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The Effect of Continuous Intravenous Feeding of Various Substances upon the Secretion of Milk Fat^1,2,

Department of Dairy Industry, University of Connecticut and Storrs Agricultural Experiment Station, Storrs, Connecticut; and Department of Dairy Husbandry, Maryland Agricultural Experiment Station, College Park, Maryland

ABSTRACT

1. A technic was developed for the continuous intravenous feeding of ruminants.
   
2. The continuous intravenous injection of cows with a protein hydrolysate, glucose, oleic acid, and acetic acid failed to prevent the decrease in the lower fatty acids of milk fat caused by fasting. As much as 1984 g. of sodium acetate was administered in 22 hours and as much as 1985 g. of glucose was administered in 31 hours.
   
3. A summary of the work to date renders the theory of a blood carbohydrate origin of the lower fatty acids extremely unlikely.
   
4. The data obtained from the continuous injection of butyric acid are inconclusive.
   

¹ Scientific Journal Article no. A151, Contribution no. 2044 of the Maryland Agricultural Experiment Station (Department of Dairy Husbandry).

² This paper is a part of a thesis to be presented by A. I. Mann to the Graduate School of Cornell University in partial fulfillment of the requirements for the degree of Doctor of Philosophy.