INTERVIEW 38 FEED & ADDITIVE MAGAZINE April 2022 About Jeanine de Nysschen Jeanine de Nysschen is the Global Product Manager of Selko-pH with a Master of Agricultural Science degree in Animal Science: Production Physiology and Product Quality and Bachelor’s degree in Animal Science from the University of Pretoria in South Africa. During her professional career she gained on-farm experience and knowledge on animal nutrition and feed additives aimed at controlling Salmonella, reducing the use of antibiotics, and improving production efficiency. high ZnO treatments. The LZ+PH animals also had higher ADG (+14 g/d and +22 g/d) compared to piglets receiving high doses of ZnO. Were there any performance factors noticed in the studies? Survivability is always a concern, and mortality among different groups showed some differences. At the end of three weeks, piglets receiving the highzinc diet had the highest mortality rate, whereas both groups receiving the combination of high- or low-zinc along with the acidifier had lower levels of mortality. What is a final summary from the trials? Setting piglets up for long-term performance without zinc oxide, AGPs or antibiotics demands an integrated strategy including feed, farm, and health management. However, these trials demonstrate the value that Selko-pH brings to the post-weaning diets of piglets. The results of these studies show that acidification can be an effective alternative to adding high levels of zinc oxide to piglet diets. Figure 3. Average daily gain (ADG) and of average daily feed intake (ADFI) of weaned piglets, weeks 1-6 post-weaning High dose of zinc oxide (ZnO) in feed and no water acidifier (LZ), low dose of ZnO in feed and no water acidifier (LZ), high dose of ZnO in feed and Selko-pH in water (HZ+PH), low dose of ZnO in feed and Selko-pH in water (LZ+PH). Data of two studies. Columns with superscripts (a,b) are significantly different (p<0.05), and with superscripts (x,y) tend to be different (p=0.06).
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