The targeted management of urine pH in sows is a central component of modern health strategies around farrowing. Controlled urine acidification based on DCAB management can promote metabolic stability, reduce the risk of metabolic problems, and sustainably support animal health.
Why Urine Acidification is Relevant for Sows
Around farrowing, sows undergo a phase of increased metabolic stress. Calcium metabolism must adapt quickly, the immune system is challenged, and the risk of urinary tract infections and MMA complex (Mastitis-Metritis-Agalactia) increases.
An alkaline urine pH promotes the proliferation of pathogenic bacteria such as E. coli and Actinobacillus suis in the urogenital tract. At the same time, calcium mobilization from bones is restricted in an alkaline metabolic environment – a factor that can impair metabolic stability around farrowing.
The targeted reduction of urine pH into the acidic range (~pH 6) creates an unfavorable environment for pathogenic bacteria and simultaneously supports calcium mobilization – two central factors for successful farrowing and healthy lactation.
DCAB Concepts in Sow Feeding
The Dietary Cation-Anion Balance (DCAB) describes the ratio of cations (Na⁺, K⁺) to anions (Cl⁻, SO₄²⁻) in the ration. A targeted reduction of DCAB through the use of anionic salts – particularly ammonium chloride – shifts metabolism towards a mild metabolic acidosis.
This controlled acidification activates mechanisms of calcium mobilization and lowers urine pH. The effect is measurable, reproducible, and well-documented in studies.
Study Results: Urine Acidification in Sows
- Significant reduction of urine pH using specially processed ammonium chloride
- Rapid effect – pH reduction already within a few days after initiation
- Good acceptance – stable feed intake despite ammonium chloride in the feed
- Support for modern health strategies around farrowing
- High reproducibility of results under practical conditions
Connection between Urine pH and Metabolism
Urine pH is a sensitive indicator of systemic acid-base status. In sows, an alkaline urine pH (>7) correlates with an increased risk for:
- Urinary tract infections caused by E. coli and other pathogenic bacteria
- MMA complex (Mastitis-Metritis-Agalactia) with direct effects on piglet health
- Restricted calcium mobilization and associated farrowing complications
- Reduced milk yield and delayed recovery after farrowing
A targeted reduction of urine pH to the range of ~6 measurably reduces these risks and supports the sow’s metabolic adaptation to the demands of farrowing and early lactation.
Why Palatability is Crucial
Ammonium chloride is functionally effective as an anionic salt – but it presents sensory challenges. Unprocessed ammonium chloride can reduce feed intake and thus counteract the desired effect.
Because: Not only the ingredient determines the success of a DCAB strategy – but whether it is consistently consumed in sufficient quantities. Reduced feed intake around farrowing is counterproductive and can further exacerbate the metabolic situation.
Technologically processed ammonium chloride – as in BEWI®-FATRIX Anionic – enables high acceptance with stable feed intake. The special processing masks sensory disadvantages and ensures reproducible integration into the feeding concept.
Practical Implementation in the Feeding Concept
Timing of Use
Start approx. 5–7 days before the expected farrowing date
Target pH
Aim for a urine pH in the range of ~6
Monitoring
Regular pH control for dose adjustment
Acceptance
Stable feed intake as a basic prerequisite
Conclusion: Controlled Urine Acidification as a Feeding Strategy
Targeted urine acidification in sows is not an experimental measure – but an established strategy with measurable effects on metabolic stability, urinary tract health, and farrowing success.
BEWI®-FATRIX Anionic positions itself as a technologically manageable solution that combines high acceptance with reproducible efficacy – for modern sow concepts that focus on prevention rather than intervention.
Technical Consultation
Learn how BEWI®-FATRIX Anionic can be integrated into your sow concepts.
