Heat stress abatement during the dry period influences metabolic gene expression and improves immune status in the transition period of dairy cows.

Abstract

Heat stress (HT) and photoperiod affect milk production and immune status of dairy cows. The objective was to evaluate the effects of HT abatement prepartum under controlled photoperiod on hepatic metabolic gene expression and cellular immune function of periparturient Holstein cows (n=21). Cows were dried off 46 d before expected calving date and assigned… (More)
DOI: 10.3168/jds.2009-3004

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