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Meet Dr. Mercedes Vázquez-Añón, Senior Director, Animal Nutrition Research and Facilities


Visit us at the upcoming AFMA Forum 2020 and meet Dr. Mercedes Vázquez-Añón, Senior Director, Animal Nutrition Research and Facilities for Novus International, Inc. In this role, she directs monogastric and ruminant nutrition and physiology research activities and facilities, which are geared to provide globally recognized research with differentiated solutions that support current products and the development of new products. In addition, she is responsible for nutrition research teams across production species internationally.

Her research expertise encompasses the disciplines of nutrition, physiology and metabolism of sulfur amino acids, trace minerals, antioxidants and dietary enzymes. She holds 9 patents of different technologies and travels extensively to give presentations at nutritional conferences, scientific forums and customer events in Latin America, Europe, Asia, North America and she has published more than 30 refereed scientific articles and more than 100 abstracts, technical reports and articles in conferences proceedings and popular press articles.

Mercedes will be presenting at AFMA where she will be discussing Trypsin inhibitors (TI) and urease activity (UA).

Trypsin inhibitors (TI) and urease activity (UA) are two of the most relevant quality measurements for soybean products as feed ingredients for animals. TI were reported to be correlated with UA, so feed processing plants use UA as indicator of TI in soybean meal (SBM). The objectives of this study were to determine the levels of TI and UA in 414 SBM samples from 19 different countries from 5 world areas, and to validate whether TI and UA are correlated. TI in solvent-extracted SBM were 2-6 mg/g with 80% of them 3-5 mg/g. UA was 0.01-0.20 pH unit with 98% of them ≤ 0.1 pH unit. TI and UA results varied by country and world area. By country, TI were highest in Germany, UA was highest in India, both TI and UA were high in South Africa. By world area, both TI and UA were high in Africa, TI were low in Asia and North America, UA was low in Europe and Latin America. Full-fat-extruded-SBM, heat-inactivated full-fat SBM and expeller-SBM had higher TI than solvent-extracted SBM. TI were poorly correlated with UA in solvent-extracted SBM samples, suggesting that UA should not be used as a surrogate indicator for TI content in soybean products.


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