PD Dr. med. vet. Harald Michael Hammon

hammon@fbn-dummerstorf.de

Research Institute for Farm Animal Biology (FBN)
Head of working group Metabolic Health
Wilhelm-Stahl-Allee 2
18196 Dummerstorf

Research interests

Metabolic and endocrine regulation of growth, development and energy metabolism in cattle
Dairy nutrition (calf, cow)

Curriculum Vitae

04/2004-present:
Senior Scientist and deputy head at the Institute of Nutritional Physiology (“Oskar-Kellner)”, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany; Head of the Endocrine Metabolic Regulation Unit
04/1998-03/2004: Scientist at the Division of Nutrition Pathology, Institute of Animal Breeding, University of Bern, Switzerland
12/2003: Habilitation in Animal Physiology at the University of Bern, Venia docendi for Animal Physiology
09/2001-05/2002: Residence at the Department of Animal Science, Purdue University, IN, US
01/1994-03/1998: Post Doc at the Division of Nutrition Pathology, Institute of Animal Breeding, University of Bern, Switzerland
02/1993-12/1993: Veterinary practice (large animals), Feuchtwangen, Germany
04/1991-12/1992: Doctoral Thesis at the Division of Nutrition Pathology, Institute of Animal Breeding, University of Bern, Switzerland
09.01.1991: Approbation as veterinary doctor
1985-1990: Study of veterinary medicine at the Ludwig-Maximilian-University of Munich

Teaching

Physiology and anatomy in farm animals and metabolic performance at the Faculty of Agricultural and Environmental Sciences (AUF), University of Rostock

Publications

Liermann, W.; Vogel, L.; Gnott, M.; Dannenberger, D.; Reyer, H.; Trakooljul, N.; Mielenz, M.; Starke, A.; Tröscher, A.; Hammon, H. M. (2026):

Influences of an abomasal fatty acid supplementation during late gestation and early lactation on the jejunal fatty acid composition, barrier function and adherent microbiota in dairy cows

Wendy Liermann, Dirk Dannenberger, Henry Reyer, Manfred Mielenz, Harald Michael Hammon

Journal of Dairy Science 109 (5): 5216-5230

https://doi.org/10.3168/jds.2025-27870

Xiao, C.; Albrecht, E.; Hammon, H. M.; Maak, S. (2026):

The Effects of Supplemented Conjugated Linoleic Acid on Lipid Metabolism in Cattle

Cheng Xiao, Elke Albrecht, Harald Michael Hammon, Steffen Maak

Animals 16 (4): 550, 1-23

https://doi.org/10.3390/ani16040550

Michelotti, T. C.; Imbert, A.; Veshkini, A.; Durand, G.; Hammon, H. M.; Bonnet, M. (2025):

Expression of free fatty acids receptors in the liver of periparturient dairy cows supplemented with essential fatty acids and CLA

Harald Michael Hammon

JDS Communications 7 (2): 278-283

https://doi.org/10.3168/jdsc.2025-0867

Hammon, H. M.; Bachmann, L.; Vogel, L.; Gnott, M.; Kröger-Koch, C.; Görs, S.; Tröscher, A.; Starke, A. (2025):

The interaction of essential fatty acids and conjugated linoleic acid on regulation of milk synthesis and the formation of milk ingredients from [13C6]-glucose during early lactation in dairy cows

Harald Michael Hammon, Lisa Bachmann, Claudia Kröger-Koch, Solvig Görs

Journal of Dairy Science 109 (3): 3034-3047

https://doi.org/10.3168/jds.2025-27530

Ghaffari, M. H.; Hammon, H. M.; Koch, C. (2025):

Early Rumen Development in Calves: Biological Processes and Nutritional Strategies – A Mini Review

Harald Michael Hammon

JDS Communications 6 (3): 427-431

https://doi.org/10.3168/jdsc.2024-0702

Veshkini, A.; Kühn, C.; Dengler, F.; Bachmann, L.; Liermann, W.; Helm, C.; Ulrich, R.; Delling, C.; Hammon, H. M. (2024):

Cryptosporidium parvum infection alters the intestinal mucosa transcriptome in neonatal calves: impacts on epithelial barriers and transcellular transport systems

Lisa Bachmann, Wendy Liermann, Harald Michael Hammon

Frontiers in Cellular and Infection Microbiology 14: 1495309, 1-11

https://doi.org/10.3389/fcimb.2024.1495309

Veshkini, A.; Hammon, H. M.; Vogel, L.; Viala, D.; Delosière, M.; Tröscher, A.; Déjean, S.; Ceciliani, F.; Sauerwein, H.; Bonnet, M. (2024):

The skimmed milk proteome of dairy cows is affected by the stage of lactation and by supplementation with polyunsaturated fatty acids

Harald Michael Hammon

Scientific Reports 14: 23990, 1-14

https://doi.org/10.1038/s41598-024-74978-1

Xiao, C.; Albrecht, E.; Dannenberger, D.; Kong, W.; Gu, H.; Hammon, H. M.; Maak, S. (2024):

Effects of Supplementation with Essential Fatty Acids and Conjugated Linoleic Acids on Muscle Structure and Fat Deposition in Lactating Holstein Cows

Cheng Xiao, Elke Albrecht, Dirk Dannenberger, Harald Michael Hammon, Steffen Maak

Agriculture 14: 1720, 1-18

https://doi.org/10.3390/agriculture14101720

Veshkini, A.; Dengler, F.; Bachmann, L.; Liermann, W.; Helm, C.; Ulrich, R.; Delling, C.; Kühn, C.; Hammon, H. M. (2024):

Cryptosporidium parvum infection alters the intestinal mucosa transcriptome in neonatal calves: implications for immune function

Lisa Bachmann, Wendy Liermann, Harald Michael Hammon

Frontiers in Immunology 15: 1351427, 1-12

https://doi.org/10.3389/fimmu.2024.1351427

Bachmann, L.; Weber, L.; Liermann, W.; Hammon, H. M.; Delling, C.; Dengler, F.; Schaufler, K.; Schwabe, M.; Eger, E.; Becker, K.; Schütz, A.; Homeier-Bachmann, T. (2024):

Colostrum as a source of ESBL-Escherichia coli in feces of newborn calves

Lisa Bachmann, Wendy Liermann, Harald Michael Hammon

Scientific Reports 14: 9929, 1-11

https://doi.org/10.1038/s41598-024-60461-4

Veshkini, A.; Gnott, M.; Vogel, L.; Kröger-Koch, C.; Tuchscherer, A.; Tröscher, A.; Bernabucci, U.; Trevesi, E.; Starke, A.; Mielenz, M.; Bachmann, L.; Hammon, H. M. (2023):

Abomasal infusion of essential fatty acids and conjugated linoleic acid during late pregnancy and early lactation affects immunohematological and oxidative stress markers in dairy cows

Manfred Mielenz, Lisa Bachmann, Harald Michael Hammon

Journal of Dairy Science 106 (7): 5096-5114

https://doi.org/10.3168/jds.2022-22514

Dengler, F.; Hammon, H. M.; Liermann, W.; Görs, S.; Bachmann, L.; Helm, C.; Ulrich, R; Delling, C. (2023):

Cryptosporidium parvum competes with the intestinal epithelial cells for glucose and impairs systemic glucose supply in neonatal calves

Harald Michael Hammon, Wendy Liermann, Solvig Görs, Lisa Bachmann

Veterinary Research 54: 40, 1-16

https://doi.org/10.1186/s13567-023-01172-y

Liermann, W.; Tümmler, L.-M.; Kuhla, B.; Viergutz, T.; Hammon, H. M. (2023):

Effects of rumen cannulation combined with different pre-weaning feeding intensities on the intestinal, splenic and thymic immune system in heifer calves several month after surgery

Wendy Liermann, Björn Kuhla, Harald Michael Hammon

Frontiers in Immunology 11: 1160935, 1-14

https://doi.org/10.3389/fimmu.2023.1160935

Veshkini, A.; Ceciliani, F.; Bonnet, M.; Hammon, H. M. (2023):

Review: Effect of essential fatty acids and conjugated linoleic acid on the adaptive physiology of dairy cows during the transition period

Harald Michael Hammon

animal 17: 100757, 1-12

https://doi.org/10.1016/j.animal.2023.100757

Ghaffari, M. H.; Monneret, A.; Hammon, H. M.; Post, W.; Müller, U.; Frieten, D.; Gerbert, C.; Dusel, G.; Koch, C. (2022):

Deep convolutional neural networks for the detection of diarrhea and respiratory disease in preweaning dairy calves using data from automated milk feeders

Harald Michael Hammon

Journal of Dairy Science 105 (12): 9882-9895

https://doi.org/10.3168/jds.2021-21547

Becker, D.; Heimes, A.; Hadlich, F.; Hammon, H. M.; Meyerholz, M. M.; Petzl, W.; Zerbe, H.; Schuberth, H.-J.; Hoedemaker, M.; Schmicke, M.; Engelmann, S.; Kühn, C. (2022):

Allele-biased expression of the bovine APOB gene associated with the cholesterol deficiency defect suggests cis-regulatory enhancer effects of the LTR retrotransposon insertion

Doreen Becker, Harald Michael Hammon

Scientific Reports 12: 13469, 1-14

https://doi.org/10.1038/s41598-022-17798-5

Veshkini, A.; Hammon, H. M.; Vogel, L.; Viala, D.; Delosière, M.; Tröscher, A.; Déjean, S; Ceciliani, F.; Sauerwein, H.; Bonnet, M. (2022):

Plasma proteomics reveals crosstalk between lipid metabolism and immunity in dairy cows receiving essential fatty acids and conjugated linoleic acid

Harald Michael Hammon

Scientific Reports 12: 5648, 1-12

https://doi.org/10.1038/s41598-022-09437-w

Veshkini, A.; Hammon, H. M.; Lazzari, B.; Vogel, L.; Gnott, M.; Tröscher, A.; Vendramin, V.; Sadri, H.; Sauerwein, H.; Ceciliani, F. (2022):

Investigating circulating miRNA in transition dairy cows: What miRNAomics tells about metabolic adaptation

Harald Michael Hammon

Frontiers in Genetics 13: 946211, 1-20

https://doi.org/10.3389/fgene.2022.946211

Riosa, R.; Ghaffari, M. H.; Hammon, H. M.; Süß, R.; Hoelker, M; Drillich, M.; Parys, C.; Guyader, J.; Sauerwein, H.; Iwersen, M. (2022):

Identification and characterization of dairy cows with different backfat thickness antepartum in relation to postpartum loss of backfat thickness: A cluster analytic approach

Harald Michael Hammon

Journal of Dairy Science 105 (7): 6327-6338

https://doi.org/10.3168/jds.2021-21434

Liermann, W.; Wissing, K. L.; Reyer, H.; Trakooljul, N.; Dannenberger, D.; Tröscher, A.; Hammon, H. M. (2022):

Maternal Conjugated Linoleic Acid Supply in Combination With or Without Essential Fatty Acids During Late Pregnancy and Early Lactation: Investigations on Physico-Chemical Characteristics of the Jejunal Content and Jejunal Microbiota in Neonatal Calves

Wendy Liermann, Henry Reyer, Dirk Dannenberger, Harald Michael Hammon

Frontiers in Veterinary Science 9: 839860, 1-9

https://doi.org/10.3389/fvets.2022.839860