Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of urea

Detalhes bibliográficos
Autor(a) principal: Souza, Vanice Mendes de
Data de Publicação: 2015
Outros Autores: Rocha Júnior, Vicente Ribeiro, Caldeira, Luciana Albuquerque, Antunes, Ana Paula da Silva, Ruas, José Reinaldo Mendes, Souza, Criszoel Ferreira, Aguiar, Ana Cássia Rodrigues de, Lanna, Dante Pazzanese Duarte
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18997
Resumo: We evaluated the physicochemical composition and fatty acid profile of milk from F1 Holstein × Zebu cows that were fed increasing levels of urea (0%, 33%, 66% and 100%, corresponding to 0%, 0.92%, 1.84% and 2.77% CP as NPN) as a substitute for soybean meal. Eight lactating F1 Holstein × Zebu cows producing an average of 10 kg of milk per day corrected to 3.5% fat, were placed in two 4 × 4 Latin squares (4 animals, 4 diets and 4 periods). Each experimental period lasted 18 days. Milk samples from each cow were collected from morning and afternoon milkings and analyzed for composition and fatty acid concentration. Milk urea nitrogen increased linearly (P < 0.05) with increasing dietary urea. Other variables including fat content, protein, fixed mineral residues, lactose, total nonfat solids, acidity, density, casein, cryoscopic index, somatic cell count, and milk fatty acid concentrations, were not affected by treatment. Thus, urea provides a viable alternative to soybean meal that does not affect the characteristics of milk from primiparous F1 Holstein × Zebu cows, producing up to 10 kg of milk corrected to 3.5% fat day-1.
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spelling Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of ureaComposição físico-química e perfil de ácidos graxos do leite de vacas F1 Holandês x Zebu alimentadas com teores crescentes de ureiaPhysicochemical compositionSoybean mealNon-protein nitrogen.Composição físico-químicaFarelo de sojaNitrogênio não protéico.We evaluated the physicochemical composition and fatty acid profile of milk from F1 Holstein × Zebu cows that were fed increasing levels of urea (0%, 33%, 66% and 100%, corresponding to 0%, 0.92%, 1.84% and 2.77% CP as NPN) as a substitute for soybean meal. Eight lactating F1 Holstein × Zebu cows producing an average of 10 kg of milk per day corrected to 3.5% fat, were placed in two 4 × 4 Latin squares (4 animals, 4 diets and 4 periods). Each experimental period lasted 18 days. Milk samples from each cow were collected from morning and afternoon milkings and analyzed for composition and fatty acid concentration. Milk urea nitrogen increased linearly (P < 0.05) with increasing dietary urea. Other variables including fat content, protein, fixed mineral residues, lactose, total nonfat solids, acidity, density, casein, cryoscopic index, somatic cell count, and milk fatty acid concentrations, were not affected by treatment. Thus, urea provides a viable alternative to soybean meal that does not affect the characteristics of milk from primiparous F1 Holstein × Zebu cows, producing up to 10 kg of milk corrected to 3.5% fat day-1.Objetivou-se avaliar a composição físico-química e o perfil de ácidos graxos do leite de vacas F1 Holandês × Zebu alimentadas com teores crescentes de ureia (0; 33%; 66% e 100%, que corresponderam a 0, 0,92, 1,84 e 2,77% de PB na forma de NNP), em substituição ao farelo de soja. Foram utilizadas oito vacas F1 Holandês × Zebu com produção média de 10 kg de leite corrigido para 3,5% de gordura dia-1, em duplo quadrados latinos 4 × 4 (4 animais, 4 dietas e 4 períodos). Os períodos tiveram dezoito dias. As amostras de leite de cada vaca, da ordenha da manhã e da tarde, foram coletadas e analisadas quanto à composição e a concentração de ácidos graxos. O nitrogênio uréico no leite aumentou linearmente (P<0,05) em função dos teores de ureia na dieta. Outras variáveis, incluindo os teores de gordura, proteína, resíduo mineral fixo, lactose, extrato seco total e desengordurado, acidez, densidade, caseína, índice crioscópico, contagem de células somáticas, e a concentração de ácidos graxos do leite, não sofreram efeito dos tratamentos. Portanto conclui-se que a substituição total do farelo de soja pela uréia não influencia composição e nem a concentração de ácidos graxos do leite de vacas primíparas F1 Holandês × Zebu, com produção de até 10 kg de leite corrigido para 3,5% de gordura dia-1.UEL2015-12-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1899710.5433/1679-0359.2015v36n6Supl2p4435Semina: Ciências Agrárias; Vol. 36 No. 6Supl2 (2015); 4435-4446Semina: Ciências Agrárias; v. 36 n. 6Supl2 (2015); 4435-44461679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18997/17660http://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessSouza, Vanice Mendes deRocha Júnior, Vicente RibeiroCaldeira, Luciana AlbuquerqueAntunes, Ana Paula da SilvaRuas, José Reinaldo MendesSouza, Criszoel FerreiraAguiar, Ana Cássia Rodrigues deLanna, Dante Pazzanese Duarte2022-12-02T15:25:27Zoai:ojs.pkp.sfu.ca:article/18997Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-12-02T15:25:27Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of urea
Composição físico-química e perfil de ácidos graxos do leite de vacas F1 Holandês x Zebu alimentadas com teores crescentes de ureia
title Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of urea
spellingShingle Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of urea
Souza, Vanice Mendes de
Physicochemical composition
Soybean meal
Non-protein nitrogen.
Composição físico-química
Farelo de soja
Nitrogênio não protéico.
title_short Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of urea
title_full Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of urea
title_fullStr Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of urea
title_full_unstemmed Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of urea
title_sort Physicochemical composition and fatty acid profile of milk from F1 Holstein x Zebu cows fed with increasing concentrations of urea
author Souza, Vanice Mendes de
author_facet Souza, Vanice Mendes de
Rocha Júnior, Vicente Ribeiro
Caldeira, Luciana Albuquerque
Antunes, Ana Paula da Silva
Ruas, José Reinaldo Mendes
Souza, Criszoel Ferreira
Aguiar, Ana Cássia Rodrigues de
Lanna, Dante Pazzanese Duarte
author_role author
author2 Rocha Júnior, Vicente Ribeiro
Caldeira, Luciana Albuquerque
Antunes, Ana Paula da Silva
Ruas, José Reinaldo Mendes
Souza, Criszoel Ferreira
Aguiar, Ana Cássia Rodrigues de
Lanna, Dante Pazzanese Duarte
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Souza, Vanice Mendes de
Rocha Júnior, Vicente Ribeiro
Caldeira, Luciana Albuquerque
Antunes, Ana Paula da Silva
Ruas, José Reinaldo Mendes
Souza, Criszoel Ferreira
Aguiar, Ana Cássia Rodrigues de
Lanna, Dante Pazzanese Duarte
dc.subject.por.fl_str_mv Physicochemical composition
Soybean meal
Non-protein nitrogen.
Composição físico-química
Farelo de soja
Nitrogênio não protéico.
topic Physicochemical composition
Soybean meal
Non-protein nitrogen.
Composição físico-química
Farelo de soja
Nitrogênio não protéico.
description We evaluated the physicochemical composition and fatty acid profile of milk from F1 Holstein × Zebu cows that were fed increasing levels of urea (0%, 33%, 66% and 100%, corresponding to 0%, 0.92%, 1.84% and 2.77% CP as NPN) as a substitute for soybean meal. Eight lactating F1 Holstein × Zebu cows producing an average of 10 kg of milk per day corrected to 3.5% fat, were placed in two 4 × 4 Latin squares (4 animals, 4 diets and 4 periods). Each experimental period lasted 18 days. Milk samples from each cow were collected from morning and afternoon milkings and analyzed for composition and fatty acid concentration. Milk urea nitrogen increased linearly (P < 0.05) with increasing dietary urea. Other variables including fat content, protein, fixed mineral residues, lactose, total nonfat solids, acidity, density, casein, cryoscopic index, somatic cell count, and milk fatty acid concentrations, were not affected by treatment. Thus, urea provides a viable alternative to soybean meal that does not affect the characteristics of milk from primiparous F1 Holstein × Zebu cows, producing up to 10 kg of milk corrected to 3.5% fat day-1.
publishDate 2015
dc.date.none.fl_str_mv 2015-12-16
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18997
10.5433/1679-0359.2015v36n6Supl2p4435
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18997
identifier_str_mv 10.5433/1679-0359.2015v36n6Supl2p4435
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18997/17660
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 36 No. 6Supl2 (2015); 4435-4446
Semina: Ciências Agrárias; v. 36 n. 6Supl2 (2015); 4435-4446
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
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