Some results of the etiology of metabolic alkalosis and ketonemia in dairy cows
1993
Kadarik, K.
Department of Physiology Estonian University of Agriculture. In four years (1988-1991) on two farms the total of 376 Estonian Black and White Breed cows (EBW), and on one farm 178 Estonian Red Breed cows (ER) were investigated during the indoors period. Blood samples were drawn from the jugular vein into heparinized tubes and syringes after milking at 5.30-6.30 a.m. The blood acid-base state indicators were determined by the Astrup micromethod. The content of free amino acid, urea and amide in blood was measured by the use of amino-acid analyzer AAA-339. The content of electrolyte in blood and milk was measured with a flame-photometer. The content of chlorine was measured titremetrically. The ketone content of cows venous blood and milk was measured by the method of H. Steger and J. Voight. The content of blood glucose was determined by the method of o-toluidine. According to our investigation the high-yielding cows had mostly metabolic alkalosis and ketonemia: (Alkalosis was among 27,5% of the EBW cows and 19,6% of the ER cows. Ketonemia was observed among 46,2% of the EBW cows and 20,2% of the ER total of the cows investigated). In case of base excess the statistically significant correlations were observed between the content of blood plasma chlorine, ketone bodies and urea
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