Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs

Detalhes bibliográficos
Autor(a) principal: Forner,Ricardo Augusto Neves
Data de Publicação: 2022
Outros Autores: Takeuti,Karine Ludwig, Conti,Elisa Rigo De, Santi,Monica, Bortolozzo,Fernando Pandolfo, Barcellos,David Emilio Santos Neves de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência Rural
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782022000200452
Resumo: ABSTRACT: Gilts represent a group risk for Mycoplasma hyopneumoniae vertical transmission in swine herds. Therefore, parity segregation can be an alternative to control M. hyopneumoniae infections. The study evaluated the effect of parity segregation on M. hyopneumoniae infection dynamics and occurrence and severity of lung lesions at slaughter. For that, three multiple site herds were included in the study. Herd A consisted of the farm where gilts would have their first farrowing (parity order (PO) 1). After the first farrowing PO 1 sows were transferred to herd B (PO2-6). Herd C was a conventional herd with gilt replacement (PO1-6). Piglets born in each herd were raised in separated nursery and finishing units. Sows (n = 33 (A), 37 (B), 34 (C)) in all herds were sampled prior to farrowing and piglets (n = 54 (A), 71 (B), 66 (C)) were sampled longitudinally at 21, 63, 100, 140 days of age and at slaughter for M. hyopneumoniae detection by PCR and lung lesions scoring. M. hyopneumoniae prevalence in sows did not differ among herds. Prevalence of positive piglets was higher at weaning in the PO1 herd (A) (P < 0.05). However, prevalence of positive pigs from 100 days of age to slaughter age was higher in the PO2-6 herd (B) (P < 0.05). Lung lesion occurrence and severity were higher in herd B. The authors suggested that the lack of a proper gilt acclimation might have influenced the results, leading to sows being detected positive at farrowing, regardless of the parity.
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spelling Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigsenzootic pneumoniagiltslung lesionsparity ordersow farmABSTRACT: Gilts represent a group risk for Mycoplasma hyopneumoniae vertical transmission in swine herds. Therefore, parity segregation can be an alternative to control M. hyopneumoniae infections. The study evaluated the effect of parity segregation on M. hyopneumoniae infection dynamics and occurrence and severity of lung lesions at slaughter. For that, three multiple site herds were included in the study. Herd A consisted of the farm where gilts would have their first farrowing (parity order (PO) 1). After the first farrowing PO 1 sows were transferred to herd B (PO2-6). Herd C was a conventional herd with gilt replacement (PO1-6). Piglets born in each herd were raised in separated nursery and finishing units. Sows (n = 33 (A), 37 (B), 34 (C)) in all herds were sampled prior to farrowing and piglets (n = 54 (A), 71 (B), 66 (C)) were sampled longitudinally at 21, 63, 100, 140 days of age and at slaughter for M. hyopneumoniae detection by PCR and lung lesions scoring. M. hyopneumoniae prevalence in sows did not differ among herds. Prevalence of positive piglets was higher at weaning in the PO1 herd (A) (P < 0.05). However, prevalence of positive pigs from 100 days of age to slaughter age was higher in the PO2-6 herd (B) (P < 0.05). Lung lesion occurrence and severity were higher in herd B. The authors suggested that the lack of a proper gilt acclimation might have influenced the results, leading to sows being detected positive at farrowing, regardless of the parity.Universidade Federal de Santa Maria2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782022000200452Ciência Rural v.52 n.2 2022reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20210081info:eu-repo/semantics/openAccessForner,Ricardo Augusto NevesTakeuti,Karine LudwigConti,Elisa Rigo DeSanti,MonicaBortolozzo,Fernando PandolfoBarcellos,David Emilio Santos Neves deeng2021-09-22T00:00:00ZRevista
dc.title.none.fl_str_mv Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs
title Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs
spellingShingle Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs
Forner,Ricardo Augusto Neves
enzootic pneumonia
gilts
lung lesions
parity order
sow farm
title_short Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs
title_full Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs
title_fullStr Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs
title_full_unstemmed Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs
title_sort Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs
author Forner,Ricardo Augusto Neves
author_facet Forner,Ricardo Augusto Neves
Takeuti,Karine Ludwig
Conti,Elisa Rigo De
Santi,Monica
Bortolozzo,Fernando Pandolfo
Barcellos,David Emilio Santos Neves de
author_role author
author2 Takeuti,Karine Ludwig
Conti,Elisa Rigo De
Santi,Monica
Bortolozzo,Fernando Pandolfo
Barcellos,David Emilio Santos Neves de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Forner,Ricardo Augusto Neves
Takeuti,Karine Ludwig
Conti,Elisa Rigo De
Santi,Monica
Bortolozzo,Fernando Pandolfo
Barcellos,David Emilio Santos Neves de
dc.subject.por.fl_str_mv enzootic pneumonia
gilts
lung lesions
parity order
sow farm
topic enzootic pneumonia
gilts
lung lesions
parity order
sow farm
description ABSTRACT: Gilts represent a group risk for Mycoplasma hyopneumoniae vertical transmission in swine herds. Therefore, parity segregation can be an alternative to control M. hyopneumoniae infections. The study evaluated the effect of parity segregation on M. hyopneumoniae infection dynamics and occurrence and severity of lung lesions at slaughter. For that, three multiple site herds were included in the study. Herd A consisted of the farm where gilts would have their first farrowing (parity order (PO) 1). After the first farrowing PO 1 sows were transferred to herd B (PO2-6). Herd C was a conventional herd with gilt replacement (PO1-6). Piglets born in each herd were raised in separated nursery and finishing units. Sows (n = 33 (A), 37 (B), 34 (C)) in all herds were sampled prior to farrowing and piglets (n = 54 (A), 71 (B), 66 (C)) were sampled longitudinally at 21, 63, 100, 140 days of age and at slaughter for M. hyopneumoniae detection by PCR and lung lesions scoring. M. hyopneumoniae prevalence in sows did not differ among herds. Prevalence of positive piglets was higher at weaning in the PO1 herd (A) (P < 0.05). However, prevalence of positive pigs from 100 days of age to slaughter age was higher in the PO2-6 herd (B) (P < 0.05). Lung lesion occurrence and severity were higher in herd B. The authors suggested that the lack of a proper gilt acclimation might have influenced the results, leading to sows being detected positive at farrowing, regardless of the parity.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782022000200452
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782022000200452
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0103-8478cr20210081
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Rural v.52 n.2 2022
reponame:Ciência Rural
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Rural
collection Ciência Rural
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repository.mail.fl_str_mv
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