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Theriogenology Question of the Month

Jamie L. Stewart DVM, PhD, DACT1, Sherrie G. Clark DVM, PhD, DACT1, Elaine Claffey DVM, DACVS1, Guillermo Cardona DVM1, Alyssa Helms DVM, MS2, and Anna M. Hassebroek DVM, MPH3
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  • 1 Department of Large Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA
  • | 2 Department of Small Animal Clinical Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA
  • | 3 Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA
History

A 10-year-old 57-kg sexually intact female alpaca was presented because of a 3- to 4-month history of aggressive behavior (attacking and charging herdmates). The alpaca previously had several successful pregnancies, with her last cria born approximately 1.5 years earlier. There had been no other male exposure since that breeding, as the owners only have females and 1 gelding (housed separately). The referring veterinarian collected blood for hormone testing through the Cornell University Animal Health Diagnostic Center in Ithaca, NY. Serum progesterone concentration was 10.49 ng/mL, consistent with progesterone concentration reference limit of > 2 mg/mL during pregnancy in camelids.

Supplementary Materials

    • Supplementary Figure S1 (PDF 169 KB)

Contributor Notes

Corresponding author: Dr. Stewart (jlstewart13@vt.edu)

In collaboration with the American College of Theriogenologists