Career milestones

  • Since 2019: Oberassistent, Clinic for Ruminants, Vetsuisse Faculty, University of Bern, Switzerland
  • 2019: Diplomate of the European College of Bovine Health Management
  • 2018: Privatdozent, Veterinary Faculty, LMU Munich
  • 2017: Habilitation, Thesis title: "Studies on acid-base derangements and potassium balance disorders in neonatal calf diarrhea" (Cumulative thesis on the basis of 10 peer-reviewed publications).
  • 2017: National title: Specialist in bovine medicine (Fachtierarzt für Rinder)
  • 2015-2018: Scholarship of the German Research Foundation
  • 2012-2018: Residency in Bovine Health Management, Clinic for Ruminants with Ambulatory and Herd Health Services, LMU Munich
  • 2011: Dr. med. vet. degree, Veterinary Faculty, Ludwig-Maximilians-Universität (LMU) Munich, Thesis title: "Construction and validation of a decision tree for treating metabolic acidosis in calves with neonatal diarrhea"
  • 2009:  Graduation: Med. vet. degree, Ludwig-Maximilians-Universität (LMU) Munich

 

 

Publikationen

2019

C.K. Lausch, A. Lorch, G. Knubben-Schweizer, A. Rieger, F.M. Trefz. Prognostic relevance of pre- and postoperative plasma L-lactate measurements in calves with acute abdominal emergencies. Journal of Dairy Science 2019, in press

 

C.K. Lausch, A. Lorch, G. Knubben-Schweizer, A. Rieger, F.M. Trefz. Prognostic value of preoperative plasma L-lactate concentrations in calves with acute abdominal emergencies. Journal of Dairy Science 2019, 102:10202–10212.

 

A.A. Megahed, M. Hiew, W. Grünberg, F.M. Trefz, P.D. Constable. Evaluation of the analytical performance of a portable ion-selective electrode meter for measuring whole-blood, plasma, milk, abomasal-fluid, and urine sodium concentrations in cattle. Journal of Dairy Science 2019, 102:7435-7444.

 

P.D. Constable, F.M. Trefz, H. Stämpfli. Effects of pH and the plasma or serum concentrations of total calcium, chloride, magnesium, L‐lactate, and albumin on the plasma ionized calcium concentration in calves. Journal of Veterinary Internal Medicine 2019, 33:1822-1832.

 

 

2018

F.M. Trefz, I. Lorenz, P.D. Constable. Evaluation of a portable ion-selective electrode meter for measuring potassium concentration in whole blood and plasma of calves. The Veterinary Journal 2018, 238: 10-14.

 

F.M. Trefz, I. Lorenz, P.D. Constable. Electrocardiographic findings in 130 hospitalized neonatal calves with diarrhea and associated potassium balance disorders. Journal of Veterinary Internal Medicine 2018, 32: 1447-1461.

 

M.C. Langenmayer, S. Jung, M. Majzoub-Altweck, F.M. Trefz, C. Seifert, G. Knubben- Schweizer, R. Fries, W. Hermanns, N.S. Gollnick. Zinc deficiency-like syndrome in Fleckvieh calves: Clinical and pathological findings and differentiation from bovine hereditary zinc deficiency. Journal of Veterinary Internal Medicine 2018, 32: 853-859.

 

 

2017

F.M. Trefz, I. Lorenz, P.D. Constable. Effects of profound acidemia on the dynamic glucose and insulin response and plasma potassium and phosphorus concentrations during an intravenous glucose tolerance test in neonatal calves. Journal of Dairy Science 2017, 100: 9163-9176.

 

F.M. Trefz, I. Lorenz. Plasma potassium concentrations in neonatal diarrhoeic calves are correlated with serum aldosterone concentrations but not with insulin concentrations. The Veterinary Journal 2017, 230: 41-44.

 

F.M. Trefz, I. Lorenz, A. Lorch, P.D. Constable. Clinical signs, profound acidemia, hypoglycemia, and hypernatremia are predictive of mortality in 1,400 critically ill neonatal calves with diarrhea. Plos One 2017, 12:e0182938.

 

F.M. Trefz, P.D. Constable, I. Lorenz. Effect of intravenous small-volume hypertonic sodium bicarbonate, sodium chloride, and glucose solutions in decreasing plasma potassium concentration in hyperkalemic neonatal calves with diarrhea. Journal of Veterinary Internal Medicine 2017; 31: 907-921.

 

2016

F.M. Trefz, M. Feist, I. Lorenz.  Hypoglycaemia in hospitalised neonatal calves: Prevalence, associated conditions and impact on prognosis. The Veterinary Journal 2016; 217:103-108.

 

 

2015

F.M. Trefz, P.D. Constable, I. Lorenz.  Quantitative physicochemical analysis of acid-base balance and clinical utility of anion gap and strong ion gap in 806 neonatal diarrheic calves.

Journal of Veterinary Internal Medicine 2015; 29:678-687.

 

F.M. Trefz, A. Lorch, J. Zitzl, A. Kutschke, G. Knubben-Schweizer, I. Lorenz.  Risk factors for development of hypokalemia in neonatal diarrheic calves.  Journal of Veterinary Internal Medicine 2015; 29: 688-695.

 

F.M. Trefz, A. Lorch, J. Zitzl, A. Kutschke, G. Knubben-Schweizer, I. Lorenz. Effects of alkalinization and rehydration on plasma potassium concentrations in neonatal calves with diarrhea. Journal of Veterinary Internal Medicine 2015; 29: 696-704.

 

 

2013

F.M. Trefz, P.D. Constable, C. Sauter-Louis, A. Lorch, G. Knubben-Schweizer, I. Lorenz. Hyperkalemia in neonatal diarrheic calves depends on the degree of dehydration and the cause of the metabolic acidosis but does not require the presence of acidemia. Journal of Dairy Science 2013; 96: 7234-7244.

 

F.M. Trefz, A. Lorch, M. Feist, C. Sauter-Louis, I. Lorenz. The prevalence and clinical relevance of hyperkalaemia in calves with neonatal diarrhoea. The Veterinary Journal 2013; 195: 350-356.

 

 

2012

F.M. Trefz, A. Lorch, M. Feist, C. Sauter-Louis, I. Lorenz. Construction and validation of a decision tree for treating metabolic acidosis in calves with neonatal diarrhea. BMC Veterinary Research 2012; 8:238.

 

F.M. Trefz, A. Lorch, M. Feist, C. Sauter-Louis, I. Lorenz. Metabolic acidosis in neonatal calf diarrhoea - clinical findings and theoretical assessment of a simple treatment protocol. Journal of Veterinary Internal Medicine 2012; 26: 162-170.

 

2011

M. Feist, F.M. Trefz. Okuläre Dermoide bei einem Deutsch-Fleckvieh-Kalb. Ein Fallbericht. Tierärztliche Praxis G 2011; 39: 325-329.