Doppler indices of umbilical and uterine arteries in singleton and multiple pregnancies of Malabari goats

The present study evaluated the Doppler indices of the umbilical (UMA) and uterine arteries (UTA) in singleton and multiple pregnancies of Malabari goats. Sixty-eight pregnant goats were categorised into singleton (Group I, n 32) and multiple pregnancies (Group II, n 36) based on gestational sac and foetal counts by ultrasonography on day 21, 30, 45 and 60 of gestation. Pulsatility index (PI) and resistance index (RI) of UMA and bilateral UTA were assessed on day 45, 90 and 120 of gestation. In singleton pregnancies, the PI of UMA significantly decreased from 1.91 0.04 to 1.24 0.01, while in multiples it declined from 1.51 0.03 to 1.17 0.02 (P