2007
DOI: 10.1590/s0100-204x2007001200017
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Inestabilidad de la leche asociada a componentes lácteos y estacionalidad en vacas a pastoreo

Abstract: El objetivo de este trabajo fue caracterizar rebaños lecheros que presentaban muestras de leche positivas a la prueba de alcohol sin estar ácidas, y compararlos con predios negativos a esta prueba, considerándose el efecto de la estacionalidad. Se estudiaron cuatro rebaños (tres positivos a la prueba de alcohol y uno negativo). En dos años, se muestreó leche durante tres meses en lactancias de invierno (época 1) y tres meses en lactancias de verano (época 2). En la dieta, se realizó análisis proximal relativo … Show more

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Cited by 10 publications
(8 citation statements)
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“…In Chile, farms producing milk with low milk ethanol-stability also fed their animals with high fiber forages, showing a negative relationship between milk instability and nutritional quality of feeds (Barchiesi-Ferrari et al, 2007). Other studies also verified a positive relation between food shortage (Zanela et al, 2006) or low quality with the frequency of ethanol-instability of milk (Marques et al, 2010;Ponce and Hernández, 2001).…”
Section: Discussionmentioning
confidence: 95%
“…In Chile, farms producing milk with low milk ethanol-stability also fed their animals with high fiber forages, showing a negative relationship between milk instability and nutritional quality of feeds (Barchiesi-Ferrari et al, 2007). Other studies also verified a positive relation between food shortage (Zanela et al, 2006) or low quality with the frequency of ethanol-instability of milk (Marques et al, 2010;Ponce and Hernández, 2001).…”
Section: Discussionmentioning
confidence: 95%
“…The improved milk stability in the ethanol test (with higher levels of nutritional supply) have been reported when diets with a low percentage of fibre (Barchiesi-Ferrari et al, 2007) or high overall nutrient supply (Fruscalso et al, 2013) were fed to animals, albeit in the latter just two diets (50% of feed restriction and with no restriction) were evaluated. The integrity of the tight junctions of mammary epithelial cells is disturbed by nutrient deprivation and it is associated with lower lactose content but higher concentrations of sodium and chloride in milk (Chavez et al, 2004;.…”
Section: Discussionmentioning
confidence: 86%
“…A mesma situação ocorre com a estabilidade do leite, ou seja, quanto maior o aporte nutricional, principalmente energético, disponibilizado de forma balanceada para produção de leite, maior será a estabilidade do leite ao teste do álcool. Em um estudo realizado no Chile, Barchiesi-Ferrari et al (2007) observaram que a produção de leite com baixa estabilidade era proveniente de propriedades que utilizavam alimentos de baixa qualidade. Outros estudos também observaram uma relação positiva entre a qualidade nutricional dos alimentos com a estabilidade do leite ao teste do álcool (Zanela et al, 2006;Marques et al, 2010;Stumpf et al, 2013;Gabbi et al, 2013).…”
Section: Resultsunclassified