Effect of two dosages of prepartum cholecalciferol injection on blood minerals, vitamin D metabolites, and milk production in multiparous dairy cows. A randomized clinical trial.

P.L. Venjakob1,2, L. Bauerfeind3, R. Staufenbiel3, W. Heuwieser1, S. Borchardt1, G.I. Stangl4, F. Hirche4, S.U. Kononov5, M.R. Wilkens5
1Clinic for Animal Reproduction, Faculty of Veterinary Medicine, Freie Universität Berlin, Koenigsweg 65, 14163 Berlin, Germany
2Clinic for Ruminants, Justus-Liebig-University Giessen, 35392 Giessen, Germany
3Ruminant Clinic, Faculty of Veterinary Medicine, Freie Universität Berlin, 14163 Berlin, Germany
4Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
5Institute of Animal Nutrition, Nutrition Diseases and Dietetics, University of Leipzig, 04103 Leipzig, Germany