Progesterone profile during various physiological stages in mares
2009
Bansal, R.S. | Pal, Yash | Pareek, P.K. | Gupta, A.K.
Progesterone profile during estrous cycle, pregnancy and foal heat were studied in Thoroughbred and Indigenous mares. The mean progesterone level on the day of ovulation was 0.33 and 0.37 ng/ml in Thoroughbreds and lndigenous mares, respectively and reached to highest level of 9.12 and 9.58 ng/ml on day 10 of estrous cycle, respectively. Progesterone levels ranged between 1.06 to 15.60 and 1.17 to 16.07 ng/ml upto 90 days of gestation and then decreased during rest of gestation in ' Thoroughbreds and Indigenous mares, respectively. The progesterone levels were high on the day of foaling and decreased to the level of 0.30 to 0.32 ng/ml on day 9 post-foaling. The pattern of progesterone change during various physiological conditions was similar in both the breeds of horses.
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