SciELO - Scientific Electronic Library Online

 
vol.45 número1Rumenocentesis dorsomedial: un procedimiento seguro para la obtención de líquido ruminal en vacas lecheras a pastoreoEfecto de grupo racial y edad al primer parto sobre el número de partos durante la vida útil de vacas cebú índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Archivos de medicina veterinaria

versión impresa ISSN 0301-732X

Resumen

CEBALLOS, A et al. Bulk tank milk selenium concentration in dairy herds from Southern Chile and its relationship to productive performance. Arch. med. vet. [online]. 2013, vol.45, n.1, pp.33-39. ISSN 0301-732X.  http://dx.doi.org/10.4067/S0301-732X2013000100006.

An observational study was conducted in 59 Chilean dairy farms to evaluate bulk tank milk selenium (Se) concentration, and its association with measures of milk production parameters and udder health, measured as bulk tank somatic cell count. Fifty-nine dairy herds from Southern Chile were selected. Bulk tank milk samples were collected four times (Spring 2007 and Summer, Autumn and Winter 2008). A survey about general and nutritional management of the herds was conducted. Data on productive performance were also collected. Data were analyzed by using linear mixed models. Mean bulk tank milk Se concentration was 14.7 µg/L (SD: 6.5 µg/L), indicating a high variation among herds (44%). No association between bulk tank milk Se concentration and herd productive performance was observed. Nevertheless, 82% (n = 231) of bulk tank milk samples had a milk Se concentration lower than the reference of 20 µg/L. These results are indicating that bulk tank milk Se concentration in selected dairy herds from Southern Chile is lower than international reference values, reflecting an inadequate intake of Se. This inadequacy was not necessarily translated into low milk yield or low quality milk.

Palabras clave : dairy cattle; milk; bulk tank; selenium.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons