“The most common cause is the overfeeding of grains and/or commercial feeds. This can occur from an animal accidentally getting into the feed bin or through routine overfeeding. Other (less common causes) can be overloads of milk, apples, grapes, bread, sugar beets, or any other sources of sugar or starches. Additionally, feeding too little fiber (in the form of long forages) can lead to acidosis even if the diet is not excessive in starches or sugars. Management practices such as a rapid change in feed type or amount or changes in the frequency of feeding can also lead to acidosis.” (excerpted from HERE.)

Signs may include depression, lack of appetite, bloat, lack of rumination, staggering, diarrhea or lack of manure, muscle twitching, and teeth grinding. Acidosis often causes dehydration which can cause a fever.

Severe rumen acidosis can be accompanied by systemic and often fatal acidosis.