Comparative estimation of serum biochemical profile during estrus, pregnancy and calving periods for dairy cows in thiqar province

الملخص EN

Testing of blood biochemical parameters is a pre-symptomatic diagnostic appliance to determine the nutritional status of any dairy herd and other disorders such as productivity and reproduction.

these parameters are influenced by both intrinsic and extrinsic factors like breed, age, sex, lactation, pregnancy, health and nutrition status of the cows in dairy herd.

The present study was undertaken to estimate the selected nutritional status of dairy cows by using biochemical tests in Thiqar province in relation to reproductive status of estrus, pregnancy and lactation.

The study was conducted on 40 local breed clinically healthy cows in the teaching veterinary hospital of Thiqar province, they were divided into four groups (estrus group, pregnant group between 2-8 months, lactating group for 1 to 2 months and heifer (dry cows) group of 10 animals for each group basis of reproductive status.

Blood samples were collected aseptically from each animal of all groups for biochemical analysis.

lactating (calving) cows showed a significant increase in blood Glucose, protein and globulins concentrations compared to other groups.

Urea levels in estrus cows were significantly increasing compared to other groups.

Cholesterol concentrations of lactating cows was significantly decrease compared to other groups, serum Triglyceride in estrus cows showed a significant increase when compared with those of heifer and other groups.

However, there were a significant decrease of AST levels in estrus group when compared to those in heifer and other groups.

ALT levels were significantly decreased in all cows of all groups when compared with the heifer cows.

In conclusion biochemical values are an efficient tool for evaluation of physiological status, metabolic disorders, and management problems of the farm which have a great relation to health status of the animal.