The effects of high environmental temperatures and night feeding on performance of dairy cows.
Autor(a) principal: | |
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Data de Publicação: | 1995 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/3804 |
Resumo: | The objectives included in his title were studied in two trials. In Trial 1, Dry Matter Intake (DMI) was determined in two groups of cows (3 animals in each group) in which one had free aces to water and food (pasture) during 24 h of day. The second group was kept indoors between the afternoon and morning milkings without food and water. DMI of cows at pasture was determined by the use of Cr2O3 as a marker following the technique proposed by Le Du and Penning (1982). Cows with free access to food during 24 hours of the trial had a DMI of 12.8 kg/day. In Trial 2 the animals were treated the same way as trial 1 (with or without food at night). In this trial cows were not only on pasture. All animals received 4 kg of concentrate per day. Milk yield of the two groups of cows (8 per group) was recorded. Cows with free access to food during the 24 hours of the day produced 20.9 kg of milk per day. The ones without food at night produced 17.6 kg of milk per day. Differences were significantly different (p<0.01). During the period in which these trials took place the average maximum and minimum temperature were 31.5 and 14 ºC respectively. |
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The effects of high environmental temperatures and night feeding on performance of dairy cows.high temperaturesnight feedingmilk productiondairy cowsThe objectives included in his title were studied in two trials. In Trial 1, Dry Matter Intake (DMI) was determined in two groups of cows (3 animals in each group) in which one had free aces to water and food (pasture) during 24 h of day. The second group was kept indoors between the afternoon and morning milkings without food and water. DMI of cows at pasture was determined by the use of Cr2O3 as a marker following the technique proposed by Le Du and Penning (1982). Cows with free access to food during 24 hours of the trial had a DMI of 12.8 kg/day. In Trial 2 the animals were treated the same way as trial 1 (with or without food at night). In this trial cows were not only on pasture. All animals received 4 kg of concentrate per day. Milk yield of the two groups of cows (8 per group) was recorded. Cows with free access to food during the 24 hours of the day produced 20.9 kg of milk per day. The ones without food at night produced 17.6 kg of milk per day. Differences were significantly different (p<0.01). During the period in which these trials took place the average maximum and minimum temperature were 31.5 and 14 ºC respectively.EAAP / Wageningen Pers2012-01-18T17:18:36Z2012-01-181995-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/3804http://hdl.handle.net/10174/3804engSantos, Paulo Augusto; Martins, J.M.; Nunes, A. Figueiredo. The effects of high environmental temperatures and night feeding on performance of dairy cows. Trabalho apresentado em Animal Production and Rural Tourism in Mediterranean Regions. In Proceedings of the international symposium on animal production and rural tourism in Mediterranean regions, Vale de Santarém, 1995.90-74134-31-90071-2477ICAAMndjmartins@uevora.ptnd207Santos, Paulo AugustoMartins, J.M.Nunes, A. Figueiredoinfo: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:RCAAP2024-01-03T18:40:36Zoai:dspace.uevora.pt:10174/3804Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:58:52.630132Repositório 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 |
The effects of high environmental temperatures and night feeding on performance of dairy cows. |
title |
The effects of high environmental temperatures and night feeding on performance of dairy cows. |
spellingShingle |
The effects of high environmental temperatures and night feeding on performance of dairy cows. Santos, Paulo Augusto high temperatures night feeding milk production dairy cows |
title_short |
The effects of high environmental temperatures and night feeding on performance of dairy cows. |
title_full |
The effects of high environmental temperatures and night feeding on performance of dairy cows. |
title_fullStr |
The effects of high environmental temperatures and night feeding on performance of dairy cows. |
title_full_unstemmed |
The effects of high environmental temperatures and night feeding on performance of dairy cows. |
title_sort |
The effects of high environmental temperatures and night feeding on performance of dairy cows. |
author |
Santos, Paulo Augusto |
author_facet |
Santos, Paulo Augusto Martins, J.M. Nunes, A. Figueiredo |
author_role |
author |
author2 |
Martins, J.M. Nunes, A. Figueiredo |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Santos, Paulo Augusto Martins, J.M. Nunes, A. Figueiredo |
dc.subject.por.fl_str_mv |
high temperatures night feeding milk production dairy cows |
topic |
high temperatures night feeding milk production dairy cows |
description |
The objectives included in his title were studied in two trials. In Trial 1, Dry Matter Intake (DMI) was determined in two groups of cows (3 animals in each group) in which one had free aces to water and food (pasture) during 24 h of day. The second group was kept indoors between the afternoon and morning milkings without food and water. DMI of cows at pasture was determined by the use of Cr2O3 as a marker following the technique proposed by Le Du and Penning (1982). Cows with free access to food during 24 hours of the trial had a DMI of 12.8 kg/day. In Trial 2 the animals were treated the same way as trial 1 (with or without food at night). In this trial cows were not only on pasture. All animals received 4 kg of concentrate per day. Milk yield of the two groups of cows (8 per group) was recorded. Cows with free access to food during the 24 hours of the day produced 20.9 kg of milk per day. The ones without food at night produced 17.6 kg of milk per day. Differences were significantly different (p<0.01). During the period in which these trials took place the average maximum and minimum temperature were 31.5 and 14 ºC respectively. |
publishDate |
1995 |
dc.date.none.fl_str_mv |
1995-01-01T00:00:00Z 2012-01-18T17:18:36Z 2012-01-18 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/3804 http://hdl.handle.net/10174/3804 |
url |
http://hdl.handle.net/10174/3804 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Santos, Paulo Augusto; Martins, J.M.; Nunes, A. Figueiredo. The effects of high environmental temperatures and night feeding on performance of dairy cows. Trabalho apresentado em Animal Production and Rural Tourism in Mediterranean Regions. In Proceedings of the international symposium on animal production and rural tourism in Mediterranean regions, Vale de Santarém, 1995. 90-74134-31-9 0071-2477 ICAAM nd jmartins@uevora.pt nd 207 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
EAAP / Wageningen Pers |
publisher.none.fl_str_mv |
EAAP / Wageningen Pers |
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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1799136471639130112 |