{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T12:54:59Z","timestamp":1791204899863,"version":"4.1.0"},"reference-count":60,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T00:00:00Z","timestamp":1785283200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T00:00:00Z","timestamp":1785283200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Veterinary Medicine &amp;amp; Sci"],"published-print":{"date-parts":[[2026,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>\n                      Vertically integrated broiler production systems enable efficient poultry production but may facilitate the dissemination of\n                      <jats:italic>Salmonella<\/jats:italic>\n                      throughout the production chain.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>\n                      This study investigated the prevalence and characteristics of\n                      <jats:italic>Salmonella<\/jats:italic>\n                      at each stage of the production process of three major integrated broiler operations in Korea.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      From 2022 to 2024, samples were collected from breeder hatcheries, broiler breeder farms, commercial broiler hatcheries and commercial broiler farms of three major integrated broiler operations in Korea.\n                      <jats:italic>Salmonella<\/jats:italic>\n                      isolates were characterized by serotyping, antimicrobial susceptibility testing, virulence gene profiling, pESI\u2010like plasmid detection, and pulsed\u2010field gel electrophoresis (PFGE).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The prevalence of\n                      <jats:italic>Salmonella<\/jats:italic>\n                      was higher in commercial hatcheries (30.0%\u201345.0%) and commercial farms (17.6%\u201362.7%) than in breeder hatcheries (10.0%\u201330.0%) and breeder farms (3.3%\u201313.4%). In breeder and commercial farms, the prevalence increased during the rearing period. Seven\n                      <jats:italic>Salmonella<\/jats:italic>\n                      serovars were identified, and the predominant serovar was\n                      <jats:italic>S<\/jats:italic>\n                      . Infantis (22.2%). Interestingly,\n                      <jats:italic>S<\/jats:italic>\n                      . Infantis exhibited multidrug resistance in 96.8% of isolates and carried the pESI\u2010like plasmid in 97.6% of isolates. Among the 20 virulence genes tested, several genes were widely distributed among isolates, whereas\n                      <jats:italic>sefA<\/jats:italic>\n                      ,\n                      <jats:italic>sefC<\/jats:italic>\n                      and\n                      <jats:italic>spvC<\/jats:italic>\n                      were exclusively detected in\n                      <jats:italic>S<\/jats:italic>\n                      . Enteritidis. In PFGE analysis, identical pulsotypes of\n                      <jats:italic>S<\/jats:italic>\n                      . Enteritidis and\n                      <jats:italic>S<\/jats:italic>\n                      . Infantis were found to be transmitted vertically from breeder hatcheries to commercial farms by operation.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      These findings demonstrate that\n                      <jats:italic>Salmonella<\/jats:italic>\n                      is transmitted downstream throughout the production process, and therefore, critical strategies, including rigorous biosecurity, hygiene and monitoring across the entire production chain, are required to control\n                      <jats:italic>Salmonella<\/jats:italic>\n                      .\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/vms3.71103","type":"journal-article","created":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T16:10:33Z","timestamp":1785341433000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Prevalence and Characteristics of\n                    <i>Salmonella<\/i>\n                    spp. by Production Stage in Integrated Broiler Operations in Korea"],"prefix":"10.1002","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-9427-3636","authenticated-orcid":false,"given":"Hyeong Jeong","family":"Choi","sequence":"first","affiliation":[{"name":"College of Veterinary Medicine &amp; Institute for Veterinary Biomedical Science Kyungpook National University  Daegu Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6108-2845","authenticated-orcid":false,"given":"Young Ju","family":"Lee","sequence":"additional","affiliation":[{"name":"College of Veterinary Medicine &amp; Institute for Veterinary Biomedical Science Kyungpook National University  Daegu Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,29]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1099\/mgen.0.000365"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1080\/03079457.2012.718071"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1080\/03079450802216561"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1093\/jambio\/lxaf040"},{"issue":"2","key":"e_1_2_10_6_1","first-page":"159","article-title":"Pesquisa de genes de virul\u00eancia em Salmonella Hadar em amostras provenientes de material av\u00edcola","volume":"6","author":"Cesco M. 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