Evaluation of the significance of changes in serum biochemical parameters on the risk of abomasal displacement in dairy cows using the Logistic regression model

Left displacement of abomasum (LDA) is an important metabolic disease in dairy cows which cause a large economic loss in dairy industry. So determination of these changes will be important to predict the disease after parturition. In the present study, 14 serum biochemical parameters of cows with LDA before and after parturition were compared to those of healthy cows (control group) using several statistical models especially Logistic regression. In the statistical model changes in 6 parameters beta-hydroxy butyrate(BHB), Non esterified fatty acids(NEFA), Aspartate amino transferase(AST), Calcium, Sodium and Potassium between control and LDA groups was significant (P<0.05). Using the values of these 6 parameters in the Logistic regression formula one week after parturition, the odds of LDA would be calculated. So the owner would be able to predict the occurrence of LDA and protect the herd against it with correction of diet and treatment of LDA concurrent metabolic diseases.