Ultrasonographic Study of Deep Portion of Diencephalo-Telencephalic Vesicle for the Determination of Gestational Age of the Canine Foetus
Articolo
Data di Pubblicazione:
2008
Citazione:
Ultrasonographic Study of Deep Portion of Diencephalo-Telencephalic Vesicle for the Determination of Gestational Age of the Canine Foetus / M. Beccaglia, M. Faustini, G.C. Luvoni. - In: REPRODUCTION IN DOMESTIC ANIMALS. - ISSN 0936-6768. - 43:3(2008), pp. 367-370.
Abstract:
The aim of this study was to evaluate the accuracy of
ultrasonographic measurement of the deep portion of
diencephalo-telencephalic vesicle (DPTV) in the prediction
of delivery date in different size bitches. The effects of litter
size and foetal sex ratio on the accuracy were also investigated.
For this purpose, the growth curve of DPTV was
derived in large size dogs (26–40 kg) and the results of the
accuracy of the prediction were compared with those
obtained in small (£10 kg) and medium (11–25 kg) size dogs
by the application of the equations derived from the growth
curve previously described. Ultrasonographic examinations
were performed once a week during the second half of
pregnancy in seven large size bitches (26–40 kg body weight).
A linear regression model was adopted to analyse the
relationship between the DPTV mean values and the days
remaining to parturition. The results of regression analysis
indicated that DPTV measurement in large size dogs is
significantly and linearly related to the gestational age.
Ultrasonographic measurements of DPTV were also performed
during pregnancy in different size bitches with
unknown breeding dates. Although the results indicated a
similar accuracy of the prediction of the date of parturition in
the different sizes of bitches, a higher accuracy was obtained
in normal and large litter size compared with small litters.
Foetal sex ratio did not affect the accuracy. In conclusion,
this study demonstrated that the accuracy of the prediction of
parturition day obtained by ultrasonographic evaluation of
DPTV growth is reliable when specific formulae for different
size dogs are applied. It should be noted that although foetal
sex ratio does not affect the accuracy, the prediction could be
less accurate when a small litter is present.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
M. Beccaglia, M. Faustini, G.C. Luvoni
Link alla scheda completa: