HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Leffel, E. C. Articles by Shaw, J. C. Search for Related Content PubMed Articles by Leffel, E. C. Articles by Shaw, J. C.

Studies on Ketosis in Dairy Cattle. XXI. Effect of Different Levels of Protein and Energy Intake¹

Maryland Agricultural Experiment Station, College Park

ABSTRACT

It was noted by Shaw (18) that primary or clinical ketosis occurs in cows on an adequate caloric intake, showing that it is not caused merely by fasting. However, since fasting ketosis has been produced in other species, it has often been suggested that bovine ketosis, as well as pregnancy toxemia in ewes, is caused by an inadequate caloric intake. Forbes (6), Shaw (21), Shaw and Leffel (20), Brierem et al. (4), and Robertson and Thin (12) have noted that the blood ketone bodies of lactating cows increased appreciably when the cows were maintained on an inadequate caloric intake. A fasting ketosis has also been produced in ewes in late pregnancy by Sampson and Boley (16) and Clark et al. (8). These and other aspects of bovine ketosis have been reviewed recently (19).

The classic ketogenic ration for rats is a low-protein, high-fat diet (2, 3, 5) which produces a fatty liver and a resultant ketonemia during fasting.

¹ Paper No. A6071 Contribution No. 2786 of the Maryland Agricultural Experiment Station.