Dietrich H. Volkmann
Teaching Professor

• BVSc, University of Pretoria, South Africa
• MMed Vet, University of Pretoria, South Africa
  
  
• Diplomate, American College of Theriogenologists
  

Teaching:  Theriogenology

Clinical Interests:  Clinical reproduction in all species

Research Interests:

• Reproductive management of canine breeding colonies for research on heritable disorders
• Induction of synchronous estrus in bitches
• Management of equine abortion   
  
  

Previous research has focused on equine semen preservation and artificail insemination, the development of frozen semen artificial insemination in dogs and peri-partal placental function in horses.

Selected publications:

Volkmann DH, Sent W, Riddle WT, Little TV, Durenberger J, Potenza K, Sibley, L, Roser JF.  Hormone profiles of mares affected by the Mare Reproductive Loss Syndrome.  Reprod Dom Anim.  (In press).

Volkmann DH, Kutzler MA, Wheeler R, Krekeler N.  The use of deslorelin implants for the synchronization of estrous in diestrous bitches. Theriogenology. 2006; 66(6-7):1497-501.

Volkmann DH, Kutzler MA, Wheeler R, Krekeler N, Klewitz J, Lamb SV.  Failure of hCG to support luteal function in bitches after estrus induction usingdeslorelin implants.  Theriogenology. 2006; 66(6-7):1502-06.

Volkmann DH. The effects of storage time and temperature and anticoagulant on laboratory measurements of canine blood progesterone concentrations.  Theriogenology. 2006; 66(6-7):1583-86.

Santos NR, Krekeler N, Schramme-Jossen A, Volkmann DH. The knobbed acrosome defect in four closely related dogs.  Theriogenology. 2006; 66(6-7):1626-28.

Asa CS, Bauman K, Callahan P, Bauman J, Volkmann DH, Jöchle W.  GnRH-agonist induction of fertile estrus with either natural mating or artificial insemination, followed by birth of pups in gray wolves (Canis lupus). Theriogenology. 2006; 66(6-7):1778-82.

Kutzler MA, Solter PF, Hoffman WE, Volkmann DH. Characterization and localization of alkaline phosphatase in canine seminal plasma and gonadal tissues. Theriogenology. 2003; 60(2):299-306.

Schulman ML, Gerber D, Nurton J, Guthrie AJ, Joubert K, Volkmann DH. Effects of halothane anaesthesia on the cryopreservation of epididymal spermatozoa in pony stallions. Equine Vet J. 2003; 35(1):93-95.  [No abstract available].

Olivier A, Lane E, Volkmann DH, Hofmeyr M, Stegmann GF. Rectal prolapse associated with a healed pelvic fracture in a pregnant free-ranging African black rhinoceros (Diceros bicornis). Part 2: surgery and necropsy. J S Afr Vet Assoc. 2001; 72(4):242-44.

Stegmann GF, Hofmeyr M, Olivier A, Lane E, Volkmann DH. Rectal prolapse associated with a healed pelvic fracture in a pregnant free-ranging African black rhinoceros (Diceros bicornis). Part 1: Anaesthesia.  J S Afr Vet Assoc. 2001; 72(4):239-41.

Volkmann DH, Williams JH, Henton JH, Donahue JM, Williams NM.  The first reported case of equine nocardioform placentitis in South Africa.  J S Afr Vet Assoc. 2001; 72(4):235-38.  

Lewis BD, Penzhorn BL, Volkmann DH. Could treatment of pregnant mares prevent abortions due to equine piroplasmosis?  J S Afr Vet Assoc. 1999; 70(2):90-91.

Irons PC, Nöthling JO, Volkmann DH.  Failure of luteolysis leads to prolonged gestation in a bitch: a case report. Theriogenology. 1997; 48(3):353-59.

Nöthling JO, Gerstenberg C, Volkmann DH.  Semen quality after thawing: correlation with fertility and fresh semen quality in dogs. J Reprod Fertil Suppl. 1997; 51:109-16.

Paweska JT, Volkmann DH, Barnard BJ, Chirnside ED.  Sexual and in-contact transmission of asinine strain of equine arteritis virus among donkeys. J Clin Microbiol. 1995; 33(12):3296-99.