Pathogenicity of Actinobacillus minor, Actinobacillus indolicus and Actinobacillus porcinus strains for gnotobiotic piglets

Journal of Veterinary Medicine. B, Infectious Diseases and Veterinary Public Health
K ChiersR Ducatelle

Abstract

The purpose of the study was to evaluate the clinical significance of Actinobacillus minor, Actinobacillus porcinus and Actinobacillus indolicus strains in gnotobiotic piglets. Twenty-two 6-h-old Caesarean-delivered and colostrum-deprived piglets were intranasally and orally inoculated with 2 x 10(6) colony-forming units of an A. minor (group 2; n = 9), A. indolicus (group 3; n = 5), or A. porcinus (group 4; n = 8) strain. Six other piglets were inoculated in the same way with phosphate-buffered saline solution and used as controls (group 1). All pigs were observed for clinical signs and rectal temperatures were taken until euthanasia 7 days after inoculation. At necropsy, conchae, tonsils, lungs, brains, liver, spleen and kidneys were macroscopically examined for lesions and samples were taken for bacteriology. None of the pigs developed fever. Mild ataxia was observed in one pig from group 3 for 2 days. Clinical signs were not observed in the other animals. In none of the animals were macroscopic lesions detected at necropsy. NAD-dependent Pasteurellaceae were not isolated from control animals (group 1). The A. minor, A. indolicus and A. porcinus strains were isolated from the tonsils of one, two and one pigs, respectively. A...Continue Reading

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Citations

Aug 3, 2012·Animal Health Research Reviews·Shaun KernaghanJanet I MacInnes
Jun 6, 2006·Applied and Environmental Microbiology·A OlveraV Aragon
Oct 28, 2008·Molecular and Cellular Probes·Luis E Serrano-RubioMireya de la Garza
Dec 19, 2006·The Veterinary Journal·Alex OlveraVirginia Aragón
Jul 1, 2008·International Journal of Food Microbiology·Pawel JanczykPaolo Bosi
May 11, 2019·PloS One·Khuram NaveedNaveed Ur Rehman
May 18, 2020·International Journal of Systematic and Evolutionary Microbiology·Conny TurniHenrik Christensen
Oct 11, 2017·Journal of Animal Physiology and Animal Nutrition·B MorissetteM Lessard
Mar 23, 2021·Australian Veterinary Journal·C TurniT S Barnes

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