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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.

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in Journal of the American Veterinary Medical Association
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A 1-year-old primiparous female Boer cross goat was presented to the J. T. Vaughn Large Animal Teaching Hospital at Auburn University College of Veterinary Medicine with a history of prolonged first-stage labor following an otherwise uneventful pregnancy. When checking on the doe, the owner observed visceral organs protruding from the vulva and called the emergency service for assistance.

At the time of presentation, the doe was bright, alert, and responsive. Vital signs included a rectal temperature of 38.5 °C, heart rate of 126 beats per minute, and respiratory rate of 76 breaths per minute. Mucous membranes were pink and

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in Journal of the American Veterinary Medical Association
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A 3-year-old Holstein Friesian cow from the Rayner Dairy Research and Teaching Facility, University of Saskatchewan, was bred successfully by artificial insemination at 135 days in milk (DIM) during the first lactation. Pregnancy was diagnosed at 168 DIM and confirmed at 196 and 238 DIM via transrectal ultrasonography. At 278 days of gestation, the cow delivered a healthy heifer calf that weighed 40 kg followed by the expulsion of an abnormal mass. The fetal membranes were expelled 2 hours after delivery of the calf and mass.

Clinically, at 1 day of age, the heifer calf had a prominent tuft

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in Journal of the American Veterinary Medical Association
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A 3-year-old 910-kg Aberdeen-Angus bull was referred to the University of Tennessee Theriogenology Services for failure to have a straight penis during erection. The owner reported that the bull was a satisfactory breeder during its first breeding season the previous year; however, this year, the bull’s penis appeared bent when fully erect, and the bull was unable to achieve intromission for breeding.

On referral examination, the bull had a clinically normal gait with no signs of lameness, no abnormalities of the eyes or adnexal structures, and vital signs within reference limits. On reproductive evaluation, no abnormalities were detected in

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in Journal of the American Veterinary Medical Association
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A 3-year-old 2.96-kg (6.5-lb) sexually intact male Devon Rex was presented to the Bailey Small Animal Teaching Hospital at Auburn University College of Veterinary Medicine for breeding soundness evaluation. The owner, an established cat breeder, had acquired the tom when it was 5 months old, and it was the only tom in the household shared with 5 queens, 2 of which had each produced a litter sired by a different tom in the previous year. The owner also reported that the tom first showed interest in mating at approximately 1.5 years of age and had always had free access

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in Journal of the American Veterinary Medical Association
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A 7-year-old 570-kg (1,254-lb) multiparous warmblood mare that was an embryo transfer recipient of an embryo recovered from a donor mare 8 days after ovulation was referred for pregnancy assessment monitoring purposes. Pregnancy had been diagnosed with transrectal ultrasonography 14 days after embryo transfer, and no further assessments had been performed since then.

On physical examination, the mare had a body condition score of 6 (on a scale of 1 to 9) and was bright, alert, and responsive. The mare's vital signs were within reference limits, and the duration of gestation at that point was reported to have been

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in Journal of the American Veterinary Medical Association
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A 17-year-old 506-kg (1,113.2-lb) multiparous American Quarter Horse mare was referred to the Louisiana State University Veterinary Teaching Hospital Theriogenology Service because of a 1-year history of infertility characterized by nymphomania, anovulatory cycles, and an enlarged right ovary. The mare had reportedly produced 5 or 6 foals throughout her life, with the last foal born approximately 2 years before the present examination. The previous year, the mare was bred by natural mating, and pregnancy was diagnosed with transrectal ultrasonography and visualization of the fetal heartbeat. This pregnancy was lost before the fourth month of gestation, and irregular estrous cycles

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in Journal of the American Veterinary Medical Association
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A 22-month-old 568.2-kg (1,250-lb) Clydesdale filly was referred to the Purdue University Veterinary Teaching Hospital because of a 3-month history of an enlarged left mammary gland. The referring veterinarian originally attributed the enlargement to juvenile galactorrhea because of the filly's young age coupled with the onset of enlargement during springtime, when juvenile galactorrhea in foals and yearling mares is more common. The filly had never been bred and had no access to a stallion. To rule out excessive phytoestrogens in the filly's diet, alfalfa hay was removed from the diet and the mammary gland was closely monitored. Enlargement of

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in Journal of the American Veterinary Medical Association
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A 2-year-old 54.5-kg (119.9-lb) female alpaca (Vicugña pacos) was evaluated at the Oregon State University Veterinary Teaching Hospital (OSU-VTH) because of a 5-day history of progressive stranguria, tenesmus, and signs of abdominal pain. The alpaca had been vaccinated against Clostridium tetani and Clostridium perfringens (types C and D) and dewormed with ivermectin 12 and 3 months, respectively, before the initial examination. In addition, on several occasions between 1 and 3 months before the examination, the alpaca had been naturally mated to a male with good libido and proven fertility. The owner reported that

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in Journal of the American Veterinary Medical Association
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A 2-year-old 14.7-kg (32.3-lb) sexually intact female Australian Shepherd was referred to the Louisiana State University Veterinary Teaching Hospital (LSU VTH) Theriogenology Service for evaluation because of a 1-week history of anorexia and vomiting and a 7-week history of serosanguineous discharge from the vulva since preterm labor and delivery (50 days after mating) of 9 stillborn pups, with 3 pups delivered vaginally and the remaining 6 pups delivered by cesarean section performed by the referring veterinarian. Postmortem examination of the fetuses was not performed, and the reason for the preterm labor was not further investigated. The referring veterinarian had

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in Journal of the American Veterinary Medical Association