
The key to healthy and high-performing pigs: Liquid feed hygiene & acids
Thanks to the high moisture content and the rich supply of nutrients such as sugar and starch, wet by-products and liquid feed mixtures provide a favorable environment for microbial activity, which requires extra attention. Without careful hygiene management, unwanted microorganisms such as molds, yeasts, and enterococci can multiply rapidly, with negative consequences for feed quality and animal health.
⚠️ Dangers of poor liquid feed hygiene
Loss of dry matter → lower feed conversion
Breakdown of proteins and energy → reduced feed value
Unpleasant odor or taste → poorer feed intake
Increased risk of pathogens → mortality, health issues
🧪 Organic acids: proven protection
Organic acids are an efficient solution for preserving liquid feed and improving hygiene. A synergistic blend works on different levels:
Inhibits the growth of molds, yeasts, and bacteria → consistent feed quality
Stabilizes pH → prevents spoilage
Supports gut health
Improves palatability
Extends shelf life
🔧 Practical application
Good hygiene starts with the intake and storage of by-products. If these are not optimal, organic acids can effectively suppress the growth of unwanted microorganisms, keeping products fresh longer and preserving their nutritional value.
The feed installation also deserves attention: applying acids helps keep tanks and pipes clean, which is crucial for reliable feed quality.
📊 Effectiveness of acids
Acids lower the pH and are also active against unwanted microorganisms, with each acid working slightly differently. Most acids sold on the market are blends of the following active components:
Acid component | Active against mold | Active against yeasts | Active against G- | Active against G+ |
|---|---|---|---|---|
Formic acid | + | ++ | +++ | + |
Propionic acid | ++ | + | ++ | + |
Sorbic acid | +++ | ++ | +++ | ++ |
Benzoic acid | + | ++ | +++ | + |
Acetic acid | 0 | 0 | +++ | + |
Sodium formate | + | ++ | +++ | + |
With Selko products from Trouw Nutrition, we offer proven, solution-oriented synergistic acid blends to extend shelf life and maintain nutritional values in by-products, liquid end mixtures, as well as cleaning the feed system.
By-products & circuit | By-products & circuit | Active against biofilm | Active against enterococci cf. Salmonella | |
|---|---|---|---|---|
Acid concentration in synergistic blend | RSD | RBD | BE+ | fysal |
Formic acid | +++++ | ++++ | ++++ | +++ |
Propionic acid | ++ | +++ | +++ | +++ |
Sorbic acid | + | 0 | + | 0 |
Benzoic acid | 0 | + | + | 0 |
Acetic acid | 0 | 0 | + | ++ |
Sodium formate | 0 | 0 | ++ | +++ |
Standard recommended dosage for by-products: 1.5 – 3 kg/ton
Standard recommended dosage for feed systems: 3 – 5 kg/ton
Do you have questions about acids and their practical application in your by-products or feed system? Our specialists are ready to provide company-specific advice. Feel free to contact us.