Home
http://www.virbac.fr/ http://www.boehringer-ingelheim.com/ http://www.novartis.com/ http://www.animalhealth.bayerhealthcare.com/
vetcontact
Vetrinär
Tiermedizin
  WELCOME  
vetcontact
Vetrinär
Tiermedizin
  Privacy Policy  
  Home  
  Login / Newsletter  
vetcontact
Vetrinär
Tiermedizin
  CONTACTS  
vetcontact
Vetrinär
Tiermedizin
  Classifieds  
  New Products  
  VetCompanies  
  VetSchools  
vetcontact
Vetrinär
Tiermedizin
  PROFESSION  
vetcontact
Vetrinär
Tiermedizin
  Edutainment  
  VetAgenda  
  Presentations  
  Posters  
  ESAVS  
  Specialisation  
vetcontact
Vetrinär
Tiermedizin
  INSIGHT  
vetcontact
Vetrinär
Tiermedizin
  Congress News  
  Picture Galleries  
vetcontact
Vetrinär
Tiermedizin
  PRODUCTS  
vetcontact
Vetrinär
Tiermedizin
  Bayer  
  Boehringer Ing.  
  Novartis  
  Virbac

 
  Simply book for less...  
    

Bovine    Equine    Small Animal Practice    Swine Practice    Articles    Vetjournal    
deutsch english español polski francais
Home / WELCOME / Archiv / Small Animal Practice /     
 
Vulvar shrinkage as indicator for standing heat
Several methods are currently available to find the optimal time for artificial insemination - most popular is the progesteron blood level combined with vaginal cytology. This study from Japan, performed on 12 Beagles, adds another very simple technique with surprising results: the measurement of the horizontal dimensions of the vulva.

During the proestrous and estrous periods, the following parameters were measured daily: the horizontal dimensions of the vulva, vaginal cytology, and serum luteinizing hormone (LH) and progesterone concentrations.

Measurements of serum LH concentrations allowed for the identification of the LH surge and the optimal time for artificial insemination (AI).
Nine out of the 12 beagles became pregnant through AI and completed a gestation.

Shrinkage in the horizontal dimensions of the vulva (i.e., vulvar shrinkage) was primarily observed prior and subsequent to the LH surge.

In six of the nine (66.7%) beagles that became pregnant, vulvar shrinkage was observed on the days in which the LH surge was confirmed, and the rate of vulvar shrinkage tended to be greater at higher serum LH concentrations.
Further vulvar shrinkage was identified in all nine beagles within two days of the LH surge. An increase in the serum progesterone concentration was observed after the LH surge in each of the beagles that became pregnant, together with clinical signs of estrous behavior (i.e., standing heat) as well as a change in vulva condition from swollen to soft.

This demonstrates that vulvar shrinkage is induced in response to the onset of the LH surge and that the LH surge can be predicted through the measurement of the horizontal dimensions of the vulva, vaginal cytology, and the assessment of serum progesterone concentrations in beagles.

Source: Nishiyama T, Narita K, Tsumagari S, Takeishi M (2000): Shrinkage in the horizontal dimensions of the vulva (vulvar shrinkage) as an indicator of standing heat in the beagle. In:
J Am Anim Hosp Assoc 2000 Nov-Dec;36(6):556-60


Tell a friend   |   Print version   |   Send this article

SMALL ANIMAL PRACTICE

Punica granatum associated with hepatotoxicosis in cattlemembers
The ingestion of pomegranates was associated with the deaths of 9 of 35 young cattle; 8 were found dead without any prior clinical signs being noted and 1 animal was observed to be weak with pale‐pink mucous membranes. This case report describes also gross pathological and histopathological signs of the affected cattle and discusses the question which toxic principle was underlying in this case.

  • Toceranib phosphate (Palladia®) in canine gastrointestinal stromal tumorsmembers
  • Radioactive iodine uptake in hyperthyroid cats after rh-TSHmembers
  • Hypoechoic tissue changes in dogs with malignant prostatic lymphomamembers
  • Emphysematous gastritis in dogs and catsmembers
  • Primary pulmonary histiocytic sarcoma in dogsmembers
  • Determining prognosis in canine sepsis members
  • Correlation of plasma and tear glucose, creatinine and urea nitrogen in catsmembers
  • Perineal hernias in dogs - always a bilateral problem?members
  • Pharmacokinetic of gabapentin in catsmembers
  • Follicular development of canine ovaries stimulated by eCG plus hCGmembers
  • Gastrointestinal effects following acupuncture in healthy dogsmembers
  • Bilateral repair of apparently unilateral perineal hernias in dogsmembers


  • [ Home ] [ About ] [ Contact / Request ] [ Privacy Policy ]

    Copyright © 2001-2018 VetContact GmbH
    All rights reserved