Abstract
The objectives of this study were to record the changes in some acute phase proteins (APPs) either positive or negative during transition period and to demonstrate the correlation between different APPs in the transition period. To achieve these objectives, 29 pregnant buffaloes were selected at 2nd and 3rd milk season from Ard El -Kheir farm. The study was carried out in Assuit Governorate, Whole blood samples were collected from these buffaloes for determination of fibrinogen, blood plasma samples were collected for determination of vit. A and blood serum samples were collected for determination of serum albumin, serum total cholesterol, serum total bilirubin and serum haptoglobin). Blood samples were collected as the following: (-21d: -15d), (-14d: -8d), (-7d: -1d), calving day, 3 d P.P, 7 d P.P, 14 d P.P and 28 d P.P. The study revealed significant changes in the concentration of some acute phase proteins, whether positive or negative. The mean values of fibrinogen revealed significant changes with maximum increase at day 3 P.P. Non significant changes in the mean values of haptoglobin with maximum increase one week pre partum. Significant increase in the mean values of total bilirubin at calving day and post partum periods compared with pre partum periods, reached maximum at day 14 P.P. The mean values of albumin revealed significant changes with maximum increase one week pre partum. A significant decrease in the mean values of total cholesterol at pre partum compared with post partum reached maximum at calving day compared with pre and post partum periods. A significant decrease in the mean values of vit. A reached maximum at day 7 P.P.
Highlights
The Egyptian buffalo plays a crucial role in Egypt economy by their livestock productivity from milk and meat
Mean values revealed significant (p < 0.05) increase in plasma fibrinogen at calving day compared with pre calving periods, reached maximum at day 3 Post partum (P.P), followed by a significant (p < 0.05) decrease at days14 and 28 P.P, a non significant difference in serum haptoglobin during transition period but maximum increase occurred at (-7d) pre partum and significant (p < 0.05) increase in serum total bilirubin at calving day and post calving periods compared with pre calving periods, reached maximum at day 14 P.P
Mean values revealed significant (p
Summary
The Egyptian buffalo plays a crucial role in Egypt economy by their livestock productivity from milk and meat. The transition period, as defined by Drackley (1999), is a stressful time for the health and productivity of dairy animals, and the most challenging stage in the lactation cycle when most metabolic disorders and infectious diseases occur. It is the period around calving constitutes late pregnancy and early lactation, generally 3 weeks before and 3 weeks after parturition. The main objectives of this study were to record the changes in some acute phase proteins (APPs) during transition period and to demonstrate the correlation between different APPs in the transition period
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