JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 55 No. 3 339-344
© 1972 by American Dairy Science Association ®
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Frier, H. I.
Right arrow Articles by Eaton, H. D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Frier, H. I.
Right arrow Articles by Eaton, H. D.

Rates of Formation and Absorption of Cerebrospinal Fluid in the Very Young Calf1

H. I. Frier, A. M. Gallina2, J. E. Rousseau, Jr. and H. D. Eaton

Nutritional Sciences Department, Agricultural Experiment Station, Storrs, Connecticut 06268

ABSTRACT

Ventriculocisternal perfusion (VCP) was successfully performed on four of seven pairs of calves ranging in age from 3 to 10 weeks. One calf of each pair was perfused at its initially determined intraventricular pressure and the other at 200 mm greater than its initial pressure. Linear regressions of bulk flow, bulk absorption, and formation, in grams per minute, Y1, on the imposed VCP pressure in millimeters of synthetic cerebrospinal fluid (CSF), X1, were respectively, Y1 = .02 – .00183 X1 (±.07), Y1 = .14 + .00168 X1 (±.06) and Y1 = .16 – .00014 X1 (±.01). Passive diffusion of creatinine across the ependymal lining of the ventricles averaged .06 ±.03 g/min and the volume of distribution of inulin (VDIn) equaled 12.1 ± 3.6 g. In comparing these statistics to those previously reported for 20-week-old calves, no significant differences were observed in the responses of bulk flow and bulk absorption to increases in VCP pressure. On the other hand, the average rates of CSP bulk absorption, CSF formation, and VDIn were less for the younger animals of the present experiment.

FOOTNOTES

1 Scientific Contribution 483, Storrs Agricultural Experiment Station, University of Connecticut, Storrs. This research was supported in part by a Public Health Service Research Grant NB-02108 from the National Institute of Neurological Diseases and Stroke.

2 Present address: School of Veterinary Science and Medicine, Purdue University, Lafayette, Indiana 47907.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1972 by the American Dairy Science Association ®.