Effect of natural and mechanical ventilation on performance of lactation sows
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/5218 |
Resumo: | Air movement has been shown to influence performance of confined swine, and that appropriate air flow is fundamental to better animal comfort, and to minimize sanitary problems. The effect of window with and without aeolic exhaustion and mechanical ventilation designed only for hot season was evaluated at Concordia, SC, Brazil, during 1991/92. Although effect of season (P < 0.05) had been observed on environment that was not the case on animal performance (P > 0.05). The hot season environment was stressing for animals, due to higher environment temperature (Ti) ( > 22.0°C), low air velocity (Vi) (< 0.2 m/s), reduced feed intake (CR) (< 4.3 kg/day), as well as increased weaning estrus interval (IDC) (> 13 days) during the hot season as compared to cold season: Ti (< 19.0°C), Vi (< 0.1 m/s), CR (< 4.57 kg/day) and IDC (< 7 days), respectively. In conclusion, ventilation systems based only on natural openings are sufficient for cold season, but are not for hot season due to increase in the ventilation needs. |
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Effect of natural and mechanical ventilation on performance of lactation sowsEfeito da ventilação natural e mecânica sobre o desempenho de porcas em lactaçãothermal comfort; farrowing housing; opening formsconforto térmico; maternidade; sistemas de ventilação; tipos de fechamentoAir movement has been shown to influence performance of confined swine, and that appropriate air flow is fundamental to better animal comfort, and to minimize sanitary problems. The effect of window with and without aeolic exhaustion and mechanical ventilation designed only for hot season was evaluated at Concordia, SC, Brazil, during 1991/92. Although effect of season (P < 0.05) had been observed on environment that was not the case on animal performance (P > 0.05). The hot season environment was stressing for animals, due to higher environment temperature (Ti) ( > 22.0°C), low air velocity (Vi) (< 0.2 m/s), reduced feed intake (CR) (< 4.3 kg/day), as well as increased weaning estrus interval (IDC) (> 13 days) during the hot season as compared to cold season: Ti (< 19.0°C), Vi (< 0.1 m/s), CR (< 4.57 kg/day) and IDC (< 7 days), respectively. In conclusion, ventilation systems based only on natural openings are sufficient for cold season, but are not for hot season due to increase in the ventilation needs. O controle efetivo da ventilação é fundamental para maximizar o bem-estar, o desempenho e a saúde dos suínos. Este trabalho avaliou o efeito de sistemas de ventilação natural através de janelas basculantes (com e sem exaustor eólico) e mecânica, dimensionados para a retirada da carga térmica incidente, nas condições de verão, sobre o condicionamento ambiental e desempenho de porcas em lactação, em Concórdia, SC, no período de 1991/92. Embora tenha sido observado efeito da estação do ano (P < 0,05) sobre as variáveis ambientais, não houve alterações significativas na resposta animal (P > 0,05). O condicionamento térmico no verão foi considerado estressante em todos os sistemas, com temperaturas (Ti) elevadas (> 22,0°C), taxas de ventilação (Vi) deficientes (< 0,2 m/s), baixo consumo alimentar (CR) (13 dias), em comparação com as observadas no inverno: Ti ( < 19,0°C), Vi ( < 0,1 m/s), CR ( < 4,57 kg/dia) e IDC ( < 7 dias), respectivamente. Concluiu-se que sistemas de ventilação dimensionados apenas para a retirada da carga térmica incidente (radiação solar, calor animal e fontes internas de aquecimento) são viáveis para o inverno, mas resultam em desconforto térmico no verão, em face da maior exigência de ventilação.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPerdomo, Carlos ClaudioFernandes, Luís Carlos de OliveiraGuidoni, Antônio LourençoFialho, Flavio Bello1999-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5218Pesquisa Agropecuaria Brasileira; v.34, n.4, abr. 1999; 691-699Pesquisa Agropecuária Brasileira; v.34, n.4, abr. 1999; 691-6991678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5218/2410info:eu-repo/semantics/openAccess2010-07-06T13:18:17Zoai:ojs.seer.sct.embrapa.br:article/5218Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-07-06T13:18:17Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effect of natural and mechanical ventilation on performance of lactation sows Efeito da ventilação natural e mecânica sobre o desempenho de porcas em lactação |
title |
Effect of natural and mechanical ventilation on performance of lactation sows |
spellingShingle |
Effect of natural and mechanical ventilation on performance of lactation sows Perdomo, Carlos Claudio thermal comfort; farrowing housing; opening forms conforto térmico; maternidade; sistemas de ventilação; tipos de fechamento |
title_short |
Effect of natural and mechanical ventilation on performance of lactation sows |
title_full |
Effect of natural and mechanical ventilation on performance of lactation sows |
title_fullStr |
Effect of natural and mechanical ventilation on performance of lactation sows |
title_full_unstemmed |
Effect of natural and mechanical ventilation on performance of lactation sows |
title_sort |
Effect of natural and mechanical ventilation on performance of lactation sows |
author |
Perdomo, Carlos Claudio |
author_facet |
Perdomo, Carlos Claudio Fernandes, Luís Carlos de Oliveira Guidoni, Antônio Lourenço Fialho, Flavio Bello |
author_role |
author |
author2 |
Fernandes, Luís Carlos de Oliveira Guidoni, Antônio Lourenço Fialho, Flavio Bello |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Perdomo, Carlos Claudio Fernandes, Luís Carlos de Oliveira Guidoni, Antônio Lourenço Fialho, Flavio Bello |
dc.subject.por.fl_str_mv |
thermal comfort; farrowing housing; opening forms conforto térmico; maternidade; sistemas de ventilação; tipos de fechamento |
topic |
thermal comfort; farrowing housing; opening forms conforto térmico; maternidade; sistemas de ventilação; tipos de fechamento |
description |
Air movement has been shown to influence performance of confined swine, and that appropriate air flow is fundamental to better animal comfort, and to minimize sanitary problems. The effect of window with and without aeolic exhaustion and mechanical ventilation designed only for hot season was evaluated at Concordia, SC, Brazil, during 1991/92. Although effect of season (P < 0.05) had been observed on environment that was not the case on animal performance (P > 0.05). The hot season environment was stressing for animals, due to higher environment temperature (Ti) ( > 22.0°C), low air velocity (Vi) (< 0.2 m/s), reduced feed intake (CR) (< 4.3 kg/day), as well as increased weaning estrus interval (IDC) (> 13 days) during the hot season as compared to cold season: Ti (< 19.0°C), Vi (< 0.1 m/s), CR (< 4.57 kg/day) and IDC (< 7 days), respectively. In conclusion, ventilation systems based only on natural openings are sufficient for cold season, but are not for hot season due to increase in the ventilation needs. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-04-01 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/5218 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5218 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/5218/2410 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.34, n.4, abr. 1999; 691-699 Pesquisa Agropecuária Brasileira; v.34, n.4, abr. 1999; 691-699 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416681661399040 |