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Revista Brasileira de Ciência Veterinária
Article . 2013 . Peer-reviewed
Data sources: Crossref
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Correlações entre contagem bacteriana total e parâmetros de qualidade do leite

Authors: Diego Prado de Vargas; José Laerte Nörnberg; Renius de Oliveira Mello; Rudolf Brand Sheibler; Marceli Pazini Milani; Fernanda Cristina Breda Mello;

Correlações entre contagem bacteriana total e parâmetros de qualidade do leite

Abstract

Objetivou-se avaliar o efeito da contagem bacteriana total (CBT) sobre os constituintes do leite, verificando a influencia que as variaveis climaticas exercem sobre a CBT. Os dados utilizados foram de 1.541 unidades produtoras de leite, referentes a 15 municipios da bacia leiteira do Vale do Taquari, Rio Grande do Sul. Foram tabulados os dados de CBT, contagem de celulas somaticas (CCS) e composicao centesimal do leite, referentes ao periodo de junho de 2008 a dezembro de 2011, totalizando 44.089 amostras analisadas. As variaveis climaticas (medias mensais da temperatura media, da umidade relativa do ar e precipitacao pluviometrica) nao apresentaram correlacao significativa com a CBT. Os teores de gordura, proteina, minerais e solidos totais foram diretamente correlacionados com a CBT, enquanto que os solidos nao gordurosos e a lactose apresentaram comportamento inverso. Atraves da analise de componentes principais (ACP), auxiliada pelo metodo hierarquico aglomerativo de agrupamento, os sete tratamentos presentes no estudo foram reduzidos a quatro grupos de acordo com a similaridade. Assim, os leites com CBT superiores a 50.000 ate 500.000 UFC mL -1 , e ainda de valores acima de 500.000 ate 1.000.000 UFC mL -1 apresentam a mesma qualidade quimica e contagem de celulas somaticas, nao justificando a estratificacao de intervalos nesta amplitude de variacao para avaliacao do efeito da CBT nestes indicadores de qualidade.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average
gold