ISSUE FOCUS FEED & ADDITIVE MAGAZINE January 2026 53 preparations—has been explored. While many of these exhibit partial benefits, their limitations often stem from inconsistent delivery, poor stability, or uncontrolled release within the digestive tract. This has highlighted the need for advanced delivery systems capable of maximizing efficacy while remaining adaptable to commercial conditions. DUAL MICROENCAPSULATION: PRINCIPLES AND ADVANTAGES Dual microencapsulation is an emerging feed additive technology designed to overcome these limitations. Unlike unprotected or single-coated active compounds, dual-layered encapsulation provides a two-phase release mechanism that aligns with the physiological conditions of the gastrointestinal tract. The outer layer, typically composed of functional phytogenic and phycogenic metabolites, can exert antimicrobial, antioxidant, and anti-inflammatory effects in the proximal small intestine, thereby stimulating digestive function and protecting mucosal tissues. A subsequent inner layer, containing organic acids or other antimicrobial molecules, is released later in the intestinal tract where pathogenic challenges are more prevalent. This sequential release confers several advantages: • Protection of sensitive compounds from degradation in the upper digestive tract. • Targeted delivery of actives where their effects are most beneficial. • Reduced variability compared to conventional products that rely on high inclusion levels or unprotected ingredients. • Lower required dosages, minimizing costs and environmental impact while maintaining efficacy. Such systems provide both local benefits, such as microbiota modulation and epithelial barrier support, and systemic outcomes, including improved nutrient utilization and immune function. EVIDENCE FROM FARM TRIALS Field evaluations have provided valuable insights into the practical benefits of dual microencapsulaDual microencapsulation technology Phytogenics & Phycogenics Organic acids Mode of action of dual microencapsulation Inner core release Outer core release No release Stomach Duodenum Jejunum Ileum Colon Feces Effect of dual micro non-encapsulate 0,57 0,58 0,59 0,60 0,61 0,62 0,63 DE AB ADFI kg/d 1 1 1 1 1 1 1 25,0 25,5 26,0 26,5 27,0 27,5 28,0 DE AB BW d42 kg Dual microencapsulation technology Phytogenics & Phycogenics Organic acids Mode of a microenc Outer core rel No release Stomach Duo Je Dual microencapsulation technology Phytogenics & Phycogenics Organic acids Mode of action of dual microencapsulation Inner core release Outer core release No release Stomach Duodenum Jejunum Ileum Colon Feces Effect of dual microencapsulation vs non-encapsulated organic acids 0,57 0,58 0,59 0,60 0,61 0,62 0,63 DE AB ADFI kg/d 1,22 1,23 1,24 1,25 1,26 1,27 1,28 DE AB FCR 25,0 25,5 26,0 26,5 27,0 27,5 28,0 DE AB BW d42 kg
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