ISSUE FOCUS 50 FEED & ADDITIVE MAGAZINE November 2025 let's diet. These VFAs, primarily acetic, propionic, and butyric acids, are absorbed through the intestinal lining and used as an energy source for the animal. In fact, it is estimated that VFAs can provide more than 20% of a piglet's maintenance energy needs. They also play a key role in helping the intestines absorb water and sodium, which is particularly important during the post-weaning period when piglets are at greater risk of dehydration and diarrhoea. Trial findings show that piglets receiving Presan-FX had significantly higher levels of acetic and propionic acid in the caecum and colon compared to the control group (Figure 2). Butyric acid levels were also higher in piglets receiving Presan-FX. Butyric acid supports gut lining health and microbial stability. These results suggest that Presan-FX not only helps supports the gut structure and microbial balance. A healthy gut means the gut is more stable, energy efficient, and resilient. MAINTAINED GUT HEALTH TRANSLATES INTO BETTER PERFORMANCE Producers ultimately want to see improved weight gain and performance. Across multiple trials, Presan-FX has consistently shown benefits in key zootechnical metrics, including ADG, average daily feed intake (ADFI), and feed conversion ratio (FCR). In the 42-day trial, piglets receiving Presan-FX showed im500 450 400 350 300 250 200 150 100 50 0 Average Daily Gain, g/d Pre-starter, d 0-14 203 408 434 340 361 210 Starter, d 14-42 Overall, d 0-42 Control Presan-FX Figure 3. Average daily gain (83% confidence interval as error bars) of weaned piglets that received Presan®-FX from day 0 to 42 post-weaning Average Daily Feed Intake, g/d Pre-starter, d 0-14 800 700 600 500 400 300 200 100 0 249 699 734 549 570 240 Starter, d 14-42 Overall, d 0-42 Control Presan-FX Figure 4. Average daily feed intake (83% confidence interval as error bars) of weaned piglets that received Presan®-FX from day 0 to 42 post-weaning Figure 2. Acetic acid, propionic acid, and butyrate concentration in colon of weaned piglets in negative control, positive control (AGP), or Presan®-FX group for 42 days. Bars with different superscripts (a.b) are significantly different (p < 0.01). VFA Concentration, w/w % Fresh Matter (digesta) 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 Negative control Positive control (AGP) Presan-FX Acetic acid Propionic acid Butyrate 0.14 0.24 0.06 0.11 0.15 0.05 0.08 0.11 b b b ab a a a a a 0.29
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