AUTHOR=Wu Yi , Zhao Pengfei , Li Xiaorui , Huangfu Mingke , Chen Zhimeng , Wang Chunjie , Chen Hao , Chen Aorigele TITLE=Crossbreeding Simmental with Mongolian, and Holstein cattle can improve feed efficiency and energy metabolism by upregulating COX3 and downregulating PRSS2 gene expression JOURNAL=Frontiers in Nutrition VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2025.1524242 DOI=10.3389/fnut.2025.1524242 ISSN=2296-861X