ARTICLE 62 FEED & ADDITIVE MAGAZINE May 2023 as an important amino acid metabolism reshaping is happening at the gut level. The requirement in arginine increases and the risk of shortage is real (Wu and Knabe, 1995). The systemic inflammation and associated infections sometimes related to the weaning (challenging conditions and environmental stress) lead to an increase in tryptophane, cystine and methionine as well as threonine (Trevisi et al., 2012; Rahhshandeh et al., 2019; Trevisi et al.,2015; Jayaraman, 2019). At the same time, piglet diets evolve toward a reduction of the crude protein content but with the producer goal of maintaining animal growth performance. To achieve this goal, it is crucial to use highly digestible protein sources which help reduce the crude protein content of the diet while maintaining the digestible protein level associated with high functionalities for the animal. During this specific period, nutritionists are looking for highly digestible protein sources with fast kinetics of protein absorption, which supply free primary and secondary amino acids. YELA PROSECURE helps manage dietary amino acids to optimize intestinal homeostasis, which is essential during stressful periods. • Preference trial in pets: Some free amino acids are also involved in the mechanism of taste and eating behavior including feed intake, therefore playing a role in feed appetibility. In a trial conducted in the Netherlands with 40 adult medium size dogs, the consumption of the diet including YELA PROSECURE was significantly higher by 26% (P=0.054) than the control diet. YELA PROSECURE has shown the potential to enhance petfood appetibility, likely related to the high natural content in specific free amino acids. CONCLUSION Hydrolyzed yeasts are a promising and innovative functional protein source to consider, mainly driven by the free amino acids and the small peptides obtained from the cracking process of the protein. When the hydrolysis process is controlled, yeast bring a standardized profile of free amino acids, which plays a positive role in the maintenance of animal gut health, contributing to the feed protein balance and enhancing feed appetibility. This is particularly of interest when applied to the diets of young animals. References available upon request. To learn more about YELA PROSECURE and its protein digestibility kinetics, download our technical article! About Bruno Bertaud Graduated from a 5-year degree (Master level) delivered by Toulouse Agriculture School (France), Bruno started his career as swine nutritionist during 4 years for a French leader feed meal company. In charge of R&D activities for swine nutrition, he was managing trials in both experimental and commercial farms and valorizing results into nutritional innovations and solutions. Bruno has been responsible for Yeast Derivatives Products management within Lallemand Animal Nutrition for 6 years before moving to transversal technical management and swine application.
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