Acidosis in cows - diagnosis and role of nutrition in treatment
Rumen acidosis in cows is one of the most common metabolic disorders in dairy cattle breeding. It occurs both on large, intensive farms and in smaller herds, where any change in nutrition can quickly disturb the delicate balance in the rumen. This disease not only reduces milk yield, but also affects the health, fertility and life expectancy of cows.
What is ruminal acidosis and how does it manifest itself?
Ruminal acidosis is a condition in which the pH of the rumen content drops below the optimal level, disturbing the digestion process and the work of microorganisms responsible for feed fermentation. There are two main forms:
- acute acidosis (acute) - a sudden drop in pH below 5.0, usually after feeding too much concentrate
- subclinical acidosis (SARA) - a milder but chronic form in which the pH remains at 5.5-5.8 for a longer time.
Symptoms of SARA are often difficult to notice: decreased feed intake, looser feces, flatulence, decreased fat content in milk, apathy, and an increased number of cases of lameness. Scientific research shows that even a slight but long-term reduction in pH in the rumen can cause serious health and economic problems in the herd.
How does acidosis occur in dairy cows?
The main cause of acidosis is an excess of starch and sugars in the diet, originating from concentrated feed (e.g. cereal meal, corn, pulp). When a cow eats too much of them, rapid fermentation begins in the rumen, producing lactic acid and volatile fatty acids (VFA). Too little structural fiber (NDF) in the dose means that the rumen does not have time to "buffer" and the pH drops rapidly.
According to the 2023 Penn State Extension guidelines, acidosis is most often caused by:
- too rapid changes in the composition of TMR,
- Feed cut too finely,
- too long breaks between feedings,
- or cows "sorting" the feed (eating only the tasty parts).
As a result, the functioning of the rumen is disturbed, microflora is lost and milk production decreases.
Try the DEMO!How to recognize acidosis in a herd?
The diagnosis of ruminal acidosis requires observing not only individual symptoms, but the entire picture of the herd. The most common signals are:
- decrease in feed intake,
- loose feces,
- reduced fat to protein ratio in milk (<1.0),
- worse appetite and decreased milk yield,
- apathy, lameness and deterioration of condition.
Modern farms are increasingly using digital tools that monitor TMR intake and rumination activity, which help detect acidosis before visible clinical symptoms appear.
The role of nutrition in the treatment and prevention of acidosis
Treatment of acidosis in cows always begins with correcting the feed ration. The aim is to restore the balance between concentrated and roughage. According to the NRC (National Research Council), the dose should contain a minimum of 18-19% structural fiber (NDF) and an appropriate amount of buffers such as sodium bicarbonate (NaHCO₃). Research shows that the use of buffers not only stabilizes rumen pH, but also increases feed intake and improves milk yield. It is equally important to regularly monitor the quality of roughage - especially those that may become hot or have too low a pH (e.g. corn silage). In the prevention of acidosis, consistency in feeding is also important - preferably at regular times and in a well-mixed form.
Smart Feed - digital precision in the fight against acidosis
On modern farms, precise nutrition is already an everyday occurrence. The Smart Feed application is a tool that supports the breeder in controlling and balancing food doses. Thanks to integration with the feed wagon and Dinamica Generale systems, the user has a full view of the TMR composition, the number of components and the actual intake by the herd.
Smart Feed helps maintain the optimal ratio of rough to concentrate feed, reduce mixing errors and respond to changes in milk production or herd condition. Data from the application can be analyzed in real time, enabling quick response to the first signals of acidosis. In practice, this means less feed loss, more stable rumen pH and better milk results - without increasing feeding costs.
Rumen acidosis in cows is a serious problem, but fully controllable. The key is proper nutrition, an adequate amount of fiber and a stable feed ration, as well as regular observation of the cows. With the help of tools such as Smart Feed, breeders can not only prevent metabolic diseases, but also improve nutrition efficiency and production profitability.
For more information - follow our profile on Facebook and visit Smart Feed blog, where you will find practical advice and news from the world of modern agriculture!
Contact