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The purpose of this study was to determine concentrations of serum glucose, aspartate aminotransferase (AST), insulin, beta-hydroxybutyrate (BOH) and ionised calcium (lea) in dairy cows with left displaced abomasum (LDA) and to compare these parameters before and after surgical correction of LDA. Eighteen Swiss-Holstein dairy cows with LDA were used in this study. Clinically healthy post parturient cows (n: 10) from a local dairy farm were used as control group. Blood samples were collected from the jugular vein from all the cows. Surgery was performed in cows with LDA. Blood samples from cows with LDA were collected 24 hours after surgery. The abomasum was repositioned followed by an omentopexy. Six of the 18 cows with LDA had clinical ketosis as detected with urine dipstick. The mean concentrations of insulin, BOH, glucose and AST in cows with LDA at admission time were increased compared with the healthy cows. But the mean concentration of ICa at admission time was slightly decreased compared with healthy cows. The mean BOH concentration was decreased 24 hours following surgery compared with values on admission time. However, the mean serum AST levels were increased both at admission time and 24 hours after surgery compared with healthy cows. The levels of blood gas parameters in cows with LDA were not significantly different in comparison with healthy cows, although hyperbasemia in six of 18 cows with LDA was determined. In conclusion, the results of this study indicated that serum insulin, glucose, AST and BOH levels were increased in dairy cows with LDA. Serum BOH and ICa levels were decreased 24 hours after surgery compared with values on admission time. All cows with LDA used in this study had subclini- cal/clinical ketosis. We could say that ketosis might be a risk factor for the displacement of the abomasum.
The changes in some biochemical and haematological parameters in three cows with post-parturient haemoglobinuria were described. The animals were 4, 6, and 7 years of age. These cows had calved in the autumn. Post-parturient haemoglobinuria in the cattle occurred at a post-partum of about 3 weeks. The cows received phosphorus supplementation and supportive treatment. The mean serum phosphorus level in the affected cows was significantly lower compared with healthy cows. In the meantime, the blood RBC, PCV, MCHC, and Hb values were also significantly lower compared with healthy cows. In conclusion, the deficiency of phosphorus could be responsible for the development of post-parturient haemoglobinuria in the cows.
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