ISSUE FOCUS FEED & ADDITIVE MAGAZINE June 2024 51 About Sanne van Beers Sanne van Beers holds a Master’s degree in Animal Sciences from Wageningen University in The Netherlands. After which she joined Trouw Nutrition as swine gut health researcher. After 5 years in the research and development department of Trouw Nutrition she moved into a commercial role as product manager in Selko being responsible for technical support of Fibosel® and TNIBetain. matrix value and added 0.02% betaine. Oversupplying methionine didn’t positively affect broilers’ BW and FCR. CONCLUSIONS Trial results confirm that the matrix value observed in the previous betaine study conducted under thermal-neutral conditions is also valid in heat-stress conditions. When evaluating the optimal methyl donor to support bird performance, the trial showed that betaine is a better methyl donor than methionine providing significant positive effects in both thermal-neutral and heat-stress conditions. References 1. Del Vesco, A. P., Gasparino, E., Grieser, D. O., Zancanela, V., Voltolini, D. M., Khatlab, A. S., ... & Neto, A. R. O. (2015). Effects of methionine supplementation on the expression of protein deposition-related genes in acute heat stress-exposed broilers. PLoS One, 10(2), e0115821. 2. Zeitz, J. O., Fleischmann, A., Ehbrecht, T., Most, E., Friedrichs, S., Whelan, R., ... & Eder, K. (2020). Effects of supplementation of DL-methionine on tissue and plasma antioxidant status during heat-induced oxidative stress in broilers. Poultry science, 99(12), 6837-6847.
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