ABSTRACT
The present study was carried out on 342 imported Friesian cattle to investigate the problem of placental retention with emphasis on some reproductive performance and blood constituents. Blood samples were collected from cows which retained their foetal membranes for more than 24 hours after birth as well as normal parturient cows. Results indicated that retained placenta occurred in 16.72% of cases, predominate in primipara [34.10%] and during the hot season of the year [55.55%]. Significant decrease in plasma magnesium [P < 0.01]; Inorg. phosphorus and iron levels [P < 0.05] and increase in plasma progesterone values were detected in cases with retained placenta as compared to normal parturient cows. Moreover, the retained placenta causes delayed first post partum heat, calving interval with a reduction in fertility and a decrease in milk yiels
Subject(s)
CattleABSTRACT
Plasma progesterone and cortisol levels were estimated at late stage of pregnancy and postpartum period in 6 Barki ewes and 11 Baladi goats. During the 15 days, pre partum low values of progesterone were detected with nonsignificant variation in both ewes and goats. However, during postpartum period [2-5 weeks], low values of progesterone were estimated with significant [P <0.05] between ewes and goats. Plasma cortisol concentration were significantly increased during the 15 days than 30 days pre-partum period for both ewes [p <0.05] and [p <0.01] goats. In the meantime, there is no significant variation in between ewes and goats in cortisol concentration during this period. A significant [p <0.05] increase in cortisol concentrations during the first week after birth for both ewes and goats was recorded. Moreover, significant variations [p <0.05] in cortisol concentration between ewes and goats were observed during pre-partum [30 days] and postpartum period [1-5 weeks]