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History A 2-year-old pregnant heifer aborted her first calf in the third trimester. She was housed on an outdoor pasture with other bred heifers. Third-trimester abortions had been a chronic problem in this herd for the past 7 years. The farm
dysfunction that may require emergent decompression, the pregnant individual is able to accommodate the gravid uterus via expansion of the thoracic wall, softening of intra-abdominal ligaments, and the development of collateral blood flow. 1 – 3 These gradual
A thorough understanding of maternal and fetal physiology and the effects of anesthetic drugs on each is paramount in assuring safety during anesthesia of pregnant patients. 1,2 Physiologic changes during pregnancy are attributed to increases in
/sheep/day), results in drug concentrations that are presumed to be subtherapeutic in the plasma of pregnant ewes and are generally undetectable in fetal tissues and amniotic fluid. Moreover, most recent C jejuni isolates obtained from US sheep are resistant to
Introduction Bovine viral diarrhea virus is an economically important pathogen of livestock worldwide, and many ungulate species are susceptible to BVDV infection. 1 In pregnant ungulates, the virus can cross the placenta and infect the fetus
(named IA 3902) has emerged that is now a leading cause of abortion outbreaks in sheep in the United States. Intraperitoneal inoculation of pregnant guinea pigs has been used as a method to evaluate the pathogenicity of Campylobacter spp 12,13 and to
BVDV infections in cattle, including development of fever and depletion of circulating lymphocytes. In another study, 4 9 pregnant does were infected with both a BVDV1 (BJ) strain and a BVDV2 (PA131) strain of bovine origin; although no clinical signs
Sheep are an important livestock species commonly treated in veterinary clinical practice. They are also commonly used for research, especially surgical and fetal-development research. 1–3 Administration of opioids to pregnant females is of
A 24-year-old 732-kg (1,610-lb) Belgian mare was admitted to the veterinary teaching hospital for evaluation of intermittent colic of 3 days' duration. The mare was reported to be 320 days' pregnant, with prior gestations lasting between 340 and
production of higher quality colostrum. One major problem with vaccination of pregnant cows is abortion. 12 Vaccine manufacturers are required to state on labels the potential risks related to fetal loss when vaccines are used in pregnant immune-naïve cows
