An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , |
Tipo de documento: | Artigo de conferência |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/33622 |
Resumo: | Colostrogensis can be affected by climatic conditions, especially in high environmental conditions. The detrimental effect of heat stress on colostrum composition and volume is well known. Well-conceived climatization systems in the barn can help reduce heat stress, like evaporative cooling. We aimed to study the seasonal variation of colostrum’s total solids concentration of dairy cows housed with an evaporative cooling system. In this study, the Brix of 647 colostrum samples was measured between January to September 2020 on a dairy farm in Alentejo, Portugal. Dry cows were kept in the pasture from day 220 until day 259 of gestation. Then, cows were moved to a barn equipped with an evaporative cooling system until calving (approximately 21 days). The evaporative cooling system consisted of fans and sprinklers activated according to THI threshold. The minimum, maximum and mean THI registered outside were 48.20, 79.04 and 68.38. THI values recorded during summer can indicate moderated heat stress (> 72 THI). Brix values ranged from 11.00 to 42.00%, with a mean value of 24.91%. In this study, we found no association between THI and Brix (P=0.150), indicating the possible effect of the evaporative cooling system in maintaining the colostrum quality throughout the months in all seasons |
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An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling systemcolostrumheat stressbrixevaporative cooling systemautomatedColostrogensis can be affected by climatic conditions, especially in high environmental conditions. The detrimental effect of heat stress on colostrum composition and volume is well known. Well-conceived climatization systems in the barn can help reduce heat stress, like evaporative cooling. We aimed to study the seasonal variation of colostrum’s total solids concentration of dairy cows housed with an evaporative cooling system. In this study, the Brix of 647 colostrum samples was measured between January to September 2020 on a dairy farm in Alentejo, Portugal. Dry cows were kept in the pasture from day 220 until day 259 of gestation. Then, cows were moved to a barn equipped with an evaporative cooling system until calving (approximately 21 days). The evaporative cooling system consisted of fans and sprinklers activated according to THI threshold. The minimum, maximum and mean THI registered outside were 48.20, 79.04 and 68.38. THI values recorded during summer can indicate moderated heat stress (> 72 THI). Brix values ranged from 11.00 to 42.00%, with a mean value of 24.91%. In this study, we found no association between THI and Brix (P=0.150), indicating the possible effect of the evaporative cooling system in maintaining the colostrum quality throughout the months in all seasonsULPGC2023-01-24T17:18:50Z2023-01-242022-12-16T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/33622http://hdl.handle.net/10174/33622porCastelo Branco, AM, Silva, F.G., Conceição, C., Pereira, A., 2022. An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system. International Scientific Meeting on Colostrum, de 16 a 18 de novembro de 2022. Livro de resumos, pág 59.simnaonaomafalda.cccb@gmail.comfsilva@uevora.ptcristinaconceicao@uevora.ptapereira@uevora.ptCastelo-Branco, MafaladaSilva, FlávioConceição, CristinaPereira, Alfredoinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:35:29Zoai:dspace.uevora.pt:10174/33622Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:22:21.651299Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system |
title |
An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system |
spellingShingle |
An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system Castelo-Branco, Mafalada colostrum heat stress brix evaporative cooling system automated |
title_short |
An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system |
title_full |
An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system |
title_fullStr |
An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system |
title_full_unstemmed |
An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system |
title_sort |
An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system |
author |
Castelo-Branco, Mafalada |
author_facet |
Castelo-Branco, Mafalada Silva, Flávio Conceição, Cristina Pereira, Alfredo |
author_role |
author |
author2 |
Silva, Flávio Conceição, Cristina Pereira, Alfredo |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Castelo-Branco, Mafalada Silva, Flávio Conceição, Cristina Pereira, Alfredo |
dc.subject.por.fl_str_mv |
colostrum heat stress brix evaporative cooling system automated |
topic |
colostrum heat stress brix evaporative cooling system automated |
description |
Colostrogensis can be affected by climatic conditions, especially in high environmental conditions. The detrimental effect of heat stress on colostrum composition and volume is well known. Well-conceived climatization systems in the barn can help reduce heat stress, like evaporative cooling. We aimed to study the seasonal variation of colostrum’s total solids concentration of dairy cows housed with an evaporative cooling system. In this study, the Brix of 647 colostrum samples was measured between January to September 2020 on a dairy farm in Alentejo, Portugal. Dry cows were kept in the pasture from day 220 until day 259 of gestation. Then, cows were moved to a barn equipped with an evaporative cooling system until calving (approximately 21 days). The evaporative cooling system consisted of fans and sprinklers activated according to THI threshold. The minimum, maximum and mean THI registered outside were 48.20, 79.04 and 68.38. THI values recorded during summer can indicate moderated heat stress (> 72 THI). Brix values ranged from 11.00 to 42.00%, with a mean value of 24.91%. In this study, we found no association between THI and Brix (P=0.150), indicating the possible effect of the evaporative cooling system in maintaining the colostrum quality throughout the months in all seasons |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-12-16T00:00:00Z 2023-01-24T17:18:50Z 2023-01-24 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/33622 http://hdl.handle.net/10174/33622 |
url |
http://hdl.handle.net/10174/33622 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Castelo Branco, AM, Silva, F.G., Conceição, C., Pereira, A., 2022. An observational study in the seasonal variation of colostrum’ total solids concentration of dairy cows housed with an evaporative cooling system. International Scientific Meeting on Colostrum, de 16 a 18 de novembro de 2022. Livro de resumos, pág 59. sim nao nao mafalda.cccb@gmail.com fsilva@uevora.pt cristinaconceicao@uevora.pt apereira@uevora.pt |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
ULPGC |
publisher.none.fl_str_mv |
ULPGC |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136705522958336 |