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Journal of Dairy Science Vol. 25 No. 10 851-860
© 1942 by American Dairy Science Association ®
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Studies on Ketosis in Dairy Cattle. II. Blood and Urinary Acetone Bodies of Dairy Cattle in Relation to Parturition, Lactation, Gestation, and Breed1

C. B. Knodt2, J. C. Shaw and G. C. White

Department of Dairy Science Industry, Storrs Agricultural Experiment Station, Storrs, Connecticut

ABSTRACT

A large percentage of the clinical cases of ketosis in dairy cattle occur during the first few weeks following parturition. This condition is associated with loss of appetite, a decrease in body weight, and a marked decline in milk production. Sjollema (10) early observed that ketosis frequently occurs during the first week to 10 days following parturition. Boddie (2) reported that ketosis usually occurs during the first six weeks following parturition and is frequently observed about two weeks after parturition. Duncan, Huffman, and Tobin (4) observed that the symptoms of ketosis were most marked two to six weeks following parturition in a herd of purebred Jersey cattle with a high incidence of ketosis.

Because of the large number of cases of ketosis observed shortly after parturition, emphasis was placed upon this particular period in the study of the normal level of the acetone bodies. Studies were also made of the effect of lactation, gestation, complete cessation of milking, and of breed upon the concentration of these substances in the blood and urine of dairy cows.

FOOTNOTES

1 This project is finance in part by a grant from the Chas. M. Cox. Co.

2 The experimental data in this paper are taken from a thesis presented by C. B. Knodt in partial fulfillment of the requirement for degree of Master of Science in Dairy Industry, University of Connecticut, Storrs Agricultural Experiment Station






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Copyright © 1942 by the American Dairy Science Association ®.