Fatty Acid Composition of Blood Serum Lipoproteins from Normal and Ketotic Cows

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Abstract
Fatty analyses of [alpha]- and [beta]-lipoproteins of normal, subclinical, and clinical ketotic cows during the early part of lactation were performed. Sufficient data were obtained to reveal a large degree of individual animal variation. Nevertheless, significant differences between normal and ketotic cows regarding the [alpha]-lipo-proteins'' composition were detected. The [beta]-lipoproteins show distinct fatty acid compositional trends, but the amount of individual variation obviates statistical significance. The data were interpreted as indicating alternations in lipoprotein structure and supported the postulation that a breakdown in lipid and protein transport may be a primary event in bovine ketosis.