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Data de Publicação: | 2007 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Biotemas (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/biotemas/article/view/20622 |
Resumo: | Stress and recognition of humans in weanling piglets. This study was aimed at investigating whether after weaning, piglets recognize persons that have handled them aversively during the lactation period, and whether such treatment intensifi es the stress of weaning. Before weaning, five litters received aversive handling treatment involving an aggressive and intimidating voice; six litters were treated conventionally. After weaning, the piglets’ behavior was compared in a series of tests. Compared to day 10 after weaning, in the fi rst two days after weaning higher frequencies of escape attempts, vocalizations, and standing and sitting, accompanied by a lower frequency of feeding (p<0.05), were observed in both treatments. The piglets handled aversively showed a higher frequency of escape attempts, walking, and interaction with other piglets (p<0.05). In a test carried out individually with the piglets of the aversive treatment, an unknown experimenter was able to approach the piglets closer than the aversive experimenter (p<0.001). In a further test, only 36% of the piglets handled aversively approached the aversive experimenter spontaneously. In contrast, 61% approached the unknown experimenter spontaneously (p < 0.02). In conclusion, at four to five weeks of age piglets can recognize a person that has handled them aversively during the lactation period. The behavior of piglets at weaning indicates that this management is a signifi cant source of stress and that aversive handling treatment during lactation increases this effect. |
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.Estresse e reconhecimento de seres humanos em leitões recém desmamados.Stress and recognition of humans in weanling piglets. This study was aimed at investigating whether after weaning, piglets recognize persons that have handled them aversively during the lactation period, and whether such treatment intensifi es the stress of weaning. Before weaning, five litters received aversive handling treatment involving an aggressive and intimidating voice; six litters were treated conventionally. After weaning, the piglets’ behavior was compared in a series of tests. Compared to day 10 after weaning, in the fi rst two days after weaning higher frequencies of escape attempts, vocalizations, and standing and sitting, accompanied by a lower frequency of feeding (p<0.05), were observed in both treatments. The piglets handled aversively showed a higher frequency of escape attempts, walking, and interaction with other piglets (p<0.05). In a test carried out individually with the piglets of the aversive treatment, an unknown experimenter was able to approach the piglets closer than the aversive experimenter (p<0.001). In a further test, only 36% of the piglets handled aversively approached the aversive experimenter spontaneously. In contrast, 61% approached the unknown experimenter spontaneously (p < 0.02). In conclusion, at four to five weeks of age piglets can recognize a person that has handled them aversively during the lactation period. The behavior of piglets at weaning indicates that this management is a signifi cant source of stress and that aversive handling treatment during lactation increases this effect.Este estudo visou investigar se, logo após o desmame, leitões reconhecem uma pessoa que os tratou aversivamente durante o período de lactação, e se esse tratamento agrava o estresse do desmame. Antes do desmame, 43 leitões de cinco leitegadas receberam um tratamento aversivo, relacionado com um tom de voz agressivo e ameaçador; 44 leitões de seis leitegadas foram tratados convencionalmente. Nos primeiros dois dias após o desmame uma maior freqüência de vocalizações e dos comportamentos de tentativas de fuga da baia, em pé e sentado, e uma menor freqüência de alimentação, do que no 10º dia (p<0,05) foram observados nos dois tratamentos. Os leitões tratados aversivamente apresentaram maior freqüência de tentativas de fuga, andando e interagindo com outros leitões (p<0,05). Em um teste realizado individualmente, os leitões tratados aversivamente aceitaram mais a aproximação de um experimentador desconhecido do que de um experimentador aversivo (p<0,001). Em outro teste, 61% dos leitões tratados aversivamente se aproximaram espontaneamente do experimentador desconhecido, e somente 36% do experimentador aversivo (p<0,02). Conclui-se que leitões de quatro a cinco semanas de vida podem reconhecer uma pessoa que lhes impõe um tratamento aversivo durante o período de lactação. O comportamento dos leitões no desmame indica que o mesmo é uma importante fonte de estresse e que um manejo aversivo durante a lactação exacerba esse efeito.Universidade Federal de Santa Catarina2007-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/biotemas/article/view/20622Biotemas; v. 20 n. 4 (2007); 91-982175-79250103-1643reponame:Biotemas (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCporhttps://periodicos.ufsc.br/index.php/biotemas/article/view/20622/18799Copyright (c) 2007 Maria José Hotzel, Gisele Pacheco de Souza, Luiz Carlos Pinheiro Machado Filho, Renato Irgang, Ricardo Probsthttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessHotzel, Maria JoséSouza, Gisele Pacheco deMachado Filho, Luiz Carlos PinheiroIrgang, RenatoProbst, Ricardo2022-11-21T12:29:26Zoai:periodicos.ufsc.br:article/20622Revistahttp://www.biotemas.ufsc.br/index.htmPUBhttps://periodicos.ufsc.br/index.php/biotemas/oai||carlospinto@ccb.ufsc.br2175-79250103-1643opendoar:2022-11-21T12:29:26Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
. Estresse e reconhecimento de seres humanos em leitões recém desmamados. |
title |
. |
spellingShingle |
. Hotzel, Maria José |
title_short |
. |
title_full |
. |
title_fullStr |
. |
title_full_unstemmed |
. |
title_sort |
. |
author |
Hotzel, Maria José |
author_facet |
Hotzel, Maria José Souza, Gisele Pacheco de Machado Filho, Luiz Carlos Pinheiro Irgang, Renato Probst, Ricardo |
author_role |
author |
author2 |
Souza, Gisele Pacheco de Machado Filho, Luiz Carlos Pinheiro Irgang, Renato Probst, Ricardo |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Hotzel, Maria José Souza, Gisele Pacheco de Machado Filho, Luiz Carlos Pinheiro Irgang, Renato Probst, Ricardo |
description |
Stress and recognition of humans in weanling piglets. This study was aimed at investigating whether after weaning, piglets recognize persons that have handled them aversively during the lactation period, and whether such treatment intensifi es the stress of weaning. Before weaning, five litters received aversive handling treatment involving an aggressive and intimidating voice; six litters were treated conventionally. After weaning, the piglets’ behavior was compared in a series of tests. Compared to day 10 after weaning, in the fi rst two days after weaning higher frequencies of escape attempts, vocalizations, and standing and sitting, accompanied by a lower frequency of feeding (p<0.05), were observed in both treatments. The piglets handled aversively showed a higher frequency of escape attempts, walking, and interaction with other piglets (p<0.05). In a test carried out individually with the piglets of the aversive treatment, an unknown experimenter was able to approach the piglets closer than the aversive experimenter (p<0.001). In a further test, only 36% of the piglets handled aversively approached the aversive experimenter spontaneously. In contrast, 61% approached the unknown experimenter spontaneously (p < 0.02). In conclusion, at four to five weeks of age piglets can recognize a person that has handled them aversively during the lactation period. The behavior of piglets at weaning indicates that this management is a signifi cant source of stress and that aversive handling treatment during lactation increases this effect. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/20622 |
url |
https://periodicos.ufsc.br/index.php/biotemas/article/view/20622 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/20622/18799 |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina |
publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina |
dc.source.none.fl_str_mv |
Biotemas; v. 20 n. 4 (2007); 91-98 2175-7925 0103-1643 reponame:Biotemas (Online) instname:Universidade Federal de Santa Catarina (UFSC) instacron:UFSC |
instname_str |
Universidade Federal de Santa Catarina (UFSC) |
instacron_str |
UFSC |
institution |
UFSC |
reponame_str |
Biotemas (Online) |
collection |
Biotemas (Online) |
repository.name.fl_str_mv |
Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC) |
repository.mail.fl_str_mv |
||carlospinto@ccb.ufsc.br |
_version_ |
1799940550029213696 |