Dr. Zaitsev has completed his PhD at the age of 21 years from Moscow State University and postdoctoral studies from Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry (Russia). He is the leading scientist in L.K. Ernst Federal Research Center for Animal Husbandry (Russia). He has 920 publications (2428 citations), including 15 monographs, 12 patents, etc., supervises 22 Ph.D.-students, 100 Magister-students. Selected publications (Q1): 1. Animals 2023, v.13, 852. https://doi.org/10.3390/ani13050852 2. Molecules 2022, v.27, 2278. https://doi.org/10.3390/molecules27072278 3. Animals, 2021, v.11, 2400. https://doi.org/10.3390/ani11082400. Dr. Zaitsev is a member of the Russian Ministry Board of Experts and in various Russian Science Foundations.