Supplementing Monensin and Rumen Undegradable Protein to Late-Gestation Heifers Artificial Insemination of Beef Heifers with Multi-Sire Semen Book traversal links for Cow-Calf Nutrition, Reproduction, and Management ‹ Acknowledgements Up Supplementing Monensin and Rumen Undegradable Protein to Late-Gestation Heifers ›