Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Ciência animal brasileira (Online) |
Texto Completo: | https://revistas.ufg.br/vet/article/view/72795 |
Resumo: | This study aimed to verify the relationship between parameters of physicochemical composition, microbiological quality, and volume of milk delivered to a dairy in the northern region of Rio Grande do Sul, in 2020, at four different times of the year. For this, the parameters evaluated were volume, protein, fat, lactose, total solids, somatic cell count (SCC), and standard plate count (SPC). Data were collected in January, April, July, and October in 1,634 dairy farms located in the northern region of Rio Grande do Sul. Data were evaluated using Pearson's correlation, and the means were compared using the Tukey test, both at 5% significance. Milk fat and protein contents were higher during autumn (4.02 and 3.35%) and winter (3.90 and 3.36%, respectively), contributing to the higher solid’s concentration in the same period. The microbiological quality of milk, especially the SCC, is compromised during the warmer months due to the thermal stress suffered by the animals, challenging the immune system and increasing susceptibility to diseases. The highest milk CPP in the winter period (247.12 x 10³ CFU/mL) refers to the transfer of contamination from the teat to the tank due to the inefficiency of pre-milking procedures. Therefore, the microbiological quality of the milk was variable between the periods studied, and the fat and protein contents suffered reductions during the summer, reflecting in lower remuneration for quality, given the high CCS in the same season.Keywords: Dairy cattle; Casein; Climatology; Standard plate count; Lactose. |
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Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, BrazilInfluência das estações do ano sobre a qualidade microbiológica do leite de fazendas leiteiras da região norte do Rio Grande do Sul, BrasilThis study aimed to verify the relationship between parameters of physicochemical composition, microbiological quality, and volume of milk delivered to a dairy in the northern region of Rio Grande do Sul, in 2020, at four different times of the year. For this, the parameters evaluated were volume, protein, fat, lactose, total solids, somatic cell count (SCC), and standard plate count (SPC). Data were collected in January, April, July, and October in 1,634 dairy farms located in the northern region of Rio Grande do Sul. Data were evaluated using Pearson's correlation, and the means were compared using the Tukey test, both at 5% significance. Milk fat and protein contents were higher during autumn (4.02 and 3.35%) and winter (3.90 and 3.36%, respectively), contributing to the higher solid’s concentration in the same period. The microbiological quality of milk, especially the SCC, is compromised during the warmer months due to the thermal stress suffered by the animals, challenging the immune system and increasing susceptibility to diseases. The highest milk CPP in the winter period (247.12 x 10³ CFU/mL) refers to the transfer of contamination from the teat to the tank due to the inefficiency of pre-milking procedures. Therefore, the microbiological quality of the milk was variable between the periods studied, and the fat and protein contents suffered reductions during the summer, reflecting in lower remuneration for quality, given the high CCS in the same season.Keywords: Dairy cattle; Casein; Climatology; Standard plate count; Lactose.O objetivo desse estudo foi verificar a relação entre parâmetros da composição físico-química, qualidade microbiológica e volume de leite entregue a um laticínio na região Norte do Rio Grande do Sul, no ano de 2020, em quatro diferentes épocas do ano. Para isso, foram avaliados os parâmetros volume, proteína, gordura, lactose, sólidos totais, contagem de células somáticas (CCS) e contagem padrão em placas (CPP). Os dados foram coletados nos meses de janeiro, abril, julho e outubro, em 1.634 propriedades leiteiras localizadas na região Norte do Rio Grande do Sul. Os dados foram avaliados por meio da correlação de Pearson e as médias foram comparadas pelo teste de Tukey, ambos a 5% de significância. Os teores de gordura e proteína do leite foram maiores durante o outono (4,02 e 3,35%) e o inverno (3,90 e 3,36%, respectivamente), contribuindo para a maior concentração de sólidos no mesmo período. A qualidade microbiológica do leite, principalmente a CCS, é comprometida durante os meses mais quentes, em virtude do estresse térmico sofrido pelos animais, desafiando o sistema imune e aumentando a susceptibilidade a enfermidades. A maior CPP do leite no período de inverno (247,12 x 10³ UFC/mL) remete à transferência de sujidades do teto para o tanque, em virtude da ineficiência dos procedimentos pré-ordenha. Portanto, a qualidade microbiológica do leite foi variável entre os períodos estudados, sendo que os teores de gordura e proteína sofreram reduções durante o verão, refletindo em menores remunerações por qualidade, visto a alta CCS na mesma estação. Palavras-chave: Bovinocultura de leite; Caseína; Climatologia; Contagem padrão em placas; Lactose.Universidade Federal de Goiás2022-10-19info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://revistas.ufg.br/vet/article/view/72795Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 23 (2022): Continuous publicationCiência Animal Brasileira / Brazilian Animal Science; v. 23 (2022): Publicação contínua1809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporenghttps://revistas.ufg.br/vet/article/view/72795/38880https://revistas.ufg.br/vet/article/view/72795/39062https://revistas.ufg.br/vet/article/view/72795/38881https://revistas.ufg.br/vet/article/view/72795/39063Copyright (c) 2022 Ciência Animal Brasileira / Brazilian Animal Sciencehttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessNogara, Karise FernandaBill Kaelle, Gislaine Cristina Gouveia Tavares, Queila Marcon, Tailine ReginaGopinger, EdenilseZopollatto, Maity de Camargo Debortoli, Elísio2023-03-23T18:43:54Zoai:ojs.revistas.ufg.br:article/72795Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2023-03-23T18:43:54Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)false |
dc.title.none.fl_str_mv |
Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, Brazil Influência das estações do ano sobre a qualidade microbiológica do leite de fazendas leiteiras da região norte do Rio Grande do Sul, Brasil |
title |
Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, Brazil |
spellingShingle |
Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, Brazil Nogara, Karise Fernanda |
title_short |
Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, Brazil |
title_full |
Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, Brazil |
title_fullStr |
Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, Brazil |
title_full_unstemmed |
Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, Brazil |
title_sort |
Influence of the seasons on the quality and composition of milk from dairy farms in the northern region of Rio Grande do Sul, Brazil |
author |
Nogara, Karise Fernanda |
author_facet |
Nogara, Karise Fernanda Bill Kaelle, Gislaine Cristina Gouveia Tavares, Queila Marcon, Tailine Regina Gopinger, Edenilse Zopollatto, Maity de Camargo Debortoli, Elísio |
author_role |
author |
author2 |
Bill Kaelle, Gislaine Cristina Gouveia Tavares, Queila Marcon, Tailine Regina Gopinger, Edenilse Zopollatto, Maity de Camargo Debortoli, Elísio |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Nogara, Karise Fernanda Bill Kaelle, Gislaine Cristina Gouveia Tavares, Queila Marcon, Tailine Regina Gopinger, Edenilse Zopollatto, Maity de Camargo Debortoli, Elísio |
description |
This study aimed to verify the relationship between parameters of physicochemical composition, microbiological quality, and volume of milk delivered to a dairy in the northern region of Rio Grande do Sul, in 2020, at four different times of the year. For this, the parameters evaluated were volume, protein, fat, lactose, total solids, somatic cell count (SCC), and standard plate count (SPC). Data were collected in January, April, July, and October in 1,634 dairy farms located in the northern region of Rio Grande do Sul. Data were evaluated using Pearson's correlation, and the means were compared using the Tukey test, both at 5% significance. Milk fat and protein contents were higher during autumn (4.02 and 3.35%) and winter (3.90 and 3.36%, respectively), contributing to the higher solid’s concentration in the same period. The microbiological quality of milk, especially the SCC, is compromised during the warmer months due to the thermal stress suffered by the animals, challenging the immune system and increasing susceptibility to diseases. The highest milk CPP in the winter period (247.12 x 10³ CFU/mL) refers to the transfer of contamination from the teat to the tank due to the inefficiency of pre-milking procedures. Therefore, the microbiological quality of the milk was variable between the periods studied, and the fat and protein contents suffered reductions during the summer, reflecting in lower remuneration for quality, given the high CCS in the same season.Keywords: Dairy cattle; Casein; Climatology; Standard plate count; Lactose. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-10-19 |
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://revistas.ufg.br/vet/article/view/72795 |
url |
https://revistas.ufg.br/vet/article/view/72795 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/vet/article/view/72795/38880 https://revistas.ufg.br/vet/article/view/72795/39062 https://revistas.ufg.br/vet/article/view/72795/38881 https://revistas.ufg.br/vet/article/view/72795/39063 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Ciência Animal Brasileira / Brazilian Animal Science http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Ciência Animal Brasileira / Brazilian Animal Science http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 23 (2022): Continuous publication Ciência Animal Brasileira / Brazilian Animal Science; v. 23 (2022): Publicação contínua 1809-6891 1518-2797 reponame:Ciência animal brasileira (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Ciência animal brasileira (Online) |
collection |
Ciência animal brasileira (Online) |
repository.name.fl_str_mv |
Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
||revistacab@gmail.com |
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1789440223963250688 |