Animal Industry Report AS 660 ASL R2877 2005 Direct-Fed Microbials Decreases Dry Mater Intake and Increases Feed Efciency When Fed to Lactating Holstein Dairy Cows Mathew R. O'Neil Iowa State University, maoneil@iastate.edu Mohamed Osman Iowa State University Eric D. Testroet Iowa State University, etestroe@iastate.edu Wanda Kreikemeier Nutrition Physiology Company Douglas Ware Nutrition Physiology Company See next page for additional authors Tis Dairy is brought to you for free and open access by the Animal Science Research Reports at Iowa State University Digital Repository. It has been accepted for inclusion in Animal Industry Report by an authorized editor of Iowa State University Digital Repository. For more information, please contact digirep@iastate.edu. Recommended Citation O'Neil, Mathew R.; Osman, Mohamed; Testroet, Eric D.; Kreikemeier, Wanda; Ware, Douglas; and Beitz, Donald C. (2014) "Direct- Fed Microbials Decreases Dry Mater Intake and Increases Feed Efciency When Fed to Lactating Holstein Dairy Cows," Animal Industry Report: AS 660, ASL R2877. DOI: htps://doi.org/10.31274/ans_air-180814-1162 Available at: htps://lib.dr.iastate.edu/ans_air/vol660/iss1/42