Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porte
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
dARK ID: | ark:/26339/001300000hfq1 |
Texto Completo: | http://repositorio.ufsm.br/handle/1/28454 |
Resumo: | The objective of this study was to evaluate the effect of the body size composite on lactation curve (peak and persistency) and milk production in Holstein cows of first, second and third lactations. A total of 133 cows were used, selected from a herd of 280 cows, classified as small, medium and large based on the body size composite (stature x 10 + strength x 5 + depth x 3 + rump width x 2)/ 20. Data were collected from January 2007 to October 2009 in a commercial herd with intensive system of milk production, located in Salto Jacuí, Rio Grande do Sul, Brazil. Grazing oat and ryegrass, were used to feed the cows from May to October, and Tifton 85 and sorghum from November to April. Each animal received daily food supplement, with 20 kg of corn silage, and 12, 10.5 and 7.5 kg of concentrate (20% crude protein), for lots that produced 37 or more, 22 to 36, and 12 to 21 liters of milk daily per cow, respectively. All cows were subjected to the same conditions of facilities management being used and were milked three times daily. The experimental design was completely randomized with three treatments (body size). There was no interaction between body size composite and yield lactation. Peak milk production was later during the first lactation, but no significant differences were observed between the cows size. High persistency was more in second and third lactation, with increased milk production levels. Means for 305-days milk production in the lactation were 8,992.56; 9,472.33 and 10,015.50 liters for small, medium and large cows, respectively. On the basis of the total lactations, cows of medium size were more efficient than the other cow sizes, for this intensive production system. |
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Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porteLactation curve and milk yield of holstein cows for small, medium and large sizeComposto corporalDimensões corporaisPeso corporalPersistênciaPico de produção de leiteBody dimensionsBody size compositeBody weightPersistencyPeak milk productionCNPQ::CIENCIAS AGRARIAS::ZOOTECNIAThe objective of this study was to evaluate the effect of the body size composite on lactation curve (peak and persistency) and milk production in Holstein cows of first, second and third lactations. A total of 133 cows were used, selected from a herd of 280 cows, classified as small, medium and large based on the body size composite (stature x 10 + strength x 5 + depth x 3 + rump width x 2)/ 20. Data were collected from January 2007 to October 2009 in a commercial herd with intensive system of milk production, located in Salto Jacuí, Rio Grande do Sul, Brazil. Grazing oat and ryegrass, were used to feed the cows from May to October, and Tifton 85 and sorghum from November to April. Each animal received daily food supplement, with 20 kg of corn silage, and 12, 10.5 and 7.5 kg of concentrate (20% crude protein), for lots that produced 37 or more, 22 to 36, and 12 to 21 liters of milk daily per cow, respectively. All cows were subjected to the same conditions of facilities management being used and were milked three times daily. The experimental design was completely randomized with three treatments (body size). There was no interaction between body size composite and yield lactation. Peak milk production was later during the first lactation, but no significant differences were observed between the cows size. High persistency was more in second and third lactation, with increased milk production levels. Means for 305-days milk production in the lactation were 8,992.56; 9,472.33 and 10,015.50 liters for small, medium and large cows, respectively. On the basis of the total lactations, cows of medium size were more efficient than the other cow sizes, for this intensive production system.O objetivo deste estudo foi avaliar o efeito do composto corporal sobre a curva de lactação (pico e persistência) e a produção de leite em vacas da primeira, segunda e terceira lactações. Foram usadas 133 vacas, selecionadas de um rebanho de 280 em lactação, classificadas como pequenas, médias e grandes com base no composto corporal (estatura x 10 + força x 5 + profundidade x 3 + largura de garupa x 2)/20. Os dados foram coletados entre janeiro de 2007 e outubro de 2009, de um rebanho comercial com sistema intensivo de produção de leite, localizado em Salto do Jacuí, Rio Grande do Sul, Brasil. Para alimentação dos animais, foram usadas pastagens de aveia e azevém, entre maio e outubro, e Tifton 85 e sorgo forrageiro, entre novembro e abril. Cada animal recebeu diariamente complementação alimentar, com 20 kg de silagem de milho e 12, 10,5 e 7,5 kg de concentrado (com 20% de proteína bruta), para os lotes que produziam 37 ou mais, 22 a 36, e 12 a 21 litros de leite/vaca/dia, respectivamente. Todas as vacas foram submetidas às mesmas condições de manejo e ordenhadas três vezes ao dia. O delineamento experimental utilizado foi o inteiramente casualizado com três tratamentos (composto corporal). Não foi observada interação entre composto corporal e lactações. A produção de leite no pico de lactação foi mais tardia em animais da primeira lactação, não havendo diferença entre as vacas agrupadas em distintos tamanhos. A persistência de produção foi menor nos animais de segunda e de terceira lactação, embora com maior produção de leite que na primeira lactação. As médias de produção de leite para vacas pequenas, médias e grandes em 305 dias foram de 8.053,19; 8.809,56 e 9.217,83 litros, respectivamente. Com base na totalidade das lactações avaliadas, as vacas de porte médio são mais eficientes que as demais para o sistema intensivo de produção em análise.Universidade Federal de Santa MariaBrasilZootecniaUFSMPrograma de Pós-Graduação em ZootecniaCentro de Ciências RuraisOlivo, Clair Jorgehttp://lattes.cnpq.br/7352405107578701Silveira, Isabella Dias BarbosaDiaz, Jorge Damián StumpfsViégas, JulioRorato, Paulo Roberto NogaraSilva, Décio Adair Rebellatto da2023-03-29T13:20:38Z2023-03-29T13:20:38Z2010-02-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfhttp://repositorio.ufsm.br/handle/1/28454ark:/26339/001300000hfq1porAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2023-03-29T13:20:38Zoai:repositorio.ufsm.br:1/28454Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2024-07-29T10:40:23.042809Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porte Lactation curve and milk yield of holstein cows for small, medium and large size |
title |
Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porte |
spellingShingle |
Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porte Silva, Décio Adair Rebellatto da Composto corporal Dimensões corporais Peso corporal Persistência Pico de produção de leite Body dimensions Body size composite Body weight Persistency Peak milk production CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
title_short |
Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porte |
title_full |
Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porte |
title_fullStr |
Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porte |
title_full_unstemmed |
Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porte |
title_sort |
Curva de lactação e produção de leite de vacas da raça Holandesa de pequeno, médio e grande porte |
author |
Silva, Décio Adair Rebellatto da |
author_facet |
Silva, Décio Adair Rebellatto da |
author_role |
author |
dc.contributor.none.fl_str_mv |
Olivo, Clair Jorge http://lattes.cnpq.br/7352405107578701 Silveira, Isabella Dias Barbosa Diaz, Jorge Damián Stumpfs Viégas, Julio Rorato, Paulo Roberto Nogara |
dc.contributor.author.fl_str_mv |
Silva, Décio Adair Rebellatto da |
dc.subject.por.fl_str_mv |
Composto corporal Dimensões corporais Peso corporal Persistência Pico de produção de leite Body dimensions Body size composite Body weight Persistency Peak milk production CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
topic |
Composto corporal Dimensões corporais Peso corporal Persistência Pico de produção de leite Body dimensions Body size composite Body weight Persistency Peak milk production CNPQ::CIENCIAS AGRARIAS::ZOOTECNIA |
description |
The objective of this study was to evaluate the effect of the body size composite on lactation curve (peak and persistency) and milk production in Holstein cows of first, second and third lactations. A total of 133 cows were used, selected from a herd of 280 cows, classified as small, medium and large based on the body size composite (stature x 10 + strength x 5 + depth x 3 + rump width x 2)/ 20. Data were collected from January 2007 to October 2009 in a commercial herd with intensive system of milk production, located in Salto Jacuí, Rio Grande do Sul, Brazil. Grazing oat and ryegrass, were used to feed the cows from May to October, and Tifton 85 and sorghum from November to April. Each animal received daily food supplement, with 20 kg of corn silage, and 12, 10.5 and 7.5 kg of concentrate (20% crude protein), for lots that produced 37 or more, 22 to 36, and 12 to 21 liters of milk daily per cow, respectively. All cows were subjected to the same conditions of facilities management being used and were milked three times daily. The experimental design was completely randomized with three treatments (body size). There was no interaction between body size composite and yield lactation. Peak milk production was later during the first lactation, but no significant differences were observed between the cows size. High persistency was more in second and third lactation, with increased milk production levels. Means for 305-days milk production in the lactation were 8,992.56; 9,472.33 and 10,015.50 liters for small, medium and large cows, respectively. On the basis of the total lactations, cows of medium size were more efficient than the other cow sizes, for this intensive production system. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-02-19 2023-03-29T13:20:38Z 2023-03-29T13:20:38Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/28454 |
dc.identifier.dark.fl_str_mv |
ark:/26339/001300000hfq1 |
url |
http://repositorio.ufsm.br/handle/1/28454 |
identifier_str_mv |
ark:/26339/001300000hfq1 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/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 Maria Brasil Zootecnia UFSM Programa de Pós-Graduação em Zootecnia Centro de Ciências Rurais |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Brasil Zootecnia UFSM Programa de Pós-Graduação em Zootecnia Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
atendimento.sib@ufsm.br||tedebc@gmail.com |
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1814439793693556736 |