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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/1585
Title: 
Nose-to-nose transmission of Salmonella Typhimurium between weaned pigs
Author(s): 
Institution: 
  • Universidade Federal da Paraíba (UFPB)
  • Universidade Estadual Paulista (UNESP)
ISSN: 
0378-1135
Abstract: 
Little attention has been paid to the possibility of transmission of Salmonella in intensive pig production systems through alternate methods, such as airborne or direct nose-to-nose contact. This experimental study tested the hypothesis of nose-to-nose transmission of Salmonella enterica serovars Typhimurium (Trial I) and Agona (Trial II) in weaned pigs using stainless steel/ glass isolation cabinets. In each trial, cabinet 1 (control pigs) and cabinet 2 (sentinel pigs) were connected directly to the fan unit. Cabinet 3 (seeded pigs) was not directly linked to the fan, but was arranged to receive a constant unidirectional airflow from cabinet 2 (sentinel pigs) through a 10 cm diameter hole, which also allowed nose-to-nose contact between pigs housed in these two cabinets. Air was taken out of the system through ducts connecting cabinets 1 and 3 to the exhauster. Therefore, direct contact among seeded and sentinel pigs was allowed but possible aerial transference of contaminated particles between those cabinets was prevented. The system was opened 21 days post-inoculation and tissue samples were collected for bacteriological analysis. The recovery of nalidixic acid-resistant Salmonella Typhimurium from sentinel pigs corroborates the hypothesis of nose-to-nose transmission of that pathogen in pigs. However, serovar-related differences might exist regarding the nose-to-nose transmissibility of Salmonella in pigs, since Salmonella Agona was not detected in sentinel pigs (Trial II). Published by Elsevier B.V.
Issue Date: 
15-Dec-2007
Citation: 
Veterinary Microbiology. Amsterdam: Elsevier B.V., v. 125, n. 3-4, p. 355-361, 2007.
Time Duration: 
355-361
Publisher: 
Elsevier B.V.
Keywords: 
  • direct transmission
  • nose-to-nose contact
  • Salmonella epidemiology
  • swine
Source: 
http://dx.doi.org/10.1016/j.vetmic.2007.05.032
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/1585
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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