Effect of parity segregation on Mycoplasma hyopneumoniae infection dynamics and pneumonic lesions in pigs
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Outros Autores: | , , , , |
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. |
id |
UFSM-2_c856b94b215079037e4560d6068fa344 |
---|---|
oai_identifier_str |
oai:scielo:S0103-84782022000200452 |
network_acronym_str |
UFSM-2 |
network_name_str |
Ciência rural (Online) |
repository_id_str |
|
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 |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140556546572288 |