Professor Jarbas Miguel da Silva Júnior is an Animal Scientist who graduated from the Garanhuns Academic Unit of the Federal Rural University of Pernambuco (UFRPE), Brazil. He holds both a Master’s and a PhD degree in Animal Science from the Federal University of Viçosa (UFV), Brazil. His research experience includes studies on purine derivatives, nitrogen balance, and nitrogen excretion in beef cattle raised on pasture. He has also conducted research on creatinine recovery in bovine urine under different storage times and temperature conditions. Professor Silva Júnior completed two postdoctoral fellowships at the Federal University of Bahia (UFBA) and at the State University of Mato Grosso do Sul (UEMS), Aquidauana Unit, focusing on ruminant nutrition and production. He has published numerous scientific papers aimed at advancing knowledge in ruminant nutrition, animal production, and product quality. He is currently a Professor at the State University of Western Paraná (UNIOESTE), Brazil.