ISSUE FOCUS FEED & ADDITIVE MAGAZINE October 2024 51 duction of SCFAs and thus improve feed efficacy. However, the effect of citrus extracts supplementation through the feed can differ a lot, depending on the citrus based product used. Indeed, common citrus extracts used in animal nutrition are not standardized, which can lead to high heterogeneity regarding their effects on animal performance. Nor-Spice AB®, a natural citrus extract to improve feed efficiency, has already proven its efficacy in many species. Through two meta-analyses for pigs and poultry, Nor-Spice AB® has been shown to be an effective and repeatable prebiotic for improving animal growth. In these trials, Nor-Spice AB® increased the average daily gain (ADG) of pigs and poultry by 11.7% (p<0.001) and 5.5% (p<0.01) respectively. In Poultry, 17 trials were conducted under different conditions around the world. For each trial, a control group was compared to a trial group in which the control feed was supplemented with 250 to 400 ppm Nor-Spice AB®. In Pigs, 10 trials were conducted and confirmed the positive effects of Nor-Spice AB® in piglets. Each trial had 2 groups of piglets, one group received a standard diet and the other group received the same standard diet supplemented with 250 ppm Nor-Spice AB®. References are available upon request. About Julia Laurain Julia Laurain graduated as an Agricultural Engineer (Msc) in 2008 from ENSAIA in Nancy (France). She began her career in Valorex, where she started to develop her skills in dairy nutrition and project leading in France and during a mission in US with Stonyfield Farm. In 2012, she joined Olmix group, first as a mycotoxin risk product manager for North Europe before managing the animal care technical team in Europe. From 2017 to 2022 she held the global position of Mycotoxin Risk product manager. In June 2022 she joined Nor-Feed marketing team as Product Manager, since September 2022 she has been managing the marketing service including product strategy and communication.
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