Michael David Whitacre

Works (11)

Updated: March 6th, 2026 14:16

2025 article

Infertility caused by oophoritis in a dog resolved by hemiovariectomy

Nebel-Karp, A., Mahoney, D., Whitacre, M., Bauer, B., & Lyle, S. (2025, January 10). Clinical Theriogenology.

By: A. Nebel-Karp, D. Mahoney, M. Whitacre n, B. Bauer & S. Lyle n

topics (OpenAlex): Assisted Reproductive Technology and Twin Pregnancy; Reproductive Biology and Fertility; Ectopic Pregnancy Diagnosis and Management
Source: NC State University Libraries
Added: March 4, 2026

2014 article

Haemoperitoneum in a pregnant mare with an ovarian haematoma

Beachler, T. M., Bailey, C. S., McKelvey, K. A., Davis, J. L., Edwards, A., Diaw, M., … Whitacre, M. D. (2014, July 13). Equine Veterinary Education.

By: T. Beachler n, C. Bailey n, K. McKelvey n, J. Davis n, A. Edwards n, M. Diaw  n, J. Vasgaard n, M. Whitacre n

author keywords: horse; haemoperitoneum; pregnancy; ovary; haematoma
topics (OpenAlex): Reproductive Physiology in Livestock; Veterinary Equine Medical Research; Animal health and immunology
TL;DR: An unusual case of haemoperitoneum in a pregnant mare attributed to a unilateral ovarian haematoma during early gestation is described, where the mare maintained her pregnancy to term and delivered a live colt. (via Semantic Scholar)
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3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2012 article

B‐mode and D oppler ultrasonography in pony mares with experimentally induced ascending placentitis

Bailey, C. S., Heitzman, J. M., Buchanan, C. N., Bare, C. A., Sper, R. B., Borst, L. B., … Whitacre, M. (2012, November 27). Equine Veterinary Journal, Vol. 44, pp. 88–94.

By: C. Bailey n, J. Heitzman n, C. Buchanan n, C. Bare n, R. Sper n, L. Borst n , M. Macpherson *, K. Archibald n, M. Whitacre n

author keywords: horse; placentitis; Doppler; ultrasound; diagnosis; CTUP
MeSH headings : Animals; Animals, Newborn; Female; Horse Diseases / diagnostic imaging; Horse Diseases / microbiology; Horse Diseases / pathology; Horses; Placenta Diseases / microbiology; Placenta Diseases / pathology; Placenta Diseases / veterinary; Pregnancy; Pregnancy Complications, Infectious / microbiology; Pregnancy Complications, Infectious / pathology; Pregnancy Complications, Infectious / veterinary; Stillbirth; Streptococcal Infections / microbiology; Streptococcal Infections / pathology; Streptococcal Infections / veterinary; Streptococcus equi; Ultrasonography, Doppler / instrumentation; Ultrasonography, Doppler / methods; Ultrasonography, Doppler / veterinary
topics (OpenAlex): Reproductive Physiology in Livestock; Veterinary Equine Medical Research; Animal health and immunology
TL;DR: Doppler and B-mode ultrasonography for the detection of experimentally-induced ascending placentitis in mares was compared and the CTUP, but not uterine blood flow, was different between groups (P = 0.00001). (via Semantic Scholar)
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3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2011 article

Successful reduction of a monozygotic equine twin pregnancy via transabdominal ultrasound‐guided cardiac puncture

Sper, R. B., Whitacre, M. D., Bailey, C. S., Schramme, A. J., Orellana, D. G., Ast, C. K., & Vasgaard, J. M. (2011, May 25). Equine Veterinary Education.

By: R. Sper n, M. Whitacre n, C. Bailey n, A. Schramme n, D. Orellana n, C. Ast n, J. Vasgaard n

author keywords: horse; twin; pregnancy; monozygotic; reduction
topics (OpenAlex): Assisted Reproductive Technology and Twin Pregnancy; Reproductive Physiology in Livestock; Reproductive Biology and Fertility
TL;DR: This report is the first to describe a successful reduction of monozygotic twins by transcutaneous ultrasound-guided cardiac puncture. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2011 article

Uterine artery blood flow remains unchanged in pregnant mares in response to short-term administration of pentoxifylline

Bailey, C. S., Sper, R. B., Schewmaker, J. L., Buchanan, C. N., Beachler, T. M., Pozor, M. A., & Whitacre, M. D. (2011, September 30). Theriogenology.

By: C. Bailey n, R. Sper n, J. Schewmaker n, C. Buchanan n, T. Beachler n, M. Pozor*, M. Whitacre n

author keywords: Uterine blood flow; Equine pregnancy; Placentitis; Pentoxifylline; Color Doppler ultrasound; Horse
MeSH headings : Animals; Female; Gestational Age; Horses / physiology; Pentoxifylline / administration & dosage; Pregnancy; Pulsatile Flow / drug effects; Regional Blood Flow / drug effects; Ultrasonography, Doppler, Color / veterinary; Uterine Artery / diagnostic imaging; Uterine Artery / drug effects; Uterine Artery / physiology; Vascular Resistance / drug effects; Vasodilator Agents / administration & dosage
topics (OpenAlex): Reproductive Physiology in Livestock; Veterinary Equine Medical Research; Reproductive Biology and Fertility
TL;DR: It was concluded that any immediate benefits of pentoxifylline administration in the pregnant mare were not mediated through enhanced uterine artery blood flow. (via Semantic Scholar)
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3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2008 article

Pharmacokinetics of carbetocin, a long‐acting oxytocin analogue, following intravenous administration in horses

SCHRAMME, A. R., PINTO, C. R. F., DAVIS, J., WHISNANT, C. S., & WHITACRE, M. D. (2008, November 1). Equine Veterinary Journal.

By: A. Schramme n, C. Pinto n, J. Davis  n, C. Whisnant n & M. Whitacre n

author keywords: horse; oxytocin; pharmacokinetics; carbetocin
MeSH headings : Animals; Area Under Curve; Female; Half-Life; Heart Rate / drug effects; Horse Diseases / blood; Horse Diseases / drug therapy; Horses / blood; Injections, Intravenous / veterinary; Oxytocin / adverse effects; Oxytocin / analogs & derivatives; Oxytocin / pharmacokinetics; Oxytocin / therapeutic use; Pain / chemically induced; Pain / epidemiology; Pain / veterinary; Radioimmunoassay / veterinary; Respiration / drug effects
topics (OpenAlex): Reproductive Physiology in Livestock; Veterinary Equine Medical Research; Veterinary Medicine and Surgery
TL;DR: The half-life of carbetocin is greater than that previously reported for oxytocin (6.8 min) and is an attractive alternative to Oxytocin therapy in broodmare management. (via Semantic Scholar)
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3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2002 article

Pharmacokinetics and endometrial tissue concentrations of enrofloxacin and the metabolite ciprofloxacin after i.v. administration of enrofloxacin to mares

Papich, M. G., Camp, S. D. V., Cole, J. A., & Whitacre, M. D. (2002, October 1). Journal of Veterinary Pharmacology and Therapeutics, Vol. 25, pp. 343–350.

By: M. Papich n , S. Camp n, J. Cole n & M. Whitacre n

MeSH headings : Animals; Anti-Infective Agents / administration & dosage; Anti-Infective Agents / blood; Anti-Infective Agents / pharmacokinetics; Area Under Curve; Chromatography, High Pressure Liquid / veterinary; Ciprofloxacin / administration & dosage; Ciprofloxacin / blood; Ciprofloxacin / pharmacokinetics; Endometrium / metabolism; Enrofloxacin; Female; Fluoroquinolones; Horses / metabolism; Infusions, Intravenous / veterinary; Quinolones / administration & dosage; Quinolones / blood; Quinolones / pharmacokinetics
topics (OpenAlex): Antibiotics Pharmacokinetics and Efficacy; Veterinary medicine and infectious diseases; Coccidia and coccidiosis research
TL;DR: Endometrial tissue concentrations taken from the mares after dosing showed that enrofloxacin and ciprofloxin both penetrate this tissue adequately after systemic administration and would attain concentrations high enough in the tissue fluids to treat infections of the endometrium caused by susceptible bacteria. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2001 article

Ovarian follicular development following administration of progesterone or aspiration of ovarian follicles in holstein cows

Cavalieri, J., Farin, P. W., Kinder, J. E., Camp, S. D. V., Whitacre, M. D., Washburn, S. P., & Britt, J. H. (2001, February 1). Theriogenology, Vol. 55, pp. 805–821.

By: J. Cavalieri n, P. Farin n, J. Kinder*, S. Camp n, M. Whitacre n, S. Washburn n, J. Britt n 

author keywords: ovarian follicle aspiration; FSH; progesterone; synchronization; ultrasonography
MeSH headings : Animals; Biopsy, Needle / veterinary; Cattle / physiology; Dinoprost / pharmacology; Estradiol / blood; Estrus; Estrus Synchronization / blood; Female; Follicle Stimulating Hormone / blood; Ovarian Follicle / drug effects; Ovarian Follicle / growth & development; Ovary / diagnostic imaging; Ovulation; Progesterone / pharmacology; Ultrasonography
topics (OpenAlex): Reproductive Physiology in Livestock; Genetic and phenotypic traits in livestock; Ruminant Nutrition and Digestive Physiology
TL;DR: Both the administration of P4 and the aspiration of follicle aspiration on Day 7 of the estrous cycle improves the synchrony of ovulation when luteolysis is induced on Day 11 and results in similar concentrations of FSH at the time of follicular wave emergence, but the timing of wave emergence and the number of follicles post-emergence differ. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2000 article

Administration of ticarcillin in combination with clavulanic acid intravenously and intrauterinely to clinically normal oestrous mares

CAMP, S. D. V. A. N., PAPICH, M. G., & WHITACRE, M. D. (2000, December 1). Journal of Veterinary Pharmacology and Therapeutics, Vol. 23, pp. 373–378.

By: S. Camp n, M. Papich n  & M. Whitacre*

MeSH headings : Animals; Anti-Bacterial Agents / administration & dosage; Anti-Bacterial Agents / blood; Anti-Bacterial Agents / pharmacokinetics; Chromatography, High Pressure Liquid; Clavulanic Acid / administration & dosage; Clavulanic Acid / blood; Clavulanic Acid / pharmacokinetics; Cross-Over Studies; Drug Therapy, Combination; Female; Half-Life; Horses; Injections, Intravenous; Microbial Sensitivity Tests; Penicillins / administration & dosage; Penicillins / blood; Penicillins / pharmacokinetics; Ticarcillin / administration & dosage; Ticarcillin / blood; Ticarcillin / pharmacokinetics; Tissue Distribution
topics (OpenAlex): Antibiotics Pharmacokinetics and Efficacy; Veterinary medicine and infectious diseases; Antibiotic Resistance in Bacteria
TL;DR: It appears that addition of clavulanate to the formulation for treatment of i.u. infections in mares is of questionable value based on these concentrations, which would necessitate frequent treatment in order to maintain drug concentrations above the minimum inhibitory concentrations (MIC) throughout the treatment period. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

1992 article

Detection of Intravaginal Spermatozoa After Natural Mating in the Bitch

Whitacre, M. D., Yates, D. J., VanCamp, S. D., & Meuten, D. J. (1992, September 1). Veterinary Clinical Pathology.

By: M. Whitacre n, D. Yates, S. VanCamp & D. Meuten

topics (OpenAlex): Veterinary Medicine and Surgery; Reproductive Physiology in Livestock; Sperm and Testicular Function
TL;DR: In order to improve detection of spermatozoa post-coitus, a prospective study was initiated utilizing natural breedings of purebred beagles to determine whether or not a mismating has occurred. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

1991 article

Transendoscopic Nd: YAG Laser Ablation of Vaginal Septa in a Bitch

WHITACRE, M. I. C. H. A. E. L. D., TATE, L. L. O. Y. D. P., ESTILL, C. H. A. R. L. E. S. T., & CAMP, S. T. E. V. E. N. D. V. A. N. (1991, July 1). Veterinary Surgery.

By: M. Whitacre n, L. Tate n, C. Estill  n & S. Camp n

MeSH headings : Animals; Colposcopy / veterinary; Dogs / abnormalities; Dogs / surgery; Female; Fiber Optic Technology; Laser Therapy / veterinary; Vagina / abnormalities; Vagina / surgery
topics (OpenAlex): Veterinary Medicine and Surgery; Veterinary Equine Medical Research; Reproductive Physiology in Livestock
TL;DR: Transendoscopic laser ablation provided a noninvasive approach to surgically remove a vaginal septum in the dog. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

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