AUTHOR=Ren Chunyan , Bi Yanliang , Tu Yan , Guo Yanli , Bing Rui , Wang Jiqing , Diao Qiyu TITLE=Effect of different levels of neutral detergent fiber in starter diets on the performance, ruminal fermentation, and structural growth of Holstein calves JOURNAL=Frontiers in Veterinary Science VOLUME=Volume 12 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2025.1557732 DOI=10.3389/fvets.2025.1557732 ISSN=2297-1769