Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum. Animal Sciences (Online) |
Texto Completo: | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2016 |
Resumo: | 474 milking herds from the north region of Paraná State were analyzed in this study. The herds were characterized for average productivity, genetic group, exploration and milking systems. Two milk samples (bulk or brass) were collected monthly from each farm, totalizing 21.957 samples. They were processed to determine fat, protein and somatic cells count (SCC) at Centralized Analyses Laboratory from Milking Herds Analyses Program of Paraná State. The data was submitted to analysis of variance (proc glm), regression analysis (proc reg) and correlation analysis (proc corr) in SAS to determine the influence of environmental and racial factors on SCC and milk composition, as well as SCC influence on protein and fat levels. Except for the milk system (p > 0.05), all other studied effects were highly significant (p < 0.0001) on SCC. For the studied effects on protein and fat, the only one showing no significance (p > 0.05) was the herd average production, on protein level. The effect of SCC on milk protein and fat was statistically relevant (p < 0.0001). With the increase of SCC, there was a reduction in protein level and an increase in fat level, although only 0.53% and 3.02% of the variation of these solids, respectively, can be credited to SCC. |
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Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016Influência de fatores raciais e manejo nutricional na contagem de células somáticas e nos constituintes do leite de vacas holandesas e mestiças no Norte do Estado do Paraná, Brasil - DOI: 10.4025/actascianimsci.v25i2.2016bovinos leiteirosgorduraprodutividadeproteínasistema de produção5.04.00.00-2 Zootecnia474 milking herds from the north region of Paraná State were analyzed in this study. The herds were characterized for average productivity, genetic group, exploration and milking systems. Two milk samples (bulk or brass) were collected monthly from each farm, totalizing 21.957 samples. They were processed to determine fat, protein and somatic cells count (SCC) at Centralized Analyses Laboratory from Milking Herds Analyses Program of Paraná State. The data was submitted to analysis of variance (proc glm), regression analysis (proc reg) and correlation analysis (proc corr) in SAS to determine the influence of environmental and racial factors on SCC and milk composition, as well as SCC influence on protein and fat levels. Except for the milk system (p > 0.05), all other studied effects were highly significant (p < 0.0001) on SCC. For the studied effects on protein and fat, the only one showing no significance (p > 0.05) was the herd average production, on protein level. The effect of SCC on milk protein and fat was statistically relevant (p < 0.0001). With the increase of SCC, there was a reduction in protein level and an increase in fat level, although only 0.53% and 3.02% of the variation of these solids, respectively, can be credited to SCC.Foram analisados 474 rebanhos de bovinos leiteiros da região Norte do Paraná. Os rebanhos foram caracterizados quanto à produtividade média, ao grupo genético predominante, ao sistema de exploração e de ordenha utilizado. De cada propriedade foram colhidas mensalmente duas amostras compostas de leite, do tanque ou do latão, perfazendo um total de 21.957, para a determinação dos teores de gordura, de proteína e de contagem de células somáticas (CCS), no Laboratório de Análises Centralizadas do Programa de Análise de Rebanhos Leiteiros do Paraná. Com o objetivo de determinar a influência de fatores ambientais e raciais na CCS e constituintes do leite, bem como a influência da CCS sobre os teores de proteína e de gordura, os dados foram submetidos à análise de variância pelo método dos quadrados mínimos (proc glm), análise de regressão (proc reg) e análise de correlação (proc corr), no pacote estatístico SAS. Os efeitos estudados para a CCS mostraram-se altamente significativos (p < 0,0001), com exceção do sistema de ordenha (p < 0,05). Dos efeitos estudados para a proteína e para a gordura, a produção do rebanho não mostrou efeito significativo sobre o teor de proteína (p>0,05). O efeito da CCS sobre os teores de proteína e de gordura láctea foi estatisticamente relevante (p < 0,0001). Com o aumento da CCS, ocorreu diminuição no teor de proteína e aumento no teor de gordura, embora apenas 0,53% e 3,02% da variação desses sólidos, respectivamente, possam ser creditados à CCS.Editora da Universidade Estadual de Maringá2008-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/201610.4025/actascianimsci.v25i2.2016Acta Scientiarum. Animal Sciences; Vol 25 No 2 (2003); 323-329Acta Scientiarum. Animal Sciences; v. 25 n. 2 (2003); 323-3291807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2016/1408Gonzalez, Silvana GomesMüller, Ernst EckehardtRibeiro, Edson Luís de AzambujaFreitas, Júlio César deGodoy, Agda Luiza deinfo:eu-repo/semantics/openAccess2024-05-17T13:03:36Zoai:periodicos.uem.br/ojs:article/2016Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/oaiactaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com1807-86721806-2636opendoar:2024-05-17T13:03:36Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016 Influência de fatores raciais e manejo nutricional na contagem de células somáticas e nos constituintes do leite de vacas holandesas e mestiças no Norte do Estado do Paraná, Brasil - DOI: 10.4025/actascianimsci.v25i2.2016 |
title |
Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016 |
spellingShingle |
Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016 Gonzalez, Silvana Gomes bovinos leiteiros gordura produtividade proteína sistema de produção 5.04.00.00-2 Zootecnia |
title_short |
Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016 |
title_full |
Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016 |
title_fullStr |
Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016 |
title_full_unstemmed |
Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016 |
title_sort |
Influence of racial and nutritional management factors on somatic cells count and milk composition of Holstein and mixed breed cows in the north of Paraná State, Brazil - DOI: 10.4025/actascianimsci.v25i2.2016 |
author |
Gonzalez, Silvana Gomes |
author_facet |
Gonzalez, Silvana Gomes Müller, Ernst Eckehardt Ribeiro, Edson Luís de Azambuja Freitas, Júlio César de Godoy, Agda Luiza de |
author_role |
author |
author2 |
Müller, Ernst Eckehardt Ribeiro, Edson Luís de Azambuja Freitas, Júlio César de Godoy, Agda Luiza de |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Gonzalez, Silvana Gomes Müller, Ernst Eckehardt Ribeiro, Edson Luís de Azambuja Freitas, Júlio César de Godoy, Agda Luiza de |
dc.subject.por.fl_str_mv |
bovinos leiteiros gordura produtividade proteína sistema de produção 5.04.00.00-2 Zootecnia |
topic |
bovinos leiteiros gordura produtividade proteína sistema de produção 5.04.00.00-2 Zootecnia |
description |
474 milking herds from the north region of Paraná State were analyzed in this study. The herds were characterized for average productivity, genetic group, exploration and milking systems. Two milk samples (bulk or brass) were collected monthly from each farm, totalizing 21.957 samples. They were processed to determine fat, protein and somatic cells count (SCC) at Centralized Analyses Laboratory from Milking Herds Analyses Program of Paraná State. The data was submitted to analysis of variance (proc glm), regression analysis (proc reg) and correlation analysis (proc corr) in SAS to determine the influence of environmental and racial factors on SCC and milk composition, as well as SCC influence on protein and fat levels. Except for the milk system (p > 0.05), all other studied effects were highly significant (p < 0.0001) on SCC. For the studied effects on protein and fat, the only one showing no significance (p > 0.05) was the herd average production, on protein level. The effect of SCC on milk protein and fat was statistically relevant (p < 0.0001). With the increase of SCC, there was a reduction in protein level and an increase in fat level, although only 0.53% and 3.02% of the variation of these solids, respectively, can be credited to SCC. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-04-16 |
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://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2016 10.4025/actascianimsci.v25i2.2016 |
url |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2016 |
identifier_str_mv |
10.4025/actascianimsci.v25i2.2016 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2016/1408 |
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 |
Editora da Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Animal Sciences; Vol 25 No 2 (2003); 323-329 Acta Scientiarum. Animal Sciences; v. 25 n. 2 (2003); 323-329 1807-8672 1806-2636 reponame:Acta Scientiarum. Animal Sciences (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Animal Sciences (Online) |
collection |
Acta Scientiarum. Animal Sciences (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com |
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1799315357957095424 |