Subacute ruminal acidosis: a still incompletely understood pathology

Subacute ruminal acidosis (SARA) is a major problem in high-producing dairy cows. The drop in ruminal pH below 5.6 was considered as the major factor inducing this pathology till recently. However, new technologies such as continuous monitoring of ruminal pH and rumen microbiome assessment have contributed to reconsider this concept. The aim of this article is to review the literature for a better understanding of SARA