EARLY DETECTION OF PREGNANCY BY DIFFERENT METHODS AND DETERMINATION OF GESTATIONAL AGE BY ULTRASONOGRAPHY IN BIDRI GOATS
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Date
2023
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KARNATAKA VETERINARY, ANIMAL AND FISHERIES SCIENCES UNIVERSITY, BIDAR
Abstract
The primary goal of the current study was to evaluate the accuracy of early
pregnancy diagnosis and gestational age estimation in Bidri goats. The progesterone
concentrations were 0.50±0.08, 3.03±0.35, 3.73±0.35 and 5.04±0.33 ng/ml on day 1, 17,
21 and 30 post breeding in does with significant difference (P<0.05 ) and less than
0.54ng/ml in all non-pregnant Bidri does. P4 estimation was proven to be a helpful method
to identify pregnancy with the best accuracy (100.00%) on day 30. The PAG concentrations
were 3.19± 0.46, 4.45± 0.62 and 5.59± 0.79ng/ml on day 17, 21 and 30 post breeding in
does and less than 0.68 ng/ml in all non-pregnant Bidri does. PAG estimation was proven
to be a helpful method to identify pregnancy with the high accuracy (90 %) on day 30.
Draminski pregnancy detector can detect pregnancy from day 58 to 120 post breeding with
85 % accuracy. Barium chloride test yielded with accuracy of 55 %, 60 %, 70 %, 75 % and
85 % on day 17, 18, 19, 20 and 21 post breeding respectively. Trans-rectal ultrasonography
reported with accuracy of 55 %, 85 % and 100 % on day 21, 24 and 30 post breeding
respectively. Greater values are suggestive of VER on day 18 after breeding, with accuracy
rates of 65% and 100% from day 18-21 and 22-30 post-breeding respectively. The
gestational age of Bidri goats was estimated using the GSD as early as day 24 of gestation,
which was shown to be a useful and accurate tool. Foetal CRL by transabdominal means
was calculated from day 35 to day 60, BPD from day 35 to 80 and PD from 45 to 80 post
breeding.