Persistence of passive immunity against Actinobacillus pleuropneumoniae in piglets during the growing phase

P. Omar García, E. Sonia Calle, P. Néstor Falcón, A. Marlon Torres, J. Chris Pinto

Research output: Contribution to journalArticlepeer-review

Abstract

© 20010 Universidad Nacional Mayor de San Marcos. All rights reserved. The present study evaluated the persistence of passive immunity in piglets from seropositive sows to Actinobacillus pleuropneumoniae from weaning to the end of the growing phase in a commercial farm in Ica, Peru. Blood samples were collected from 30 piglets at 17, 42, and 73 days of age, which corresponded to weaning, and to mid and final period or the growing phase respectively. Serum was analyzed by an indirect ELISA test that detects antibodies against the ApxIV toxin. All piglets were positive to the presence of maternal antibodies at day 17 of age, whereas 56.7 and 46.7% were positive at 42 and 73 days of age respectively. There was statistical difference between levels of antibodies at days 17 and 42, and 17 and 73 (p<0.05), but not between days 42 and 73. The level of antibodies was low at the end of the growing phase.
Original languageAmerican English
Pages (from-to)119-123
Number of pages5
JournalRevista de Investigaciones Veterinarias del Peru
StatePublished - 1 Jan 2010

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