Front Page VSPN Message Boards Chat Library Continual Education Search MyVSPN - Coming Soon Help Frequently Asked Questions Send us Feedback! Go to VIN Industry Partners Go to VetQuest Go to Veterinary Partner Go to Y2Spay
 
Menu bar   Go to the VIN.com Portal
 

ABSTRACT OF THE WEEK

Journal of the American Veterinary Medical Association
Volume 245 | Issue 12 (December 2014)

Vaginal impedometry for detection of optimal breeding time in bitches.

J Am Vet Med Assoc. December 2014;245(12):1360-6.
Lindsay H Bergeron1, Stephanie G Nykamp, Brigitte A Brisson, Pavneesh Madan, William Sears, Cathy J Gartley
1 Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.

Abstract

OBJECTIVE: To compare the efficacy of canine vaginal impedometry in identifying the preovulatory luteinizing hormone (LH) peak to that of currently used methods (serum progesterone concentration measurement, vaginal cytologic evaluation, and vaginoscopy). DESIGN: Prospective study. ANIMALS: 12 sexually intact female dogs. PROCEDURES: 12 mature postpubertal Beagle (n = 3), Beagle-cross (2), and hound-cross (7) bitches ranging from 7.5 to 27.5 kg (16.5 to 60.6 lb) were enrolled in the study. After the onset of spontaneous proestrus, determined on the basis of appearance of serosanguineous vaginal discharge, serum progesterone assays, vaginoscopy, vaginal cytologic evaluation, and vaginal impedometry were performed daily until approximately 4 days after peak LH concentration (day 0) as measured by radioimmunoassay. Vaginal impedometry was compared against serum progesterone concentration measurement, vaginal cytologic evaluation, and vaginoscopy as a method for accurately identifying the LH peak and therefore the optimal breeding time. Ten of 12 bitches were bred with subsequent assessment of embryos. RESULTS: Vaginal impedometry accurately predicted the preovulatory LH peak in 5 of 11 bitches. One bitch was removed from the study because data were not collected. Of the remaining 11 bitches, 6 had their LH peak on the day serum progesterone concentration first exceeded 2 ng/mL. Crenulation scores reached 1 (mean, 1.3; 95% confidence interval, 0.8 to 1.7) on day 0 as expected; however, these scores were not significantly different from those on days -1 or 1. Vaginal epithelial cell populations did not change noticeably on day 0. Nine of the 10 bitches that were bred produced viable embryos. CONCLUSIONS AND CLINICAL RELEVANCE: Results suggested that daily use of vaginal impedometry in bitches was unreliable as a method for monitoring periovulatory events. All techniques evaluated (ie vaginal impedometry, serum progesterone concentration assays, vaginoscopy and vaginal cytologic evaluation) frequently produced inaccurate results when used individually. Multiple methods should be used to identify optimal breeding time in dogs.

Article Tools:
   Medline
   Email to me

Archives Highlights:
Dimethyl sulfoxide favors the emetic efficacy of lycorine in beagle dogs - a novel strategy for the treatment of poisoning.
By emesis response analysis four dimethyl sulfoxide (DMSO)-based active pharmaceutical ingredient (API) formulations were favored. Two of them (lycorine hydrochloride, 15 mg/mL in 70% DMSO, 10% ethanol, and 20% water; and lycorine hydrochloride, 15 mg/mL in 50% DMSO, 50% water) qualified for further drug development. Both formulations ensure a safe pharmacologically induced emesis within about 30 min after injection, suitable for use as an in time decontaminant in acute poisoning of dogs. DMSO-based formulations were well tolerated and offer a novel promising strategy for treatment of poisoning.
Feline Stress Management During air Travel: A Multimodal Approach.
While the discussion is focused on air travel specifically, the stress management methods described can be applied to all types of longer distance travel, such as a long road trip or a ferry crossing, as well as a stay in a holiday home.
Fibroblastic osteosarcoma in a guinea pig (Cavia porcellus)
The patient presented a hard mass in the right hind limb extending from the proximal portion of the femur, projecting caudally to the proximal tuberosity of the calcaneus, with an increase in temperature, and a marked increase in sensitivity. Disarticulation was performed.
Difficulty walking and trembling in a 10-year-old female Akita Inu.
The overall prognosis in dogs with orthostatic tremors is considered to be good, as the disease is benign and slowly progressive.
National Dog Survey: Describing UK Dog and Ownership Demographics.
The online survey was completed by a total of 354,046 respondents owning dogs in the UK, providing data for 440,423 dogs. The results of this study highlight dog demographics, including acquisition and veterinary factors, as well as owner demographic and household information. This dataset serves as an up-to-date baseline for future study comparisons to continue to monitor trends and patterns of the dog population and dog owners going forwards.

Back Print Save Bookmark in my Browser Email this article to me. Top of Page. VSPN AOW : Vaginal impedometry for d...
Contact Us