Timely Topics

Intramammary infusion of Escherichia coli lipopolysaccharide negatively affects feed intake, chewing, and clinical variables, but some effects are stronger in cows experiencing subacute rumen acidosis

By S. Aditya, E. Humer, P. Pourazad, R. Khiaosa-Ard, J. Huber, Q. Zebeli

Cows with Sub Acute Ruminal Acidosis (SARA) are more susceptible to other health challenges than healthy cows. This study showed differences in fever symptoms, DMI and even chewing activity were more pronounced in SARA cows compared to healthy animals. Read

Changes in digestive microbiota due to a grain-based SARA challenge

By Jan C. Plaizier, Shucong Li, Anne Mette Danscher, Hooman Derakshani, Pia H. Andersen, Ehsan Khafipour

A study showing how a grain-based diet-induced subacute ruminal acidosis (SARA) challenge impacts the rumen microbiota of lactating dairy cows. The richness, the diversity, as well as the stability of the bacterial communities were reduced for SARA challenged cows. Both ruminal and fecal microbiota were changed, indicating that the rumen but also the hindgut microbiota are affected by SARA challenge. Read
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