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Titolo:
Shrinkage in the horizontal dimensions of the vulva (vulvar shrinkage) as an indicator of standing heat in the beagle
Autore:
Nishiyama, T; Narita, K; Tsumagari, S; Takeishi, M;
Indirizzi:
Nihon Univ, Coll Bioresource Sci, Lab Vet Obstet & Gynecol, Fujisawa, Kanagawa 2528510, Japan Nihon Univ Fujisawa Kanagawa Japan 2528510 isawa, Kanagawa 2528510, Japan
Titolo Testata:
JOURNAL OF THE AMERICAN ANIMAL HOSPITAL ASSOCIATION
fascicolo: 6, volume: 36, anno: 2000,
pagine: 556 - 560
SICI:
0587-2871(200011/12)36:6<556:SITHDO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEXUAL-BEHAVIOR; OVARIAN CYCLE; BITCH; PROGESTERONE; LH; OVULATION; ESTROGEN; DOGS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Takeishi, M Nihon Univ, Coll Bioresource Sci, Lab Vet Obstet & Gynecol, 1866 Kameino, Fujisawa, Kanagawa 2528510, Japan Nihon Univ 1866 Kameino Fujisawa Kanagawa Japan 2528510 Japan
Citazione:
T. Nishiyama et al., "Shrinkage in the horizontal dimensions of the vulva (vulvar shrinkage) as an indicator of standing heat in the beagle", J AM ANIM H, 36(6), 2000, pp. 556-560

Abstract

During the proestrous and estrous periods in 12 beagles, 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 identificationof the LH surge and the optimal time for artificial insemination (Al). Nine out of the 12 beagles became pregnant through Al 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 ofthe 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.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 12:40:38