Bruce William Christensen, DVM, MS, DACT
Veterinary Clinical Sciences
Dr. W. Eugene and Linda Lloyd Veterinary Medical Center
Iowa State University
1600 South 16th Street
Ames, Iowa 50011-1250
Phone: (515) 294-1500; (515) 294-1246
Fax: (515) 294-5224
Birth date: July 9, 1973
Birth place: Pocatello, Idaho, USA
Social Security #: 601-28-9073
Spouse: MeLissa Ciprich Christensen
Children: Parker Corvin Christensen, birthday February 19, 2006
Education: Masters in Science May 2007
College of Veterinary Medicine, University of Florida
Diplomate, American College of Theriogenology August 2006
Passed qualifying examination in St. Paul, MN
Resident of Theriogenology July 2003-July 2006
College of Veterinary Medicine, University of Florida, Gainesville, FL
Doctor of Veterinary Medicine May 2002
College of Veterinary Medicine, Cornell University, Ithaca, NY
Bachelor of Science with Honors August 1998
Major: Conservation/Wildlife Biology
College of Biology and Agriculture, Brigham Young University, Provo, UT
Assistant Professor June 2008-Present
Iowa State University (Ames, Iowa)
Clinical reproduction in all domestic species (50%)
Teaching in both clinical rotations and didactic courses for veterinary students (25%)
Committee work (5%)
Visiting Professor 2006-present
Szent Istvan Egyetem (St. Stephens University; Budapest, Hungary)
Didactic lectures in canine and equine reproduction given once a year
Visiting Professor August 2007-June 2008
Saint Matthews University (Grand Cayman, Cayman Islands)
Periodic visits to teach didactic course in equine and canine reproduction to
Senior Veterinarian September 2007-February 2008
Goulburn Valley Equine Hospital (Victoria, Australia)
Equine reproduction, advanced reproductive techniques, all aspects of mare and
stallion breeding management, infertility, and reproductive tract disease.
Management of equine stud farms and hospital embryo transfer recipient herd.
Clinician September 2006-July 2007
University of Florida
Companion animal reproduction (equine & small animal): all aspects of breeding
management, infertility, and reproductive tract disease.
Training of senior veterinary students on clinical thinking and techniques.
Resident of Theriogenology July 2003-July 2006
University of Florida
Training in all aspects of equine and canine theriogenology in preparation to pass the
ACT board exam.
Equine: high-risk pregnancy, dystocia, placentitis, infertility, semen
collection/preservation, breeding management, embryo transfer, breeding soundness.
Canine: breeding management, semen preservation, infertility, dystocia, reproductive
surgery, prostate and mammary disease
Residency research and Masters project: Hormone concentrations in male
rhinoceros: seasonal, age, and sociosexual variations.
Instruction of veterinary students in lectures, labs, and clinical rotations.
Presentation of reproductive seminars to college faculty and staff.
Reproductive Physiology Extern (4 weeks) Feb/Mar 2002
White Oak Conservation Center, Yulee, FL
Ran assays in an enzyme immunoassay lab comparing fecal corticoid levels in
pregnant okapi with progesterone levels.
Analyzed the data and presented the results to faculty and staff.
Zoo Veterinary Extern (6 weeks each location) Jan./Feb; Mar/Apr 2002
Supervisors: Holly Reed, DVM; Barbara Wolfe, DVM, PhD, DACZV
Point Defiance Zoo and Aquarium, Tacoma, WA
North Carolina Zoo, Asheboro, NC
Assisted in daily veterinary procedures and rounds.
Rotated between different animal areas working with keeper staff.
Hungarian Language and Culture Instructor September 1994-June 1996
Missionary Training Center, Brigham Young University
Taught Hungarian language and culture course to university-age men and women in
preparation for their 2 year missionary service in Hungary.
Hungarian Missionary July 1992-July 1994
Served as a missionary for the Church of Jesus Christ of Latter-day Saints in
Taught people interested in the Church about basic religious tenets.
Assisted in English classes to school groups.
Volunteered work time in local hospitals and orphanages.
Publications and abstracts
Christensen BW, Troedsson MHT, Young LJ, Oliva M, Penfold LM. Effects of
sociosexual environment on serum testosterone in captive male African rhinoceros.
Theriogenology; 2009; In Press, Corrected Proof.
Christensen BW, Ernst N, Powe JR, Pozor MA, Milton AJ, Reinhard MK.
Theriogenology Question of the Month: Bilateral seminoma in a stallion. JAVMA
Christensen BW, Troedsson MHT, Roberts JF, Pozor MA, Eichelberger AC.
Theriogenology Question of the Month: High-risk equine pregnancy with vaginal
varicose vein hemorrhage and norcardioform placentitis. JAVMA 2006, 228
Christensen BW, Roberts JF, Pozor MA, Giguere S, Sells SF, Donahue JM.
Nocardioform placentitis with isolation of Amycolatopsis sp. in a Florida-bred mare.
JAVMA 2006 228 (8): 1234-1239.
Christensen BW, Troedson MHT, Murchie TA, Pozor MA, Macpherson ML, Estrada
AH, Carrillo NA, Mackay RJ, Roberts GD, Langlois J. Management of hydrous
amnion in a Thoroughbred mare resulting in successful foaling. JAVMA 2006, 228
Christensen BW, Troedsson MHT, Oliva M, Young LJ, Penfold LM. Effects of age
and season on serum testosterone of captive male African rhinoceros. (In prep).
Newkirk ES, Christensen BW, Onclin K. Sry-negative XX sex reversal in a Pug dog.
JAVMA (in press).
Christensen BW, Troedsson MHT, Oliva M, Hernandez J, Macpherson ML, Pozor
MA, Penfold LM. 2004. Influences of age, time of year, and female presence on
serum testosterone concentration in captive black rhinoceros (Diceros bicornis).
Advances in Ethology. Suppl. To Ethology. 38:97. (Note: versions of this abstract
also appeared in the 2004 conference proceedings for the American Association of
Zoo Veterinarians and the Society for Theriogenology).
Christensen BW, Oliva M, Andra K, Penfold L. 2003. Non-invasive monitoring of
stress in non-pregnant and pregnant okapi (Okapia johnstoni). American
Association of Zoo Veterinarians conference proceedings, Minneappolis, MN.
Christensen BW, Bauman K, Junge R, Van Sandt L, Ellinwood M, Jens J, Asa C.
Comparative sperm longevity between Gray Wolves (Canis lupus) and domestic
dogs (Canis familiaris).
Christensen BW, Wong D, McClure S, Riedesel E, Whitley D, Danielson J. Clinical
aptitude in new equine veterinary graduates before and after implementation of
diagnostic skills course.
Christensen BW, Oliva M, Penfold LM. Early capacitation-like changes in
electroejaculated sperm from okapi (Okapia johnstoni).
Christensen BW, Meyers-Wallen VN. Sex Determination and Differentiation. In
Equine Reproduction. AO McKinnon (ed). Blackwell Publishing Limited. 2009.
Christensen BW. Estrogens. In Equine Reproduction. AO McKinnon (ed).
Blackwell Publishing Limited. 2009.
Christensen BW. Parturition. In Equine Reproduction. AO McKinnon (ed).
Blackwell Publishing Limited. 2009.
Troedsson MHT, Christensen BW. Alterations in Sexual Function. In Large Animal
Medicine. BP Smith (ed). St Louis, MO. Mosby. 2008.
Troedsson MHT, Christensen BW. Diseases of the Reproductive System. In Large
Animal Medicine. BP Smith (ed). St Louis, MO. Mosby. 2009.
USDA Higher Education Challenge (HEC) Grants Program, $138,099, July 2009-
June 2011. “New course in equine diagnostic skills”
Scott and Nancy Armbrust grant for equine embryo transfer and teaching at ISU;
$20,000; January 2009
Iowa State University Foreign Travel Grant; $681.00; September 2009
ISU SCAVMA Teaching Excellence Award in Clinical Sciences, Iowa State
First place in Dr. Jerry Rains Memorial Abstract Competition for residents and
graduate students at 2004 Society for Theriogenology conference.
First place in Safe-Capture International Inc. 2004 American Association of Zoo
Veterinarians poster competition, conservation section.
Student chapters of the Society for Theriogenology
Mentored students at Iowa State University in forming the Iowa State Student
Chapter of the Society for Theriogenology in July 2008. This was the first student
chapter of the SFT in Iowa. Our first year we had 140 members, making us the
largest student chapter in the SFT. Nine students attended the SFT meeting in 2009,
one of whom presented a case in the student competition. Our activities and
speakers included the following:
Equine castration lab, August 2008
Dirk Vanderwall, DVM, PhD, DACT, University of Idaho, Equine cloning,
Cheryl Asa, PhD, St. Louis Zoo, Breeding programs of the Mexican Gray Wolf,
Bruce Christensen, DVM, MS, DACT, Equine fetal sexing, November 2008
Frances Smith, DVM, PhD, DACT, Smith Veterinary Hospital (Minneapolis,
MN), Ethics of purebred dog breeding, March 2009
Reed Holyoak, DVM, PhD, DACT, Oklahoma State University, Infectious
equine infertility, October 2009.
Dennis Schmitt, DVM, PhD, DACT, Missouri State University, Elephant
reproduction. November 2009.
Mentored students at the University of Florida in forming the Florida Student
Chapter of the Society for Theriogenology (FSC-SFT) in January 2005. This was
the first student chapter of the SFT in Florida. I actively helped in the planning and
implementation of numerous wet labs and speakers. Our activities and speakers
included the following:
Bovine ET wet lab, February 2006, and scheduled for February 2007
Stallion semen freezing wet lab, scheduled for September 2006
Bull BSE wet lab, October 2005, and scheduled for October 2006
Equine reproductive ultrasound wet lab, September 2005
Canine breeding management short course, September 2005
Monthly lunch time case presentation rounds with faculty
Ahmed Tibary, DVM, PhD, DACT, Washington State University, Pregnancy
management in small ruminants, scheduled for Fall 2007
Veterinary Student Case Presentations
Eric Behlke, ISU Class of 2010, Artificial vagina induced circumferential preputial
avulsion in the bovine, Student Case Presentation Competition Finalist: 2nd place,
SFT Annual Conference, Albuquerque, NM, August 2009.
Aleisha Nesset, ISU Class of 2009, Uterus Unicornis, Grand Rounds presentation,
Megan Schmidt, ISU Class of 2009, Ectopic Ureter in a Dog, Grand Rounds
presentation, January 2009
Corey Gallagher, ISU Class of 2010, Lymphoma misidentified as vaginal prolapse
in a bitch, submitted to the Student Case Presentation Competition, SFT Annual
Conference, Albuquerque, NM, August 2009.
Sherry Johnson, ISU Class of 2012, Testicular malignant mesothelioma, submitted
to the Student Case Presentation Competition, SFT Annual Conference,
Albuquerque, NM, August 2009.
Emily Buss, ISU Class of 2009, Surgical approaches of cesarean section in bovine,
submitted to the Student Case Presentation Competition, SFT Annual Conference,
Albuquerque, NM, August 2009.
Jennifer Taylor, ISU Class of 2009, Uterine torsions in dairy cattle: a comparison of
three cases using three different treatments, submitted to the Student Case
Presentation Competition, SFT Annual Conference, Albuquerque, NM, August
Viktoriya Zilberman, ISU Class of 2009, Uterine incontinence due to intersex
condition in a dog, submitted to the Student Case Presentation Competition, SFT
Annual Conference, Albuquerque, NM, August 2009.
Courtney Riley, UF Class of 2007: 1st place Student Case Presentation, Medical
Treatment of a Kerry Blue Terrier with Prostatitis and Poor Sperm Quality, SFT
Annual Conference, St. Paul, MN, August 2006.
Erin Sellers Newkirk, UF Class of 2007: 3 rd place Student Case Presentation, Sry-
negative sex reversal in a Pug, SFT Annual Conference, St. Paul, MN, August 2006.
Tonya Stephens, UF Class of 2009: 4th place Student Case Presentation, Bilateral
Seminoma in a Stallion, SFT Annual Conference, St. Paul, MN, August 2006.
Erin Sellers Newkirk, UF Class of 2007: 3rd place Student Case Presentation,
Hemorrhagic Vulvar Discharge in a Pregnant Bitch, SFT Annual Conference,
Charleston, SC, August 2005.
Ashley Mounts, UF Class of 2006: Senior Veterinary Student Research Project,
Influence of Housing Variation on Serum Cortisol Concentration in Captive Male
White Rhinoceros (Ceratotherium Simum).
Elizabeth Abato, UF Class of 2009: Senior Veterinary Student Research Project,
Comparison between serum cortisol and testosterone in Greater Asian One-horned
Rhinoceros (Rhinoceros unicornis).
Leah Tibbals, Class of 2007 (Ross University): Osteosarcoma of the os penis in a
dog. 6th place, SFT Annual Conference, Monterey, CA. August 2007.
These are students who used me as a continuing resource during their veterinary
curriculum to help with professional questions during their courses of study. In general I
helped with planning for courses, preceptorships, externships, internships, and
Magda Rosol, ISU Class of 2010; aided Magda in her successful application for
the Winner’s Circle Scholarship from the American Association of Equine
Jessica Waldock, ISU Class of 2010; aided Jessica in finding and securing 3
different equine veterinary externships for her senior year.
Amanda Silverberg, ISU Class of 2010; aided Amanda in securing a senior year
externship at White Oak Conservation Center.
Charles Broaddus, Theriogenology resident at Oklahoma State University, passed
qualifying ACT qualifying exam August 2007.
Glen Jensen, Private practitioner in Castle Dale, UT, preparing to take ACT
qualifying exam August 2010.
Danielle Munson, WSU Class of 2003, Private practitioner at Sumner Veterinary
Hospital in Sumner, WA, preparing for ACT certification, scheduled to take
qualifying exam August 2012.
Chelsea Cohorn, Theriogenology resident at Oklahoma State University, passed
ACT qualifying examination August 2009
Linda Kauffman, Theriogenology/community practice faculty at Iowa State
University, preparing to take the ACT qualifying examination in 2011.
American College of Theriogenologists
Society for Theriogenology
American Association of Zoo Veterinarians
American Veterinary Medical Association
Society for Conservation Biology
National Audubon Society (Vice President of local chapter 2006-07)
ACT Mission Committee May 2009-present
o Determine the purpose of the ACT and how to better market the
organization and otherwise attain those goals.
ACT Credentialing Committee June 2009-present
o Review applicants’ packets of those applying to take the ACT board-
Iowa State University IACUC Committee April 2009-present
o Review project proposals; especially those pertaining to endocrine work.
Iowa State University Admissions Committee
o Behavior Interview Subcommittee
International Presentations and Lectures
Mare breeding management; ART in horses. Both presentations delivered at Szt. István Egyetem
in Budapest to the International and Hungarian veterinary classes. Lectures delivered in English
and Hungarian. September 2009.
Complete curriculum in equine theriogenology at St. Matthew’s University on Grand Cayman
Island; includes lectures on: breeding management, pregnancy, breeding soundness evaluations,
infertility, eutocia & dystocia, puerperium disorders, semen evaluation, stallion reproductive
disorders, and assisted reproductive techniques.
Complete curriculum in small animal (predominantly canine) theriogenology at St. Matthew’s
University on Grand Cayman Island; includes lectures on: gonadal, prostatic, mammary, uterine,
& vaginal disease, infectious infertility, periparturient & neonatal disease, breeding management
& artificial insemination, pregnancy, eutocia & dystocia, caesarian section, and feline
theriogenology. Also included 2 labs: vaginal cytology and semen collection & evaluation.
Manipulating estrous cycles in major taxonomic groups. Masters class for zoo veterinarians.
Zoological Society of London. London Zoo. September 27, 2006.
The Science and ART of Captive Propagation of Wildlife. Masters Lecture in Wildlife Medicine,
The Royal Veterinary College, University of London, London, England, December 1, 2005.
Canine Vaginal Disease; Canine Infectious Infertility; Breeding Management in the Bitch.
Curriculum lectures to senior veterinary students. Szt Istvan University, Faculty of Veterinary
Science, Budapest, Hungary. November 28, 2005; October 2, 2006; September 22, 2008.
Influences of age, time of year, and female presence on serum testosterone concentration in
captive black rhinoceros (Diceros bicornis). BW Christensen, MHT Troedsson, M Oliva, J
Hernandez, ML Macpherson, MA Pozor, and LM Penfold. 5th international symposium on
physiology, behaviour, and conservation of wildlife. Berlin, Germany. September 26-29, 2004.
National Presentations and Lectures
Technical advances in the classroom; Society for Theriogenology Educators’ Forum;
Albuquerque, NM, August 2009
Canine Infectious Infertility; Veterinary Involvement in Breeding Management. Pheasants Forever
Pheasant Fest, Annual meeting; Madison, WI; February 6-8, 2009.
Equine series (High risk mare, Induction of parturition, Semen evaluation, Embryo transfer,
Dystocia Management, Breeding Management). Central States Veterinary Conference.
Baltimore, MD, April 18-20, 2008.
Invasive and Non-invasive Methods of Hormone Monitoring in Captive Wildlife. Rhino Keepers
Workshop, Columbus, Ohio, May 6, 2005.
Canine and Feline semen freezing, Small Animal Breeding Symposium, Society for
Theriogenology, Charleston, SC, August 2005.
Exogenous Influences on Serum Testosterone Concentration in Captive Black Rhinoceros
(Diceros bicornis). BW Christensen, MHT Troedsson, M Olivia, J Hernandez, ML Macpherson,
MA Pozor, and LM Penfold. Poster at annual conference for the American Association of Zoo
Veterinarians, San Diego, Califorina, August 28-September 3, 2004.
Social, seasonal, and age-related influences on serum testosterone concentration in captive black
rhinoceros (Diceros bicornis). BW Christensen, MHT Troedsson, M Oliva, J Hernandez, ML
Macpherson, MA Pozor, and LM Penfold. Annual conference for the Society for Theriogenology.
Lexington, Kentucky. August 5-7, 2004.
Dystocia and paraparesis associated with intra-pelvic space-restricting hematoma in a Spanish
Ibex (Capra pyrenaica). Vilar J, Ramirez G, Corbera J. [Paper #2008-0094] Journal of Zoo and
Three cases of mega allantoic vesicles in the equine placenta. Singh K, Holyoak GR, Snider TA,
Schlafer DH. Equine Veterinary Journal. 2008.
Local Presentations and Lectures
Iowa State University (VCS 447) Equine Veterinary Diagnostic Skills
Coordinator for a new course focusing on training senior veterinary students to perform and
interpret entry-level diagnostic skills with horses. Course spans the disciplines of
theriogenology, medicine, surgery, ophthalmology, and radiology and includes a comparative
study looking at graduate competency between students who did and did not take the course.
First offered Fall 2009.
Iowa State University (VDPAM 450) Clinical Theriogenology
Didactic course for third-year veterinary students.
Taught 4 of 10 canine lectures and all 15 equine lectures, as well as 2 general species lectures
on sex determination.
Currently actively involved in restructuring of the course to offer more of a tracking option,
allowing students to focus more on their respective species of interest.
Iowa State University
Equine Embryo Transfer; Mare & Foal Seminar at Kildee Hall; February 14, 2009.
Veisha 2009; Equine Pregnancy Ultrasound; April 18, 2009.
ANI SCI 417 April 2009: Equine Embryo Transfer (2 hours)
Pheasants Forever Pheasantfest 2009, Madison, Wisconsin
Veterinary role in canine breeding management
Canine infectious infertility
Central Iowa Kennel Club
Veterinary Role in Canine Reproduction. May 19, 2009.
Ellsworth Community College
AGE 205 Breeding Management course; “Equine Embryo Transfer;” April 29, 2009.
Iowa Greyhound Association
Breeding management services at ISU; January 24, 2009.
Fort Dodge Kennel Club
Veterinary Role in Canine Reproduction. September 18, 2008.
Iowa Veterinary Medical Association
CE meeting key speaker, topics: Equine Embryo Transfer, High Risk Pregnancy, and Equine
Dystocia. November 5, 2008.
Rhino Mojo: External Effects on Serum Testosterone. April 5, 2006.
The ART (Assisted Reproductive Techniques) of Conservation. October 26, 2004.
Erectile Dysfunction. Resident Seminar, University of Florida, May 18, 2004.
University of Florida VEM 5278: THERIOGENOLOGY
Small Ruminant Reproduction. November 2004 and 2005.
Bovine Abortion. November 2004.
Porcine Reproduction: Makin’ Bacon. November 2003.
8 different 3 hour labs (October-December 2003-2006) covering the following topics:
o Bovine palpation, Bovine Obstetrics, Bovine Gynecology, Bovine Andrology,
Equine Gynecology, Equine BSE & AI, Canine-female reproduction, Canine-male
University of Florida VEM 5271: SMALL ANIMAL REPRODUCTION AND SURGERY
Canine Vaginal Disease. September 2005.
Canine Testicular and Epididymal Disease. September 2005.
Canine and Feline Infectious Infertility. September 2004.
Canine Parturition: Eutocia and Dystocia. September 2003.
University of Florida VEM 5274: EQUINE REPRODUCTION
Equine Dystocia. September 2005.
BSE in the Mare. September 2004.
University of Florida VEM 5111: ANIMAL SYSTEMS II
Sex Determination. January 2005 and 2006.
Can a Tom be a Tortoise-shell? January 2005 and 2006.
SRY-negative XX sex reversal in a bitch. January 2005.
Breed My Mare! (A case of vernal transition). January 2004.
University of Florida VEM 5110A: MAMMALIAN ENDOCRINOLOGY
Glucocorticoid hormones in health, medicine, and disease. November 2004 and 2005.
Adrenal medullary hormones and stress response. November 2004 and 2005.
Exogenous influences on serum testosterone concentrations in male African rhinoceros
species. Alpha Psi Research Day, University of Florida, June 9, 2006.
Hemospermia in a Stallion: Blood on the Track. Lunch-rounds Seminar. Florida Student
Chapter of the Society for Theriogenology. February 2006.
Foaling Prediction. Equine manager short course, University of Florida. January 2006.
Stallion Semen Collection. Technician Continuing Education. University of Florida. January
Stallion Semen Processing for Cooled Shipment. Technician Continuing Education.
University of Florida. February 2006.
Placental Examination. Technician Continuing Education. University of Florida. June 2005.
Small Animal Reproduction: NAVLE Board Review. University of Florida. October 2004.
Canine Dystocia and Low-Income Owners: Merry Christmas Dr. Grinch. Clinicians’ Problem
Conference, University of Florida, February 18, 2004.
Python Gamete Rescue and Artificial Insemination: Are Heroic Efforts Unethical?
Clinicians’ Problem Conference. University of Florida, February 18, 2004.
Equine Reproduction. NAVLE Board Review. University of Florida. October 2003.
Merit badge counselor for Boy Scouts of America: Bird Study, Nature, and Veterinary
Science merit badges.
Vice President of Alachua Audubon Society: chair of fundraising and advertising committees,
member of conservation and education committees.
Sunday School teacher (October 2006-Aug 2007): age 12 -13 year olds, Church of Jesus
Christ of Latter-day Saints.
Sunday School teacher (June 2008-present): adult class, Church of Jesus Christ of Latter-day
Hobbies: Birding, SCUBA, hiking/camping, skiing, gardening, dancing (ballroom, swing, country),
running, racquetball, reading (favorite authors: Ernest Hemmingway, Thomas Hardy; favorite poets: Petöfi
Sandor, Robinson Jeffers, Robert Frost).