Peripheral concentration of progesterone and cortisol in plasma of Barki ewes and Baladi goats during late pregnancy and post partum period

Ezzo, O.H.; Shalaby, S.I.A.

Egyptian Journal of Veterinary Science( 1992); 27: 47-56


Accession: 002454829

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Blood samples were obtained from 6 ewes and 11 goats at weekly intervals, from 30 days before to 9 weeks after parturition. In the last 30 days of gestation, blood progesterone concentration ranged from 5.62 to 16.57 ng/ml for ewes and from 6.09 to 11.90 ng/ml for goats vs. average concentrations of 0.14 and 0.11 ng/ml respectively 1 wk after parturition and 0.12 and 0.05 ng/ml 2-5 week post partum (P<0.05). The differences between the 2 species were significant during the postpartum period. Plasma cortisol concentration averaged 0.46 and 0.26 mu g% respectively for ewes and goats 30 days before parturition, 1.35 and 1.03 mu g% 15 days before parturition, 3.8 and 2.13 mu g% 1 week post partum and 0.13 and 0.52 mu g 2-5 weeks after parturition, the differences between ewes and goats being significant in all periods.