic acid resistant S. Enteritidis strain K285/94, was evaluated by measuring reduction of excretion, colonization, invasion into organs, eggshell contamination, and egg production. The live S. Enteritidis vaccine protected the hens by reducing S. Enteritidis excretion, isolation from organs, and egg contamination. Higher protection throughout laying period was afforded after administration of three vaccine doses during rearing period. EEA Balcarce Fil: Huberman, Yosef Daniel. INTA, Estación Experimental Agropecuaria Balcarce, Argentina. Fil: Velilla, Alejandra Vanesa. INTA, Estación Experimental Agropecuaria Balcarce, Argentina. Fil: Terzolo, Horacio Raúl. INTA, Estación Experimental Agropecuaria Balcarce, Argentina. 2019-07-10T15:37:06Z 2019-07-10T15:37:06Z 2019-01-25 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://academic.oup.com/ps/article-abstract/98/6/2422/5301425 http://hdl.handle.net/20.500.12123/5466 0032-5791 1525-3171 https://doi.org/10.3382/ps/pez003 eng info:eu-repo/semantics/restrictedAccess application/pdf Oxford University Press Poultry Science 98 (6) : 2422–2431 (June 2019) |
| spellingShingle | Salmonella Enteritidis Gallina Ponedora Salmonelosis Vacuna Layer Chickens Salmonellosis Vaccines Huberman, Yosef Daniel Velilla, Alejandra Vanesa Terzolo, Horacio Evaluation of different live Salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion, organ colonization, and egg contamination |
| title | Evaluation of different live Salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion, organ colonization, and egg contamination |
| title_full | Evaluation of different live Salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion, organ colonization, and egg contamination |
| title_fullStr | Evaluation of different live Salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion, organ colonization, and egg contamination |
| title_full_unstemmed | Evaluation of different live Salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion, organ colonization, and egg contamination |
| title_short | Evaluation of different live Salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion, organ colonization, and egg contamination |
| title_sort | evaluation of different live salmonella enteritidis vaccine schedules administered during layer hen rearing to reduce excretion organ colonization and egg contamination |
| topic | Salmonella Enteritidis Gallina Ponedora Salmonelosis Vacuna Layer Chickens Salmonellosis Vaccines |
| url | https://academic.oup.com/ps/article-abstract/98/6/2422/5301425 http://hdl.handle.net/20.500.12123/5466 https://doi.org/10.3382/ps/pez003 |
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